Re: [PSUBS-MAILIST] Soft Tanks

["Dan H." <Jumachine@comcast.net>]

Jim,

 

More important then the percentage of your total subs weight is the weight they will allow to be pushed out of the water.  Take the weight of the water your tanks will hold and figure how much of the sub will be lifted out to see how much free board you'll have.

 

Dan H.

----- Original Message -----

From: Jim Kocourek

To: personal_submersibles@psubs.org

Sent: Saturday, December 27, 2008 3:43 PM

Subject: [PSUBS-MAILIST] Soft Tanks

Hi All Psubbers,

 

I have completed preliminary design of my soft tanks and am looking for input. They will be shoulder tanks tapered from the sides and ends at 2-3 degrees to minimize the chance of bubble entrapment. As they are now the will support about 12 % of my subs total weight.

 

The bottoms will be mostly closed with rows of 4 inch diameter holes to minimize burping in rough water.

 

Does anyone have a guideline on this area as to what percentage is good etc.

 

Best Regards,

 

Jim K