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Old 31-01-2007, 15:52   #1
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adding weight to a boat.

How much weight is safe to add to a boat? 200 gallons of water weighs over 1,600 pounds. plus gas (30 gallons), food, waste water tank, batteries, anchor chain...

just curious.
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Old 31-01-2007, 15:57   #2
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Chad,

Tha will depend on the size and displacment of the vessel. What are we talking about here?

Cheers,

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Old 31-01-2007, 16:35   #3
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Most boats that come from the factory consider that the tanks would be filled at some point and you would carry normal gear. The only time you should have a problem is when you install heavy items or decide to expand tankage.

Something like a large genset at the factory might have appropriate ballast removed to account for the extra weight, If you are just filling the lockers as full as possible you'll need to feel secure that you boat has sufficient displacement. Many cruising boats are designed from the get go with this in mind. The "heavy cruiser' carries more stuff! In serious weather it all matter most of all.

If you want to strap and extra 60 gallons of fuel some place or carry an extra 25 gallons of water you may need to adjust for the trim of the boat and of course anything heavy needs to be very secure as in "can't come loose in a knock down" type secure. Heavy objects loose in a knock down could be fatal for the boat or a crew member. Consider a heavy object that weight as much as a brick flying past your head. Now imagine a group 4 battery. Even a few pounds in flight can lay some hurt on you or worse drive a hole in something or at the very least destroy itself on impact.

You'll want to avoid overloading the stern or bow and attempt to get the heavy stuff as low as possible. Note your water line before you start loading and again after to see what you have done.
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Old 02-02-2007, 09:58   #4
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16,000# displacement.
The factory installed 40 gallons of water in the bow, there is room for more. There is quite a lot of space under the cabin sole, and space under the quater berths. I suppose I will just play things by ear this spring.
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Old 02-02-2007, 11:29   #5
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As you add the weight, just remember... the lower the weight is (and more toward the keel, as opposed to in the ends) the better the boat will handle and the safer it will be.
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Old 02-02-2007, 13:53   #6
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You are not alone in this. Many cruisers admit to "raising the water line." So much stuff is added that they repaint bottom paint and trim farther up the hull.

George
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Old 02-02-2007, 14:06   #7
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if you raise the waterline by loading the boat beyond what the designer intended you are making it less safe. It's just a matter of degree.
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Old 03-02-2007, 01:54   #8
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Why?

What you don't say is your reason for adding extra weight.
The Privateer 35 would seem to be an older, relativly narrow beamed fibreglass boat.
As such I would not expect it to carry a lot of extra weight well.
The loads from any heavy item in a boat need to fed into the structure in an appropriate manner.
It may be possible to contact the designer Thomas Gillmer.
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Old 03-02-2007, 03:16   #9
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Quote:
Originally Posted by Sunspot Baby
You are not alone in this. Many cruisers admit to "raising the water line." So much stuff is added that they repaint bottom paint and trim farther up the hull.

George
What should happen instead is get rid of some of the stuff you don't use, or get a bigger boat to carry all the extra stuff.

Expecially on a Multihull

Dave
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Old 03-02-2007, 21:30   #10
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Does water run into the cockpit when all is aboard?

That is about the max that people load it. As others have said. Take less stuff. Performace is hurt, Cats are said to be worse.
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