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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 |
Sweet! This should be stickied imo...
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The manual lists the maximum range of the Balao and Gato subs as 11,000 miles.
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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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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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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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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. |
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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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. Quote:
I used to do that in SHCE. :yep: |
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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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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so then what speed would you recommend going to get the most out of my battery?
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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. Try using this mod loadout (with SH4 v1.5): |
I've noticed that ahead 2/3 seems to get the best performance for the trade off of speed vs. battery life.
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I've been running a Gar for my boat out of Pearl... and 1/3 allows me to stay submerged during daylight hours with about 40% of my battery remaining. I'm guessing that the 48 hour endurance is real world as opposed to game?
I started playing with the S-Boats out of Cavite.... They're rough. Akotalaya, with the Gudgeon (A Gar class boat) I've found that she cannot go from Pearl to the home islands and back on one tank.... My first trip out, I tried handling her like I had been with my S-32 and, having kept an eye on my fuel state, I headed back at standard on the surface. At about the halfway point, I realized I wasn't going to make it unless I changed things... So, I reduced speed to 1/3 and adopted running submerged during the day and on the surface at night. I managed to limp into Midway, refuel and head back to Pearl at standard, on the surface. Since then, I refuel at Midway after a surface run, and then proceed to my patrol area at 1/3, with daylight hours submerged and night time surfaced. Even still you really have to keep a close eye on your fuel state. Once you hit the 50% mark you really have to think about heading back to the barn (probably sooner if you're farther out than Kyushu). Hope this helps! Torpx, I'll have to pick up those mods... (currently only running the radio ones...if they can be considered mods!) |
Fizwalker dont run submerged unless you have to, because recharging batteries does burn more fuel, and as far as running 1/3, dont do that on the surface or you will only fo a few thousand miles at that speed, ive found that fleet boats normally get the best range at around 9 kts, on a full tank ive gotten up to 23,000 nm..allowing me to stay in enemy waters longer and come back with an empty torpedo load because im not having to head home for refuel, i will have to take the gar class out for a patrol or two and see what she can do! i love trying new things
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so far on full realism runnign at around 9 kts i have gotten the gar to reach a maximum range of 21,000 nm..she has been a decent boat to me so far, ill see what the performance under water is when i run into a ship! |
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Almost forgot, is the extra fuel that the diesels use enough to offset the savings by using batteries for 12 hours? (Gar seems to charge the things in a few hours while on the surface....) Quote:
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