Miscellaneous advice on using various torpedoes and PT rockets against marine targets in Aces High
Sea is vast. Ships are small. You can not expect to hit a ship by
simply throwing your weapons in the general direction of the enemy.
Anything but about one vector will give you a miss. Below is advice on
finding that vector.
Written by: zxs a.k.a. -oklok
Aces High torpedo sight
Aiming PT's torpedoes
Aiming PT's rockets
Aces High torpedo sight
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Aiming PT's torpedoes:
The method of "constant bearing":
Make your PT's speed equal to that of a torpedo (39 mph; engine RPM =
23.5 unless there is wind; usually the wind is disabled in the online
arena, but check if it is, because the boat will float with the wind
like a balloon would). Allow a few seconds for your speed to
stabilise; every maneuver, however slight, drains some speed too,
and the boat will rock side to side for a few seconds after the turn,
so you will have to wait for some short time after every maneuver
before you continue aiming; further on, if there is wind, you have to
adjust the RPM after any and every course adjustment.
Find the approach course with which the bearing to your selected target
is not changing, that is, find the collision course for the
torpedo. Launch your torpedoes when within range (see advice on range
finding). That's it, basically.
Details (PT's only):
With long distance aiming, put your mouse cursor or aim your guns at
the target and check if it drifts across the screen in any direction.
Turn into the direction of drift. Allow 5 seconds for your boat to
stabilise. Check again. Continue until the drifting stops. With
practice, you can find the right course in about 5 such turns or less.
At the medium range, as the distance is closing, you can watch the
target grow at both ends, pixel by pixel, in the opposite directions,
meaning your boat (or your torpedo) is going to collide with it; drop
your torpedo, and it will.
The mouse cursor is a good aiming device but you may want to aim from
the gunner position to be able to look around sometimes without losing
Aiming PT torpedoes at particular types of ships:
It is a big target so you can get a good torpedo solution from far
away. It is so huge you can even aim a particular point of its hull (or
aim its superstructure) from 5000 yards away, or get a torpedo solution
very quickly when the range is short.
It is a bit harder to hit, yet its distinctive funnels become visible
from far away. The funnels are sloping backwards so you can always tell
if the target is drifting by watching the pixels at the funnels' edges.
It is, obviously, the most difficult target to hit, so you may have to
come within 3000 yards, when its sloping mast becomes visible with the
maximum zoom-in. Watch the pixels run up or down the mast to find out
if it is drifting to the bow or to the stern, respectively.
Turn into the direction of drift until the target is stable enough.
Be careful not to come within about 1600 yards of your target, or some
other ship in the fleet, as you will be shot at. After the DD's mast
has become visible (3000 yards), you have no more than 1 minute left to
aim, launch your torpedoes and turn away, or even less than 1 minute
(sometimes considerably), depending on the approach course.
In some terrains, DD is the fleet's main ship, so you absolutely have
to be able to hit it for sure. Once you have acquired that skill,
however, hitting a CV or a cruiser is a piece of cake.
Below is a detailed description of some calculation-based techniques
that can help you bring your bomber/formation to the desired drop point
during the attack (you have to be at both the right
course/speed/altitude and the right distance from your target when you
come there; it may often be not easy, especially if you are flying a
A much easier way is attacking by visual reference (see Small CV 36
degrees view and Small CV 36 degrees chart as an example),
but you have to prepare that reference first by making those
calculation-based practice attacks offline utilising the (rather
complicated) techniques described below; you take snapshots during
those attacks and inspect them closely. This preparation is more than
worth the effort, though: it makes your attacks a lot easier, as you do
not need to calculate the target's heading once you have visual
reference. You do not need to look at the compass at all any more. But
first, you'd better learn to do it "the hard way" to be able to attack
the target you have never seen before.
First of all, you have to determine the target's course with as good an
accuracy as the AH round compass permits (do not use the flat repeater
compass as it is misleading).
Come within the visibility range of the target and find out its exact
course in either of the following two ways:
1. Align your plane's heading with the target's heading flying towards
or away from it (view the ship's wakes if you are within 8000 yards
from them: they should be pointing directly at you). Switch the
autopilot-level on. Look at the compass. Your heading is the same or
180 degrees opposite of the target's heading.
2. Fly across the target's course. The ship's hull (or wake)
should be pointed directly at you while the ship is shifting through
the screen's center if you manage to bring your course to 90 degrees
angle-on-bow of the target's course (also, you can put the mouse cursor
at the screen's center for additional reference and use the zoom-in for
increased visibility and accuracy). Switch the autopilot-level on. Look
at the compass. You are on the attack course. To get the target's
course, add (or subtract) 90 degrees to (or from) your heading.
note#1: If you are quite familiar with the particular fleet's formation
(through offline preparation), you can sometimes determine its course
with sufficient accuracy (for immediate attack) by observing it from
the beam, i.e. from 90 degrees off its starboard or portside.
It is even possible sometimes to predict which course it is turning into by watching the periferal ships' evolutions.
note#2: Determining the target's course is easier, in fact, if you are
low. Besides, flying "below the radar" reduces the chance of alerting
note#3: You do not need to take those direction figures (like "90
degrees"), literally: you could be better off when thinking of
directions in terms of the "recommended code" (see picture below)
because that is how the directions are represented in the round compass
(e.g. 90 degrees = 3 numbered sectors of the round compass >> 1
numbered sector of the round compass = 30 degrees = 5 round compass
marks >> 1 round compass mark = 6 degrees). Furthermore, if you
choose to advise you squadmates on the target's heading, using the
recommended code can spare you the necessity of calculating the true
azimuth in digits with your mates converting them back into the round
compass representation. Less figures - less errors.
I suggest everybody only uses the round compass (the one with the
red-pointed arrow) to avoid confusion as the "tape" flat compass
repeater has a different grading (a mark is worth 5.5 degrees vs. 6
degrees in the round compass) and is often altogether illegible. Be
wary, however, that the round compass is not perfect either, as the
actual axis of the compass arrow is offset from the center of the dial
in some planes (not all), thus producing an error of as much as about 3
degrees when your heading is N-W or S-E; it does not matter much if you
are attacking a CV, but it may be enough to give you a miss by half a
hull's length when attacking a destroyer in a TBM from the long range.
In such cases, the flat repeater compass can be handy to make up for
the error, as it does have clearly visible marks for cardinal
When the target's course and your relative position to it are known,
decide upon which board of the target you are going to attack, and put
the mouse cursor at the respective spot (using the picture below
or cockpit art: see "some tricks" below).
Now you are (almost) ready to start your attack run in one of the ways described below.
Well, there still is one issue you must not fail to consider whichever way of attack you choose: it is the altitude of drop.
It takes a torpedo some time to reach water after you drop it. In the
meantime, it travels at your plane's speed, not at its own speed (39 or
47 mph). Torpedo reaches water almost immediately (1.5 seconds) after
drop when your altitude is very low (50 feet), whereas this span is
about 3 seconds when dropping from the altitude of 200 feet (minimum
alt for wingies in a formation). Further on, it is 4 seconds @300feet,
5 seconds @400feet and as long as 7.5 seconds @900feet (TBM torpedoes'
max practical safe drop).
Why is it important? Because the CV's arc length is about 6 degrees
from ~2000 yards away (minimum safe drop distance), with that number
for the destroyer being twice as small, and the bearing to the target
is changing as fast as 1 degree/second.
So, if you are too high or late on the trigger, or do not compensate
for that time span by dropping before the desired bearing is achieved,
your torpedo may pass before the target's bow, especially if your
target is a destroyer.
Take that into consideration while aiming.
Now start making your approach.
Here are four methods of doing it:
1. "Aim in advance":
This method can be used with any type of torpedo bomber/torpedo.
This method can be used when you know the target's course in advance.
If you can get ahead of the target off its side, do so, then go at the
attack course towards your target while still far away from it(attack
course=target's course + or - 90 degrees). Wait till the cursor aligns
with the target: you have now found the correct angle of attack (36 or
41 degrees, depending on your plane>>type of your torpedoes), but
the range is still too far. Now turn into the target and steer towards
a point about 5 or 10 degrees of arc off its bow; in other words, head
almost directly at the target but for 5 or 10 degrees towards the
direction it is going (this way, the cursor is somewhere near the
target's tail when in the maximum pilot's zoom-in). With your speed
around 200 mph, you will notice the bearing to your target stays the
same: in a way, it is a "collision course"; this way, you are closing
the range to the target while retaining the angle of attack (36 or 41
degrees). As you are approaching the target, bring your flight
parameters within the drop limits: speed (TAS)<~190mph,
preferably<180mph; alt<~400ft, recommended=200ft or 130 ft, when
in a formation, or ~50 ft when in a single bomber, and check what your
wingies are doing. Look around for enemy's fighters near you or PT's in
your flight path, just in case. Prepare to drop.
When in a Ju-88/Ki-67/B5N (fast/short range torpedoes), you are within
the torpedo range as soon as you see the first tracers from the nearest
destroyer (firing at you). When in a TBM (slow/long range torpedo), you
acquire the range a lot earlier (see "Range finding" and "some figures"
parts below). When within range, turn towards the target's bow (firmly
but smoothly, when in a formation) until the cursor aligns with the
tail part of the target's hull or just behind the superstructure (no
After the drop, turn away as tightly as you can (the shortest way out
of acks is towards the target's bow). You can not keep your sluggish
wingies from flying quite close to the escorts, but changing your
altitude a bit above and below 200 feet will make them change their
altitude as well while staying fast. With luck, they can escape with
little or no damage. Make sure you do not lose them altogether in the
As soon as the immediate danger from automatic acks is over, and if
situation permits, you can go to a gunner's position or outside view to
watch your fish go.
"Aim in advance" is my preferred choice when attacking by visual
reference, too, if I have done the offline preparation for attacking
the particular type of fleet.
E.g., if I am flying a Ju-88, Ki-67 or B5N, and my target is the small
CV fleet (the most common in AH: 1 CV, 1 CA, 4 DD's), I maneuver quite
far from the target until I reach the relative position when the fleet
looks as in leftmost picture below or middle picture below (the
closest forward destroyer aligns in view with the furthest rear one),
then turn into the target fleet etc.etc., as described above. When in a
TBM, the fleet should look as in rightmost picture below at the desired angle.
There is a big advantage in this method as you approach your target
along the shortest route possible, and attack immediately, leaving your
enemy very little time to react. 15 seconds after those in the ships
see your icon (3.6 Kyards away) your torpedoes are in the water. Unless
your enemy knows enough to make a hasty use of that ships control panel
to turn the fleet, count till 100, and its all over.
2. "Right angles approach" for fast/short-range torpedoes:
This method was primarily designed for practice (and preparation)
attacks with torpedo bombers carrying fast/short-range torpedoes
(Ju-88; Ki-67; B5N), especially for those 2 types that fly in
This method can be used when you are not attacking by visual reference,
and do not know the target's course beforehand. That is, you use it
when you can not "aim in advance" or "aim by visual reference" for some
reason, like when you have to approach your target from the stern and
attack it ASAP, or when you have to attack an unfamiliar or decimated
fleet or a single ship (that can not be "visually referenced").
See picture above for variants of approach. All of them are
especially intended for use with formations of bombers, when you can
not turn tightly. As you may notice, those patterns have something in
common with the landing pattern of an airport. Pay attention to the
30-seconds "crosswind" section: you cross the target's course behind
its stern or well ahead of its bow (you can determine your target's
course and your attack course that way). After you have crossed the
target's course line, keep moving on for 30 seconds at ~200mph (you
will cover about 3000 yards) then turn along the target's course,
keeping your wingies with you as you turn. This will give you
sufficient space to turn the whole formation into the attack course,
later on, without getting too close to the target's acks. Inspect the
screenshots of the artificial horizon and VSI in Approach
patterns picture above. If you follow the pattern "by the book" (turn as
indicated, and at the correct spots, as well as keep the recommended
speed), it will bring you into the attack course after the last turn,
with a few seconds to make the last hdg/alt/speed/aiming check before
The "Right angles" pattern was designed for turning at the 30-degree
bank without using the rudder for the following reasons: firstly, you
can be sure your wingies stay with you if you turn that way; secondly,
you have some edge to press your turn a bit tighter with your wingies
still staying with you, to correct for some minor mistakes in your
dead-reckoning; lastly, such turn is easy to perform with only slight
control inputs (some practice is recommended, though, so that you can
do it automatically without looking at the gauges). Furthermore, if the
co-ordinated attack tactics is to be developed (some day, sooner or
later), the participants can advise each other on their positions
relative to the target using the exact and clear pattern terms (just
like the airport controller does when managing the air traffic). So,
rather than describing his current position and probably confusing his
team-mates, a player can use some clear definitions like "I'm (in)..."
+ "...forward/rear crosswind to port/starboard",
"...port/starboard/center upwind/downwind", "...port/starboard base",
"...direct approach into port/starboard", "...attack run", "evading",
"going around" etc. See picture below. I see it (or some
similar code) as absolutely essential to achieve the perfect timing of
a co-ordinated attack.
Finding the correct spot to start turning into the attack course (turn
A as in Approach patterns picture is the most important issue during
your approach. You find that spot by observing the relative bearing to
your selected target (A relative bearing to the target is the angle
between your own course and the visual bearing to the target).
If the "30-seconds" "crosswind" section of the pattern has been done
properly, I use the following "rule of the thumb" (see belowfor illustration):
When coming to the target from the stern (turn A from upwind: see
above), start a smooth turn into the attack course
(towards the target) as soon as you see the target at the relative
bearing of 90+10=100 degrees; in other words, you look at the target
using the right or left view, respectively, and you start the turn A
shortly after you have ovetaken the target, i.e. shortly after the
target has passed through the screen center.
When coming to the target from the bow (turn A from downwind:
start a smooth turn into the attack course (towards the target) as soon
as you see the target at the relative bearing of 90-40=50 degrees; in
other words, you look at the target using the right or left view,
respectively, and you start the turn A as soon as the target is between
the 36 degrees mark for the respective board (where you have put the
cursor prior to attack) and the edge of the screen.
Be advised that the screen covers an arc of 90 degrees (45 from the
center to either side) without zoom, and 30 degrees (15 from the center
to either side) in the maximum pilot's zoom-in view (make yourself
familiar with the bearings scale in below to get the "feel"
of how wide your field of view is at various zoom levels); so, 10
degrees off-center will be about 2/3 of the screen in the maximum
The method #2 has a big downside to it, and that is tactical: you have
to spend quite a lot of time near your target (up to 3 or 4 minutes)
within a relatively close range to it (~4000 yards or so). That is why
I recommend you use it primarily for practice attacks offline (to
practice flying a formation of bombers at tree-top level and getting
visual ranges to the target, as well as to prepare those "visual
reference" attacks). Online, it is only good for attacking
destroyers/cruisers fleets or single ships in unfamiliar terrains.
If the CV is present, you are very likely to stir a wasps' nest, if you
haven't already; besides, you allow the enemy enough time to comprehend
the danger and prepare to turn the fleet. Further on, if the enemy
fleet has started making some sharp evasive turns, its speed increases
(up to a maximum of 41 mph immediately after a 180-degree turn, then
gradually decreasing back to its normal 34 mph during some 5-7
minutes); the attacker will have to bring respective adjustments into
his aiming. Then, the range of 4000 yards (or even 6000 yards, for that
matter) is not safe if the fleet has a decent shooter at the controls
of that automatic-proximity fuse 5 inch machine-gun; the presence of
enemy's fighters and lack of escort can make this method altogether
Generally, a well-defended alerted CV fleet makes quite a difficult
target for a single bomber, or, for that matter, for a number of
uncoordinated single bombers. What makes it even more difficult is the
fact that, with the current pretty short target recovery time, you have
to deliver 3 torpedo hits on the fleet's main ship within 15 minutes or
so, in order to kill it.
Tactics of a co-ordinated covered torpedo attack to overcome even the
strongest defence still has to be developed for AH use. For now, most
you normally achieve is disrupt the enemy's attack and frighten the CV
away from your own airfield, or make it turn in place.
Fortunately, the tactics of a stealth attack and delivering a decisive
3-torpedo blow to a "visually referenced" target before you alert your
enemy, combined with the "aim in advance" tactics, brings much better
result, if you can find that fleet early enough.
3. "Right angles" approach for long range torpedoes:
This method was designed for use with torpedo bombers carrying
slow/long range torpedoes (AH currently has only one, namely, TBM).
It is a more "liberal" variation of the "Right angles" approach
described in item 2 above. It is "more liberal" in the sense that a)
the TBM is not a "formation" bomber (currently), so you can turn as
tightly as you choose, if you need to, without fear of wasting your
wingies, and b) the TBM carries a long-range torpedo, so you may never
come into the automatic acks firing range (1600 yards), or not even
into the icon visibility range (3600 yards for the low-flying aircraft)
from your target.
Follow the pattern and the procedure
described in section "2" above, except that you can extend the
"crosswind" section of the pattern up to 40 seconds or a bit more
(~4000 yards) to take advantage of TBM's torpedoes' longer range, with
your dropping angle being 41 degrees instead of 36. Extending the
"crosswind" section will take you extra 20 seconds (10 there and 10
back) or more but, in return, it will also make you safer from fleet's
127mm human acks and may prevent enemy's gunners from seeing your icon
Alternatively, you can modify the "Right angles" pattern in the following way:
As the TBM is not a formation bomber, you can make your turns much tighter than what is described above, so:
When in the "upwind" section (i.e. coming from the stern), start a tight turn into the attack course when the target
is at the relative bearing of 90+41-10=~120 degrees of the relative
board; in other words, you go at the course parallel to the target's
course, look at the target (right of left view), and turn 90 degrees
into the target (into the attack course) as soon as the target is at
the relative bearing of 10 degrees of arc closer to the screen center
than the 41* aiming reticle (its about twice the distance from the 41*
reticle to the screen edge).
When in the "downwind" section (i.e. coming from the bow), start a tight turn into the attack course when the target
is at the relative bearing of 90-41=~50 degrees of the relative board;
in other words, you go at the course opposite to the target's course,
look at the target (right of left view), and turn 90 degrees into the
target (into the attack course) as soon as the target is aligned with
the 41* aiming reticle.
The rest is as per section "2" above.
One more thing to take advantage of in a TBM: as you do not have
wingies, you can make your drop from a very low altitude (50 feet or
even less). Remember: the lower you are, the smaller adjustment you
have to make for the time it takes the torpedo to reach water; hence,
the better accuracy you get.
Some advantages of the method: If you are attacking alone in a TBM, and
there are no enemy fighters nearby, the long-range very-low-altitude
attack gives you a good chance of hitting and escaping as you have both
good accuracy and stealth: the fleet's gunners never see your icon when
you are low and far away; they may never realise a drop has been made.
4. The "Dagger" attack in a TBM.
It is designed for TBM's only (as the title implies).
This method is rather an exercise in prowess than a practical tactic
(at least when you are the only attacker), as the long range extremely
low-altitude drop described in item 3 above gives you about 90%
accuracy and is a lot safer, because the fleet gunners may never see
your icon at all.
This method is intended to take advantage of the TBM's torpedoes'
ability to be dropped from the altitude of <1000 feet and arm
successfully with water impact speed of <250 mph; these generous
limits let you toss that fish so it reaches water really close to the
With this method of attack, it is crucial that you follow the pattern
precisely as described below (check it against the yellow pattern line
in Approach patterns): 30-seconds "crosswind" section of the
pattern; turn into the "upwind or "downwind" section (turn B) at 30
degrees of banking without using the rudder; then, if you are
approaching from the stern (from the "upwind"), turn into the attack
course (turn A) when the relative visual bearing to the target is about
92 degrees, i.e. you keep your heading parallel to the target's, look
at the target (look left or right), and start the turn A when the
target has just passed through the center of the screen; or, if you are
approaching from the bow (from the "downwind"), turn into the attack
course (turn A) when the relative visual bearing to the target is about
51 degree, i.e. you keep your heading 180 degrees opposite to the
target's, look at the target (left or right), and start the turn A when
you see the target between the cursor (that you have previously put at
the aiming mark of ~33 degrees of the respective board for the "dagger"
attack) and the edge of the screen; the altitude of drop is 900 feet
and the speed of drop is 200 mph (in level flight). When in the attack
run, drop as soon as the TBM "dagger" reticle (=your cursor on the
screen) aligns with the midships of the target. You should see your
target has just started firing the automatic acks at you at that
moment. As the torpedo covers a significant portion of the distance to
the target before reaching water (i.e. flying at 200 mph), it is
essential that the drop is made from the particular distance (in
contrast with other methods of attack), that is why following the
pattern is essential. Offline practice is recommended so you are about
as perfect as can be in following the pattern; it can also help you
learn to "see" and "feel" the range to the target so you can exercise
that attack without using the pattern (be warned: it may take hours to
hone that method to perfection).
The advantages of this method (from offline experience) are: the
escorts' automatic acks' accuracy does not seem to be good enough to
achieve any hits on you during the attack (the issue of "bad luck"
discarded here). After the drop, you have a wider altitude margin for
evasion, e.g. you can make a half-split-S to change your heading
sharply. The other advantage is that your torpedo flies towards the
target for 7.5 seconds from that altitude, covering >700 yards in
the meantime. It takes the torpedo less than a minute (about 52-54
seconds, to be precise) to cover the remaining 1000 yards, allowing the
enemy even less time to turn the fleet away than if you were attacking
with the fast torpedoes dropped low at the range of about 1600 yards.
Anticipated online tactical limitations: unless you make a zoom climb
to 900 feet of altitude from "below the radar" altitude just prior to
attack (after the turn B), it is very likely that enemy's fleet gunners
have traced your radar dot and are getting ready to shoot at you as you
approach. Probably it is easy to aim a 127mm AA proximity-fuse cannon
at a single target ~2000 yards away moving at the altitude of 900 feet
and at 200 mph not directly at you. Or, may be not. This leaves to be
Generally, as for now, I suppose this method can be utilised for a
co-ordinated attack to restrict the target's maneuverability and
distract the fleet gunners' attention from the low altitude attackers.
When in a PT:
With the maximum pilot's zoom-in, the CV's visual representation turns
from the low-resolution to the high-resolution model at the range of
4800 yards, and the CA and DD turn to the hi-resolution model at the
range of 3000 yards. This fact can
especially be used to your advantage when aiming the rockets (see
"Aiming PT's rockets" below)
With the maximum pilot's zoom-in, CV's overhanging deck becomes visible
from time to time starting at the range of ~6100 yards. If you are in a
PT and your attack course is 90 degrees angle-on-bow of the target
(i.e. your attack course is perpendicular to the target's course),
seeing the overhanging deck of a CV means you are almost within the PT
torpedoes' range: you may drop in a few seconds, if situation is
urgent; if your aim is good, expect a hit in a bit less than about 4
minutes (PT torpedoes' maximum travel time).
When in a bomber with the fast torpedoes (Ju-88, Ki-67, B5N):
as soon as you see the first tracers from the closest escort (firing at
you), you are within your torpedoes' range of the fleet's center.
(See also the "tricks" part of this text for advice on "extending" the torpedo range)
When in a TBM (slow torpedoes) bomber, you can attack from the longer
range. This gives you some time to observe your target and estimate the
The ships' wakes become visible from about 8000 yards away.
Aiming PT's rockets:
With the current PT rocket bombardier view being a complete blank it is
no wonder most players simply toss all of the rockets in the general
direction of the enemy or not use them at all. This reduces the
attacking potential of a boat against the fleet by about 1/6th, as the
punching power of a salvo of rockets (considering their dispersion) is
about equal to one torpedo or 3/5th of the 40mm gun ammo capacity.
Following are the ways of putting the PT rockets into good use.
Inspect the lilac-coloured marks in the Torpedoes map. The
left-hand scale is for a stationary boat, the scales on the right and
in the center are for a boat travelling at the maximum speed. I found
out that the rockets' range is greatly affected by the fact if the boat
is stationary or moving. Against expectations and logic, the range of
the rockets launched from a fast moving boat is shorter (by about
2/5th) than that of the rockets fired from a static position. Hence, 2
The scale on the left (for a static boat) can best be used for aiming
ground objects, or for setting an ambush for enemy's fleet or PT's,
when the target is heading your way and you are not moving (which also
helps you to get rid of that ever-so-visible wake).
In most cases, however, you will be moving full speed, so you will use
the scales on the right and in the center. Make sure you always use the
correct zooming for the particular scale: zoom default (NOT the max-in)
for the scales on the right and left, and no zoom (normal view) for the
scale in the center.
The scale on the right can be used with any kind of target but it was
particularly designed for attacking secondary ships and PT's.
As the only occasion during an attack on a ship when you know the range
for sure is when the ship has just passed through the high-low
resolution transition threshold (see Ranges for details), I
suggest you use the following method of aiming:
1. If your target is a CA or DD, use the right-hand scale (zoom
default) and prepare your aim (at 3000 yards) in advance. To do that,
first put the mouse cursor at the 3000defaultzoom-4800nozoom line at
the zero bearing; alternatively (and more
simply), with zoom off, bring out the clipboard (esc key) and put the
cursor at the spot shown in picture right. . Make sure you do
not move the cursor any more after that. Hide the clipboard. To Aim (at
3000 yards), turn zoom on and make it default (check "setup/keyboard
mapping" for the respective keys), then elevate your rockets till the
cursor touches the horizon from below. Your aiming is ready. Make sure
you do not change your aim elevation any more until your rockets are
launched; you can move the cursor now, but I suggest you keep it in
place, just in case anything goes wrong and you have to aim
again. Now steer towards your target somewhat ahead of it (by
about a hull's visible length or less from the midships to allow for
the rockets' travel time of 9 seconds and the minimum duration of the
full salvo of 4 seconds; make the duration minimum by typing
".delay=0.05"). As soon as you are on the attack course, open the bay
doors, hit the free-view key (check "setup/keyboard mapping" in the
AcesHigh clipboard for the particular key), bring the horizon to the
center of the screen by adjusting your view uo and down (do not move
your joystick up or down!), and increase the zoom to the maximum-in.
Now observe your target closely and launch the whole salvo (or part of
it) as soon as the target changes into the high-res model. The moment
itself is very noticeable as you will see the tail crane and the
forward turret #2 pop up in the cruiser or the mast become visible in
the destroyer as well as some minor parts.
The rocket salvo will cover about the same area near the target,
whether it is 2 or 5 thousand yards away, so, with good aiming, long
range seems to be as good as short one, except for the longer time it
takes the rockets to get there. However, if you think 3000 yards is too
far, or missed the right moment and do not want to turn and go around,
it is possible to have a good aiming at a smaller range, like, 2000
yards, the only limitation being that you can only aim the closest
ships in the fleet's formation this way or else you will come into the
target's smaller acks firing range (~1600 yards=1 mile), and they are
With all the 3 engines intact and with no wind, you boat covers 1000
yards in 43 seconds (see "some figures" below). Make your aiming as
required for the range of 2000 yards, keep going, and count those
If you are attacking from the side, when the target's own movement does
not affect the range very much, launch in 43 seconds or a bit less
after the target has turned into the hi-res.
If it is a straight head-on attack, and the target is moving at its
standard speed of 34 mph, the range will decrease down to 2000 yards in
about 25 seconds (relative speed=47mph+34mph=81mph=39.6yds/sec;
1000/39.6=25 seconds). In the head-on attack, you need to turn 180
degrees immediately after the launch to avoid running headlong into
that 1600 yards area.
If you are in the straight tailchase for the target, the range will be
decreasing by 47mph-34mph=13 mph=6.3yards/sec so it will take you about
1000/6.3=159 seconds to close the range down to 2000 yards (with you
counting them seconds aloud while gazing at the display with the
stopwatch ticking at your ear and scaring the hell out of your
significant ones and pets, and the mental ambulance tearing through the
dark streets, siren roaring, to bring some IMMEDIATE help to yet
another gamer). Come on, will you really bother? Launch at 3000 and
2. The scale in the center is designed particularly for aiming the CV.
It is to be used with no zoom (normal view). Prepare your aim in
advance similarly to the procedure described in "1" above, except for
the fact that you have to aim for different ranges depending on whether
the target CV is heading towards you, away from you or across your
If you are attacking from the side, the range will stay essentially the
same 4800 yards (hi-low resolution threshold), so use the 4.8 mark. The
aiming point is, again, about a hull's length from the midships towards
If it is a head-on, use the 4.5 mark; ; if it is a tailchase, use the
5.1 mark (it takes rockets some 18 seconds to reach the target from
4800 yards away; meanwhile, the target will move away 300 yards from
its initial 4.8 kiloyards position). In both the head-on and the
tailchase attack, you aim directly at the ship's hull or very close to
You can determine the exact spot by counting 18 seconds and checking how much the target has drifted across the screen.
In a tailchase, you have the option of putting the launch off for as
long as you wish, e.g. to make some trial single shots before launching
a salvo, as you can keep the target at the same distance by going the
same speed with it.
In any case, launch your rockets as soon as the CV turns into the hi-res model.
3. If your target is a hostile boat, you will see the range indicator
which makes aiming pretty straightforward: just launch your salvo at
the range you see, spreading them a bit into your target's heading
(towards you, away from you, or across).
If you want to be able to kill such a small target with less than the
full 16-rocket salvo (sniper's ambition, eh?: 2400 bullets=2400 pilot
kills, potentially:-)), bring out a calculator in your head: note the
range ("R" in kiloyards) and aim at R if the target is moving across
your course, or R+(R/15) when in a tailchase, or R-(R/15) when in a
head-on. R/15 is the approximate ratio between the speeds of your
target and your rockets. For example, R/15 for the range of 3 kiloyards
is 200 yards, so you will want to aim at 2800 to hit an enemy PT going
full speed towards you, and launch when the target is 3 kiloyards away;
alternatively, you can aim at the range of 3 kiloyards and launch when
the target is 3.2 kiloyards away. With good aiming, half of the salvo
(8 rockets) has a good chance of doing the job.
It is easier to kill boats with the 40mm or small calibre guns, though,
if you are a better crackshot than your opponent. 40mm is the all-best
option: turn away from the enemy while still out of the 1600 yards'
range of his smaller guns and use that deadly 40mm on him. He can not
aim his own 40mm straight ahead, so the running PT has the advantage
If your last sortie was in the "gun ship or field" you retain the x9
zoom for the pilot's view in the subsequent sortie (until you switch to
a gunner's view). You can exploit this bug for a PT sortie. With the x9
zoom, you can easily achieve the perfect torpedo solution from any
distance. The downside of it is that if you want to keep the x9 zoom to
enjoy the visibility you do not have the regular x3 pilot's zoom to aid
range finding, and the x9 zoom is very misleading as to the range.
Until you learn to estimate the approximate range with no zoom or with
the x9 zoom, you may have to switch to the gunner's view and back after
you have aimed in order to get the range to the target.
If you are attacking with PT torpedoes from the position off to a side
and ahead of the target, seeing a DD and/or a CA turn into the hi-res
model when viewed with the maximum pilot's zoom-in (see Ranges
and the part on Range finding above) means you are well within PT
torpedoes' range. If your aim is good, it is time you have launched you
torpedoes, unless you want to be 200% sure of a hit. Moreover, you are
soon going to enter the firing range of the closest DD's smaller acks
(estimated at ~1600 yards): see the speed data in the "some figures"
section below. If that happens, launch immediately, turn away from the
firing ship and zigzag. With luck, you can escape. Fortunately, fleets
will not use any long-range acks (that is, larger than 20mm) against
PT's. However, if there is a decent (or any, in fact) human 127mm (or
even 40mm) gunner in that fleet and he notices you at such a small
range, you are only going to live as long as it takes to make a couple
of shots at best. If the 127mm acks are unmanned, though, or if you
have not been noticed (yet:-)), you can as well use your own 40mm gun,
which has quite an impressive range of about 6000 yards (!). Luckily,
the 40mm tracers can not be seen by other players online. About 150
rounds are usually enough to kill a secondary ship.
You can estimate the target's course accurately when in a PT by going
34.5mph (RPM=20.1 without wind) and turning parallel to the target's
course. Observe the target and turn against the direction of the
target's drift until it stops. Unfortunately, the PT's flat compass is
bad (to put it mildly), so you may not be able to advise your mates on
the exact figure of the target's heading, but you can utilise your
knowledge about the target's course in your own attack: put the mouse
cursor to the 41 degree mark, look 90 degrees to the target (right or
left) and go full steam ahead or reverse without any turning
until the cursor aligns with the selected target (that would mean that
you are in the vertex of the right-angle torpedo triangle, and your
target is in its other vertex). As soon as this happens, make sure you
are in the forward gear and turn into the target until the cursor
aligns with it in the forward view. If you are within the torpedo
range, toss your fish. If the target is out of range, go straight at 39
mph until the range is achieved or further, then launch.
With the small CV fleet (the most common in the game: 1 CV, 4 DD's, 1
CA) you can do without the accurate "constant bearing" aiming.
Alternatively, you can maneuver until the target looks as in here, then turn into the target CV until it aligns with the 41
degree mark for the respective board (right or left) (again, you should
have moved the mouse cursor to the desired spot beforehand). If the
range is good, drop 3 torpedoes for the CV then turn towards the
target's bow until the CA is almost out of the screen (in other words,
the aiming angle for the point somewhere in the forward part of the
CA's hull is 45 degrees, that is, the edge of the screen) and launch
the last torpedo. This method gives you reasonably good accuracy.
Besides, this method may be your only option if one of your engines has
been damaged, as it takes a lot more trouble to stabilise the speed and
heading of a PT with one engine dead. If you have two dead engines, you
can not maintain 39 mph at all.
If you are not quite sure of your aim, spread you torpedoes slightly
against the target's hull. Three out of four torpedoes may well hit.
If it is only secondary ships that you are aiming (any secondary ship
takes one torpedo to be killed), go into the position aside of the
fleet and somewhat forward of it at a medium range, aim the forwardmost
ship with the "constant bearing" method (be as accurate as you can),
launch the first torpedo then chop throttle so you almost stop or you
may even hit the reverse gear keeping the throttle at full and go
backwards for some time (without any turning) to move further away from
the fleet's acks, just in case, and wait till the next target in the
fleet aligns with the cursor. Keep in mind that the torpedo always goes
in the vector your PT is going, so make sure you are not in the reverse
movement when you launch, as your torpedo will then go backwards!
Launch your torpedoes one by one. Be sure not to switch to any other
view though, or move the mouse cursor, until all the torpedoes are
expended, lest you lose your aim. This method has an additional
advantage: when your boat is stationary, it has no wake, so you are
very hard to see from the air at the short distance.
If the fleet is big, you may want to find such a position that two or
three ships in the fleet overlap, before you start aiming. This way,
you get one firing solution for two or three targets.
Be advised that it takes 3 torpedoes to kill the fleet's primary ship
(be it a CV, CA or even a DD), and 1 torpedo (or ~150 rounds shot from
the 40mm gun, or about 8 rocket hits) for any secondary ship (including
a CV). So, the PT's ammo is enough to kill 3 ships (1 primary) with
certainty. With some luck, you can damage or even kill one more
secondary ship with your rockets and the rest of the 40mm ammo (240
rounds total): see the part on "Aiming PT rockets" for details and
"PTs_firepower" (below) as an illustration.
There is no need for you to switch into the "Torpedoes" map every time
you aim. Instead, adjust your pilot's seat so the aiming marks (36 or
41 or 0 degree, or whichever) are against some noticeable spots in the
cockpit art, and memorise those spots. It does not necessarily have to
be the forward view. Any other view (down, forward down, forward up, up
etc.) may contain some good reference marks you can put your mouse
cursor at prior to attack. E.g. the PT's pilot's dashboard view
(forward down) can be adjusted so it provides some good 41 and 0 degree
marks for aiming; with the aiming device properly calibrated, the
4.8K-3K rocket-aiming point is against the clipboard spot shown in
Aiming by clipboard, when the clipboard is viewed with zoom off;
the gunner's reticle's center is exactly 0 degrees (center of screen);
and so on.
In planes, it is worthwhile to have those reference points in as many
views as possible as during dusk hours some of the views can be too
dark to see. Use the "move up/down/left/right" and "save the head
position" keys to adjust your pilot's seat in the respective view.
Additionally, you can improve your out-of-cockpit visibility (sometimes
significantly) by doing so, which holds true for any plane/vehicle you
use (note: make your PzIV/Ostwind driver's head stick out of the hatch
permanently by using this technique). The "move up/down/left/right"
keys can often be used in-flight to clear some blind spots in the
cockpit, e.g. during banking while approaching the target.
A General advice is to learn to use your windows control panel/video
card properties to raise the D3D gamma (brightness) so you do not lose
your vision during dusk or night hours. With many video cards
(including my current RIVA TNT2), there is a good reason you do it as
many D3D applications are normally too dark (much darker than the
If you are flying a formation of Ju-88 or Ki-67, the default formation
is the Vee, so your torpedoes will go in the Vee as well. However, this
can be changed in several ways:
1. The wingie drones will not go below some 200 feet of altitude, so if
your leading plane's altitude at the drop point is less than about 100
feet, the torpedoes will go in the inverted Vee, as your torpedo will
reach water earlier than those of your wingies'.
2. If your altitude is about 130 feet, the torpedoes will go in a straight front.
3. If you lower your gear prior to the attack, your wingies will form a
trail behind you, so the torpedoes will go one after another. Be sure
not to go too low or slow though, as one or both of your wingies may
choose to land (on water) instead of following you. Also, watch that
you do not damage your landing gear, as well as those of your wingies,
by going too fast (when flying the Ki-67, especially).
4. If you order your wingies to change a Vee for a trail (by hitting
geardown) or vice versa (by hitting gearup) and drop some 1-1.5-2
seconds after that, while your wingies are still changing formation,
your torpedoes will spray slightly.
5. If your formation is a trail (the gear is down) and you are turning,
the torpedoes will have a moderate spray outside your turn. If you are
turning into the target, and your aim and timing are perfect, the
torpedoes will hit the same point of one ship one after another.
Take the habit of checking if your wingies have formed on you before
you drop as they will go outside some tight turns. When they lag
behind, they run full throttle to catch up with you thus travelling
faster than 200mph so their torpedoes may not arm or they may damage
their landing gear if the formation is trail. When I am flying a
formation, and need to turn, I bank 30 degrees (viewing the artificial
horizon) and keep the VSI (vertical speed indicator) at zero. This way,
the wingies stay with me in a turn.
There is a way to "extend" the effective torpedo range:
When in a Ju-88, Ki-67 or B5:
The absolute limits of a torpedo drop for the fast/short range
torpedoes seem to be as follows: 1. A torpedo will fail if dropped from
an altitude of 460 feet or above. 2. A torpedo will fail if it is
travelling at a speed of 200 mph or above when it reaches water.
So, if you drop from the altitude of 400 feet at the speed of 175 mph
(TAS), the torpedo will arm normally. It takes a torpedo about 5
seconds to reach water from the altitude of 400 feet, during which time
it travels at the plane's speed. Meanwhile, it will cover about 420
yards. That makes the fast torpedo's range 2300+420=2720 yards, and you
may already be turning away from the target at that radius from it when
your torpedo reaches water. That will give you better chance of
bringing both your sluggish wingies home undamaged. Naturally, you have
to adjust your aim accordingly, i.e. drop 5 seconds before the desired
bearing to the target (36 degrees) is achieved, or aim at the target's
stern or behind it. The downside of this method is that you have to
drop shortly before you are going to see the first tracers, so you must
be good at guessing ranges.
When in a TBM:
The absolute limits of a torpedo drop for the slow/long range torpedoes
seem to be as follows: 1. A torpedo will fail if dropped from an
altitude of 1000 feet or above. 2. A torpedo will fail if it is
travelling at a speed of 250mph or above when it reaches water.
So, if you drop from the altitude of 900 feet at the speed of 200mph
(TAS), your torpedo will arm normally. It takes a torpedo about 7.5
seconds to reach water from the altitude of 900 feet. During this time
the torpedo is travelling at the plane's speed so it will cover >700
yards. As the TBM's torpedo already has a range of 4500 yards, I do not
think there is any need to extend that range even more. Instead, this
trick is best used when making a co-ordinated attack on a defended and
maneuvering target from the short range (see "TBM dagger attack"
section in "Air attacks" above). If you drop when you see the first
tracers from the automatic acks, your torpedo will reach water about
1000 yards from the target, and will impact within 60 seconds, leaving
your enemy very little time to start turning and evade the hit.
You do not need to "extend" the range of a TBM torpedo when dropping
from a long distance as automatic acks are not a problem that way.
Rather, drop from the lowest altitude possible but achieve good
accuracy instead. There is a big advantage to a max-range low-altitude
TBM attack: enemy fleet gunners (and, probably, fighters) never see
your icon so they are only alerted by an incoming torpedo, if they can
spot it in time.
It is possible to hit a ship with air torpedoes head-on (use the trail
formation) but the accuracy of such an attack is usually lower than
that of the cross-course method, so I would not recommend you do that
unless you can not attack in the regular way for some reason.
It is absolutely useless to drop your torpedoes at the target from
stern as the fast torpedoes will only close the distance to the target
by about 900 yards when in tailchase, and the slow ones even less so.
It is a good idea to do some "recon" of the terrain offline prior to
going to the online arena. Find the fleets' spawn points, their ports'
allocations, probable routes, distances and headings, passable straits
etc. I would also strongly recommend finding out which is the main ship
of each fleet (the one you have to kill for the fleet to go back to its
port). The main ship is the one you find yourself in when moving into
that fleet by clicking its icon in the clipboard map. Also, (as I have
said before) a reasonable piece of preparation is making a practice
attack offline against the main ship of some unconventional types of
fleet (e.g. a fleet of 8 DD's in a circle), taking a snapshot of the
target fleet as seen from the drop point and inspecting it closely to
find some clear visual reference for aiming. You can also take a
snapshot of the target from directly above to get the general idea of
its formation. See Small CV 36 degrees view and Small CV 36
degrees chart as an example. This will help you to be ready to
attack any moment without finding the target's course and calculating
the attack course. Personally, I always attack the small CV fleet by
visual reference now.
A note on determining the target's speed:
Currently, in AH, you know the target's speed exactly most of the time.
I consider this indents into the realism, as the real-life attackers
could never be sure about that essential bit of data while attacking
fast targets. This very uncertainty, in my opinion, prevented the
British Swordfish torpedo bombers from hitting the German
battlecruisers during the "channel dash" in February, 1942.
To make torpedo attacks 100% realistic (in terms of the attack data), a
method must be developed to determine the target's speed with enough
accuracy by visual observations from the air. The accuracy required
should be within 2-3mph. I have not yet been able to think of any
usable way to achieve that. I still wonder if it is altogether possible
in the game. So, if someone can work out such a method, I would greatly
appreciate being advised upon that.
Fast torpedoes (Ju-88, Ki-67, B5N):
range: 2300 yards. Travel time: 1 minute 40 seconds. Speed: 47 mph (~1000 yards in 43 seconds).
Slow torpedoes (PT, TBM):
range: 4570 yards. Travel time: 4 minutes. Speed: 39 mph (~1000 yards in 53 seconds).
Maximum speed: 47 mph forward (~1000 yards in 43 seconds), 23 mph reverse.
Standard speed: 34.5 mph (~1000 yards/minute).
Maximum speed: 41 mph (~1000 yards in 50 seconds). Fleets travel at a
speed higher than standard during some 5-7 or more minutes after making
sharp turns (e.g. 180 degrees); some ships in the fleet's order will
accelerate after any turn; apparently, to catch up with the imaginary
In normal view (no zoom), the screen covers an arc of 90 degrees vs. 30
degrees in the maximum zoom-in in the pilot's view (x3) and 10 degrees
in the maximum zoom-in in the "gun ship or field" view (x9). The latter
figure (x9) I am not absolutely sure of. Besides, those two figures (x3
and x9) may only be applicable to the arc coverage of the screen, but
not to the ranges. E.g. you can see the destroyer's mast from about 500
yards away with no zoom, from 3000 yards away with the maximum pilot's
zoom-in, and from 14000 yards away with the maximum gun ship zoom-in.
That makes the ranges ratios more like x1, x6 and x28. This issue may
be cleared later, if need be.
Have you finished reading this?
Wow! You definitely have the patience to be a good torpedo bomber!:-)
Do you happen to think I am too particular to details, especially with those approach patterns?
Hope not. Well, in case you do,
1. I have never said it was going to be easy, and,
2. Recently, I have searched the AH forum with "torpedo" as the
keyword. The first link I got was a (typical, I regret to say) story
going "how much fun we had when the whole of our squadron bravely (and
aimlessly) died in the fleet acks within 30 seconds after an hour's
search. Why on earth didn't we score a single torpedo hit? Bad luck?...
Yup! Nothing but bad luck! Nxt time, mebbe..." Nope. It is not bad
luck, but the lack of preparation. Then, as you may have noticed, the
(detailed) torpedo attack methods described above contemplate hitting
the target as well as staying alive.
Why not have fun AND be effective?
There are other methods of attacking marine targets in AH than air/PT
torpedoes attacks described above. Those are: hi-alt level bombing,
low-alt level bombing, strafing/air rocket attacks, dive bombing, shore
battery/fleet guns shooting. One by one: hi-alt bombing takes a lot of
time, with your icon alerting and attracting every enemy around; and
the accuracy/impact is not good, in most cases; a shore battery has its
cone of fire that is easily avoided; fleet guns battle is a matter of
luck, that is, you exchange hits with the enemy's fleet; low-alt
bombing and other air attack methods mentioned are, in essence,
"kamikaze" attacks. You may eventually kill the main ship, but it is
going to take dozens of attacking planes to die before that happens.
With torpedoes, you can achieve that goal without any losses (see
below to get the idea of what I regularly do to the
enemy's fleet). There is no "good luck" in it. I do not mean to say
there is no bad luck sometimes but...you know what I mean.
Since I started working out torpedo tactics I find fighter
missions...well..boring:-) There's nothing as dynamic and thrilling
(and useful for your country) as a successful torpedo attack, as you
take the whole mobile enemy field away.
In a level bomber, you can achieve something that big, but only when
you do something really strategic, like taking out enemy's HQ.
There is no way you can be that useful in a fighter.
After all, air force is there for moving mud and fighter arm is only a defensive appendix to it.
One more important thing: flying, navigating and aiming in a low-level bomber is good flight/3D-thinking practice.
My intention is setting up a "torpedo school" (project name is "a
school of fish") to develop and practice group torpedo attack tactics
in AH. It will be a rook squad, as I fly for rooks (unless someone
gives me a good reason to change my country, e.g. there is another
country's squad strongly determined to develop those tactics). After
the training is completed, I have no objections against graduates going
back to the countries they came from. My only aim is promoting torpedo
attacks; giving any country an edge in marine warfare is not my aim.
31 January 2004
Author: zxs a.k.a. -oklok
zxs (Aces High, rooks)
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Last modified: 2004-02-21 18:41