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Old 07-25-2014, 03:49 PM   #61
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City: South FL
Vessel Name: Oliver
Vessel Model: Nordhavn 47 Hull# 12
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Originally Posted by markpierce View Post
A boat has less draft in saltwater as compared to freshwater.

So all boats in FW are FD???? Ohhhhhh Eric where are you??????
Thanks, Oliver
M/V Oliver
Nordhavn 47 Hull #12
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Old 07-26-2014, 05:19 AM   #62
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For a boat assembly shop the mold cost is a big expense.

With the downside of operating a SD boat at FD, Trawler Crawler, speeds not immediately visible to new customers the choice is for the SD hull.

By selecting different power levels the assembler can claim what ever he wished in terms of SD speed boat or FD cruiser.
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Old 07-26-2014, 12:10 PM   #63
City: gulf coast
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Salt water is indeed denser than fresh by about 2.5%.

Of course cold water is also denser than hot so you boat will displace even less volume of water at near freezing than in mid summer by about 1%
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Old 07-26-2014, 03:55 PM   #64
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If you get the water cold enough, the boat darn near doesn't displace any water...
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Old 07-28-2014, 08:44 PM   #65
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Originally Posted by rwidman View Post
The point is, the water is supposed to stay on the outside of the boat so unless it has sunk, there should be very little difference,

The exception would be an I/O (stern drive) but few trawlers have these.
There is a huge difference. You will never hear of a fresh water boat having to cut out corroded fuel tanks (frequently discussed on this forum), discard corroded air conditioners, corroded hydraulic pumps or replace corroded wiring.
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