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Old 03-25-2007, 11:16 AM   #1
yamla
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Default Submarine Specs

I couldn't find the specifications on the submarines in my manual or in the (different) pdf manual on the game DVD. So I assembled a list of specifications. I do not know how accurate these numbers are to the real submarines and I do not know how accurately Silent Hunter 4 models the subs anyway. Additionally, the underwater endurance and the range numbers are particularly suspect. I welcome corrections.

United States S class submarine (1920)
14.5 knots surfaced
11 knots submerged
unknown endurance submerged
200 ft test depth
4 forward torpedo tubes
12 torpedos
3420 - 5500 miles endurance

United States Porpoise class submarine (1935)
20 knots surfaced
8 knots submerged
unknown endurance submerged, very low endurance in game
250 ft test depth
4 forward torpedo tubes
2 aft torpedo tubes
16 torpedos
22,000 miles range

Salmon class submarine (1937)
21 knots surfaced
9 knots submerged
Unknown endurance
250 ft test depth
4 forward
4 aft
24 torpedos
11,000 miles range

Sargo class submarine (1939)
21 knots surfaced
8.75 knots submerged
Unknown endurance
250 ft test depth
4 forward
4 aft
24 torpedos
11,000 miles range

Tambor class submarine (1940)
20 knots surfaced
9 knots submerged
48 hour endurance submerged
250 ft test depth
6 forward torpedo tubes
4 aft torpedo tubes
24 torpedos
11,000 miles range


Gar class submarine (1941)
20 knots surfaced
8.75 knots submerged
48 hour endurance submerged
250 ft test depth
6 forward torpedo tubes
4 aft torpedo tubes
24 torpedos
11,000 miles range

Gato class submarine (1941)
20.25 knots surfaced
8.75 knots submerged
48 hour endurance submerged
300 ft test depth
6 forward torpedo tubes
4 aft torpedo tubes
24 torpedos
20,000 miles range

Balao class submarine (1943)
20.25 knots surfaced
8.75 knots submerged
48 hour endurance submerged
400 ft test depth, 600 ft emergency
6 forward torpedo tubes
4 aft torpedo tubes
24 torpedos
20,000 miles range
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Old 03-26-2007, 03:56 AM   #2
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Sweet! This should be stickied imo...
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Old 03-31-2007, 12:58 PM   #3
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The manual lists the maximum range of the Balao and Gato subs as 11,000 miles.
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Old 03-31-2007, 04:31 PM   #4
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My S-class only gets 12kts surfaced with all engines on propulsion(no charging). And I think 9kts submerged.
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Old 04-20-2007, 10:22 PM   #5
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I test every new sub on 1st patrol and determine these numbers. Then I know for sure where I stand when the battle starts heating up.
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Old 05-05-2014, 04:41 PM   #6
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Quote:
Originally Posted by greekfire View Post
I test every new sub on 1st patrol and determine these numbers. Then I know for sure where I stand when the battle starts heating up.
Gar calass range 11000 km(ahead 1/3, 10000km @ 2/3) not nM this makes some campaigns impossible:
Pearl to Tokyo is ~9000km refitting/resupplying didn't work so I've run out of fuel before any action. Only narval had sufficient range - 46000km @ ahead 2/3
also crushing depth for gar is 140 meters and 145 for narval

UPPSS archeologist woken up in me - sorry
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Old 05-05-2014, 07:56 PM   #7
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Quote:
Originally Posted by Zajc3w View Post
Gar calass range 11000 km(ahead 1/3, 10000km @ 2/3) not nM this makes some campaigns impossible:
Pearl to Tokyo is ~9000km refitting/resupplying didn't work so I've run out of fuel before any action. Only narval had sufficient range - 46000km @ ahead 2/3
also crushing depth for gar is 140 meters and 145 for narval

UPPSS archeologist woken up in me - sorry
ever thought of running at 9 kts on the way there? or refueling at midway? ive never had a problem with fuel and i have spent time with the little S class!
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Old 05-05-2014, 11:43 PM   #8
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Since there is some interest in this, I edited the values showing the real-life figures from SUBMARINES THROUGH 1945, by N. Friedman:
Quote:
United States S-18 class submarine (1939 values)
13 knots surfaced
9 knots submerged
20 hr. @ 5 kt.
200 ft test depth
4 forward torpedo tubes
12 torpedos
3420 nm @ 6.5 kt. endurance

United States Porpoise class submarine (1935)
19 knots surfaced
8 knots submerged
10 hr. @ 5 kt., 36 hr. at min. speed
250 ft test depth
4 forward torpedo tubes
2 aft torpedo tubes
16 torpedos
6,000 miles @ 10 kt.

Salmon class submarine (1937)
21 knots surfaced
9 knots submerged
48 hr. @ 2 kt.
250 ft test depth
4 forward
4 aft
24 torpedos
11,000 miles @ 10 kt. range

Sargo class submarine (1939)
21 knots surfaced
8.75 knots submerged
48 hr. @ 2 kt.
250 ft test depth
4 forward
4 aft
24 torpedos
11,000 miles @ 10 kt. range

Tambor class submarine (1940)
20.4 knots surfaced
8.75 knots submerged
48 hour @ 2 kt. endurance submerged
250 ft test depth
6 forward torpedo tubes
4 aft torpedo tubes
24 torpedos
11,000 miles @ 10 kt. range

Gato class submarine (1941)
21 knots surfaced
9 knots submerged
48 hour @ 2 kt. endurance submerged
300 ft test depth
6 forward torpedo tubes
4 aft torpedo tubes
24 torpedos
11,000 miles @ 10 kt. range

Balao class submarine (1943)
20.25 knots surfaced
8.75 knots submerged
48 hour @ 2 kt. endurance submerged
400 ft test depth, 600 ft emergency
6 forward torpedo tubes
4 aft torpedo tubes
24 torpedos
11,000 miles @ 10 kt. range
The figures for surface range (endurance) are based on "normal tankage". He gives figures for using ballast tanks for fuel as well, but they seem dubious to me, so I just gave the normal figures.


You may have noticed that you do not get nearly the submerged endurance that you should, in the game. Much has been written about this. Suffice it to say, the game model is broken - badly!
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Old 05-06-2014, 09:22 AM   #9
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well i read that boats that were made even in the early 1900's before the s-boat could get a range of around 100 nm, even the worst could get up to around 60 nm! but the s-boat as cool as it is...25 nm...
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Old 05-06-2014, 02:20 PM   #10
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Quote:
Originally Posted by greekfire View Post
I test every new sub on 1st patrol and determine these numbers. Then I know for sure where I stand when the battle starts heating up.
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Old 05-06-2014, 10:57 PM   #11
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Quote:
Originally Posted by Akotalaya View Post
well i read that boats that were made even in the early 1900's before the s-boat could get a range of around 100 nm, even the worst could get up to around 60 nm! but the s-boat as cool as it is...25 nm...
The range means little without knowing the specified speed. I'm not sure where you get the 25 nm figure. 20 hr. @ 5 kt. is 100 nm. This is actually a very high level of submerged performance.
[It occurs to me you might be referring to actual game performance. In any case, battery capacity/charging is really messed up in the game. Fortunately, Ducimus thought of a fix for this. Otherwise, one must just accept a poor level of performance. Sad that the game was released with these sorts of bugs.]

Designers were forced to accept that they had to compromise submerged performance to achieve surface performance, or vice-versa. The S-class were designed for high underwater speed, and almost all successive classes in WWII were designed for surface performance.




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Quote:
I test every new sub on 1st patrol and determine these numbers. Then I know for sure where I stand when the battle starts heating up.
I used to do that in SHCE.

Last edited by TorpX; 05-06-2014 at 11:10 PM. Reason: added comment in yellow
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Old 05-07-2014, 06:37 AM   #12
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TorpX i run at ahead slow, ive even tried 1 kt..ive tried it all...but from what research ive done the s-boat should atleast have a range of 100nm underwater and sadly it doesent, and older boats they apparently had better performance than that..5 kts just drains the battery too fast, ive never had much luck with that boat under water
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Old 05-07-2014, 08:07 AM   #13
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The underwater performance of all the boats is hosed. The S Class is the worst as it was included at the last minute. Anything below 5 or 6 kts will actually use MORE battery power than running at a higher speed. Try running the S Class out of power and time how long it takes to recharge them to 100% at All Stop. Oh you might wanna try that somewhere safe, like in the middle of your home base or something.
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Old 05-07-2014, 09:27 AM   #14
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so then what speed would you recommend going to get the most out of my battery?
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Old 05-07-2014, 09:42 PM   #15
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Quote:
Originally Posted by Akotalaya View Post
TorpX i run at ahead slow, ive even tried 1 kt..ive tried it all...but from what research ive done the s-boat should atleast have a range of 100nm underwater and sadly it doesent, and older boats they apparently had better performance than that..5 kts just drains the battery too fast, ive never had much luck with that boat under water
Yes, I've had to struggle with the S-class battery issue. When I did submerged patrols, I would generally run at 1.5 kt., or thereabouts. That was the only way I could recharge the battery in one night.

Thankfully, those days are over. A major goal of ISP was to fix the horrendous battery issues.
Try using this mod loadout (with SH4 v1.5):
RFB_2.0 (Real Fleet Boat)
RFB_2.0_Patch_23April2010
RSRDC_RFB_V575 (Run Silent Run Deep Campaign)
RSRDC_RFBV5xx_Patch1
Improved Ship Physics 1.1

[You can forget RSRDC if you want, but most people like it.]
This will get you much better battery performance. It won't be quite up to the specs I listed, but pretty close. Follow the directions in the mod, as regards recharging. Other classes of US subs are fixed, as well.


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