Technology and Operations
This forum is for discussing technological & operational matters pertaining to U-boats.
Re: Torpedo Launching
Posted by:
ROBERT M.
()
Date: October 29, 2003 05:33AM
Ken, et al:
On a previous post I asked if U-boats shifted (moved) seawater to and from trim tanks using compressed air. I've received no response yet.......If they did, this would be another source of air pressure in the boat,, as the tanks would have to be vented inboard. HELP!!!!!
If a U-boat carried 22 torpedoes inside the pressure hull, and had fired all of them, a substantial pressure would have built up from venting the tubes inboard.
All topside access hatches on Fleet boats utilized a heavy coil-spring
to act as a counterweight in opening the heavily-constructed hatches,
with the exception of the lower conning-tower and lower escape trunk hatches, which utilized two lever-type dogs to seal them shut.
A retractable "spinner" handle was installed on the inner conning-tower hatch handwheel, for rapid opening and especially sealing the hatch on a dive. The shutting of the conning tower hatch was a two-man evolution, consisting of the CO or OOD pulling the hatch shut with an attached lanyard and the quartermaster spinning the handwheel to seal the hatch.
Interesting thread..........
Sheers,
ROBERT M.
On a previous post I asked if U-boats shifted (moved) seawater to and from trim tanks using compressed air. I've received no response yet.......If they did, this would be another source of air pressure in the boat,, as the tanks would have to be vented inboard. HELP!!!!!
If a U-boat carried 22 torpedoes inside the pressure hull, and had fired all of them, a substantial pressure would have built up from venting the tubes inboard.
All topside access hatches on Fleet boats utilized a heavy coil-spring
to act as a counterweight in opening the heavily-constructed hatches,
with the exception of the lower conning-tower and lower escape trunk hatches, which utilized two lever-type dogs to seal them shut.
A retractable "spinner" handle was installed on the inner conning-tower hatch handwheel, for rapid opening and especially sealing the hatch on a dive. The shutting of the conning tower hatch was a two-man evolution, consisting of the CO or OOD pulling the hatch shut with an attached lanyard and the quartermaster spinning the handwheel to seal the hatch.
Interesting thread..........
Sheers,
ROBERT M.