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-   -   Do American Submarines ever submerge (https://www.subsim.com/radioroom/showthread.php?t=113024)

AVGWarhawk 04-24-07 08:12 AM

Quote:

Originally Posted by FAdmiral
This thread reminds me of something I used to do in SH3. I ran the boat
down slightly (like semi-decks awash) so I could get under faster. I have
not tried it yet in SH4 but I know that you can drop the US boat slightly
deeper (feet) in the water. Whether it will make a difference remains to be
tested....

JIM

You can run the sub down to 39 feet before you have to leave the bridge. The crew will leave the bridge at 25 feet. Running this way at night during an attack is fun. Anyway, the crew leaves the bridge at 25 feet so you can run awash up to this point with crew, after that it just you standing there. Obviously your sub will submerge faster if you are running awash as you all know. I also notice once the dive planes are at 31 feet the sub really starts its fast decent.

Morts 04-24-07 08:20 AM

Quote:

Originally Posted by Overkill
US subs were not shot up with holes from Sutherlands and Wildcats to help them in a dive. :p

:rotfl: :rotfl:

SteamWake 04-24-07 09:08 AM

Just an off the cuff observation.

It seems as though the subs dive pretty quickly once the ballast has been taken on board.

It takes a while to fill the ballast tanks. Once their filled and the bow dips beneath the surface and the bow planes "bite" they go down pretty fast.

Any "definative" numbers out there on diving times ? Although Id bet there is a ton of variables. How much water were in the ballast tanks ? What kind of weather ? How efficent is the crew ? Speed ordered when diving ? What about overall weight (Torpedoes, provisions, crew members, etc.) ?


As to the diving time being "painfully long requiring time accelleration" perhaps a sub sim is not quite your style.

NEON DEON 04-24-07 01:04 PM

Quote:

Originally Posted by SteamWake
Just an off the cuff observation.

It seems as though the subs dive pretty quickly once the ballast has been taken on board.

It takes a while to fill the ballast tanks. Once their filled and the bow dips beneath the surface and the bow planes "bite" they go down pretty fast.

Any "definative" numbers out there on diving times ? Although Id bet there is a ton of variables. How much water were in the ballast tanks ? What kind of weather ? How efficent is the crew ? Speed ordered when diving ? What about overall weight (Torpedoes, provisions, crew members, etc.) ?


As to the diving time being "painfully long requiring time accelleration" perhaps a sub sim is not quite your style.

The skipper of the Nautilus (Narwhal class. 371' length) noted that in order to achieve sufficient dive speeds in combat areas it was necessary to use ahead standard or better while on the surface in the daytime.

Fluckey in his book "Thunder Below" would flood negative while running on the suface in order to speed his dive times when trouble came his way.

The Pampinito web site lists the dive time of a Balao at 30 seconds.

Qualifications for the boat to pass over to the Navy is 60 seconds.

In game, a Gato will submerge the first time between 40 and 60 seconds on a crash dive. If the second crash dive is within 2 hours of the first then, the boat will go under in 25 to 35 seconds.

cmdrk 04-24-07 03:49 PM

Quote:

Originally Posted by NEON DEON
In game, a Gato will submerge the first time between 40 and 60 seconds on a crash dive. If the second crash dive is within 2 hours of the first then, the boat will go under in 25 to 35 seconds.

2 hours - Is it the same watch diving both times?

NEON DEON 04-24-07 06:05 PM

Quote:

Originally Posted by cmdrk
Quote:

Originally Posted by NEON DEON
In game, a Gato will submerge the first time between 40 and 60 seconds on a crash dive. If the second crash dive is within 2 hours of the first then, the boat will go under in 25 to 35 seconds.

2 hours - Is it the same watch diving both times?

Good point.

I will go back and check tonight.


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