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Yes, they pumped the water into a trim tank that was at the time not under pressure. Once this tank was near full, air pressure above ambient presure was added and this water was expelled by opening a valve near its bottom...earlier wast collection tanks worked on this method with this valve being closed prior to sending air to avoid detection. Special pumps capable of handling waste solids perform this feat today. This extra pressure was then vented off slowly thru charcoal filters to reduce the stench,(although not really great at this) or perhaps in this case with the use of an electric compresser so as to conserve air. Great movie! another is U571. David Bartsch From: ShellyDalg@aol.com Date: Tue, 6 Jan 2009 00:58:18 -0500 Subject: Re: [PSUBS-MAILIST]Bilge pumps ? To: personal_submersibles@psubs.org Hi guys. I was just thinking about what it's gonna take to get this thing ready to go down.( Got a list and I'm checkin' it twice) A thought occurred to me, brought on by the movie "Das Boot" that I saw a week or so ago. These guys are sunk, stuck, and screwed !!! ------------ Now, to get un stuck.......... they pump the onboard water into somewhere, and manage to re-float their boat. O.K......here's my question. "Is there a use for a bilge pump on a psub" and if so, WHY,........ and more importantly......where did that water actually go? Got any thoughts? Frank D. It’s the same Hotmail®. If by “same” you mean up to 70% faster. Get your account now. |