[PSUBS-MAILIST] Landing craft

[hank pronk via Personal_Submersibles]

Hi All, after talking about it for years I have finally started building my sub launching landing craft.  I abandoned the barge idea for logistic reasons.  I am repurposing the hull from my paddle wheel boat.  I am well under way and should have the hull mods done in a week or so.  I was planning to use an A- frame to lift the sub into the water.  I have changed my mind and am sloping the front deck into the water and making a strong  fold down ramp \ door to just winch the sub onto the deck.  
I am new to this and am very paranoid on these huge lakes.  There are a lot of boats on the bottom!  My plan was to fill the hull void with plastic drums to make it un-sinkable.  I can not source barrels close to home-I can get 150 5 gallon plastic buckets for 150 dollars.  I am thinking of filling the hull void with buckets.  Any reason this is a bad idea?  I will leave a crawl space down the middle for inspection purposes.Hank
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