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Re: PRV 2 was Re: [PSUBS-MAILIST]
At 17:06 +0100 2/12/02, Carsten Standfuß wrote:
>Hmm - No Top-hatch.. only accessible
>from the bottom hatch. You need diving
>equipment or an small Offshore supply boat
>with an A-Mast crane to get inside..
>
>A cheap one should be around 150.000 USD.
>Maybe to assamble a top hatch is cheaper.
I've wondered about this. In ambient-pressure subs that are "bubbles," do the occupants usually have to swim in from the bottom? Or do you have to seal a hatch in the bottom, enter through the top, seal the top hatch, and then open the bottom one before diving? I mean, otherwise it'd just sink like a regular boat with a hole in the bottom, right?
Or do they have big enough MBT's that they float even with an open top and bottom hatch? Or aren't there enough boats like this for there to BE a way it's "usually" done?
--
David
buchner@wcta.net - MN, USA
http://customer.wcta.net/buchner