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Brian, I meant to say the K-250 boats generally have short VBT just under the pilots seat, inside. But some like the Great White K-250 have removed them so they can have two people inside. I still don't know exactly what they replaced it with. I'll have to ask Greg Cottrell, or Scott Cassell. Szybowski From: brenthartwig@hotmail.com To: personal_submersibles@psubs.org Subject: RE: [PSUBS-MAILIST] hard ballast Date: Wed, 4 Feb 2009 15:52:29 -0800 Hi Brian, The K boats generally have a short VBT just under the pilots seat. You might also consider using a bladder type that you can let water into with a valve, and then either just dump it out when at the surface, or better yet have a high pressure electric pump that can empty it for you at depth. Another version of this is a box tank, like was used in the S101 that you operate just like the bladder with a pump. The box tank can not take internal or external pressure, it is just a holding tank. Here is a drawing of the S101. The holding tank is just behind the conning tower, and taking up the lower half of the hull. http://www.msubs.com/Images/S101%20Images/S101%20-%206.jpg Szybowski From: ojaivalleybeefarm@dslextreme.com To: personal_submersibles@psubs.org Subject: [PSUBS-MAILIST] hard ballast Date: Wed, 4 Feb 2009 14:43:01 -0800 Hi All,
I'm contemplating puting a hard ballast tank inside my pressure hull. Do any of the Kittridge subs have this same set up ?
Brian
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