deck stepped Seidelmann 299 - Page 2 - SailNet Community
Old 05-22-2011
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Glad you got it fixed. I have a question for you that is a little off topic. When I was in North Carolina with my last boat, I drew 2'8". When I came to freshwater in Lake Michigan, I drew 3'2". What do you actually draw in salt?

1979 Seidelmann 299
Cruising-Lake Michigan

Old 05-22-2011
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There should be a difference between salt and fresh water, but not 6". Without doing the math I would guess no more than 1" deeper in fresh water.

Brian
Living aboard in Victoria Harbour
mitiempo is offline
Old 05-23-2011
Sailing fool!!!

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Brian- the last boat we brought from salt to fresh was a 1978 Neptune. She had a narrow beam and was heavy for a 24'. It did sit that deep. I was shocked. We pulled it out and had to raise the bottom paint because the "water line" of the boat paint was under water and crud was collecting on the unprotected side of the boat. You said doing the math. Is there a formula or something for the salt vs freshwater depth that a boat sits?

1979 Seidelmann 299
Cruising-Lake Michigan

Old 05-23-2011
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As I recall 2 lbs less buoyancy per cubic foot of water in fresh than in salt water. If a hypothetical 30' boat has a displacement of 10.000 lbs it displaces about 161 cubic feet of salt water and 167 cubic feet of water in fresh. A difference of 360 lbs or 6 cubic feet of water. A boat like the Seidelmann sinks 1" with the addition of 943 lbs of extra weight. So it should be lower between 1/3" and 1/2" in fresh water. If a boat sank 6" in fresh I think we would have heard about it by now.

Brian
Living aboard in Victoria Harbour
mitiempo is offline

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