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Old 23-12-2012, 13:11   #1
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changing the draft on a sail boat

I was wondering if a draft on a boat could be changed ?? I am looking at a boat that is 65' long and has a draft of 7'6". My question is can it be changed to a draft of 5' and at a reasonable cost ? The boat is a 1999.
Also can the existing keel be modified to a wing .
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Old 23-12-2012, 13:14   #2
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A number of C&Cs have had keels shortened and torpedeos added. Cheap - no. Possible yes. SWAG - 10k
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Old 23-12-2012, 13:22   #3
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Re: changing the draft on a sail boat

It is probably up to the specific design. Get the drawings and visit a naval designer.

If the original designer is still around, you may ask them up first.

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Old 23-12-2012, 13:34   #4
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Re: changing the draft on a sail boat

Definitely direct your questions to a naval architect, preferably one who has lots of experience with the type boat you are purchasing.
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Old 23-12-2012, 13:42   #5
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Re: changing the draft on a sail boat

Go to Mars Metal or Mars keels. They do this all the time.
MarsKeel Home | MarsKeel
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Old 23-12-2012, 13:46   #6
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Re: changing the draft on a sail boat

There is always another side to changing something on a boat, in this case it would be reduced righting moment or increased displacement if a bulb or a wing is added to the bottom of a shortened keel. Perhaps even more wetted surface area? Or perhaps more torsion where the keel mounts? Rarely do you get something for nothing when modifying a boat.
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Old 23-12-2012, 14:16   #7
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Re: changing the draft on a sail boat

Quote:
Originally Posted by rancher44 View Post
I was wondering if a draft on a boat could be changed ?? I am looking at a boat that is 65' long and has a draft of 7'6". My question is can it be changed to a draft of 5' and at a reasonable cost ? The boat is a 1999.
Also can the existing keel be modified to a wing .
Losing 1/3 of your draft probably isn't possible without seriously compromising your sailing ability and resale value., But I bet you could get the draft down to 6'6" using the Mars Metals folks.

As mentioned several times, talk to an NA.
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Old 23-12-2012, 14:45   #8
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Re: changing the draft on a sail boat

Thanks for the advice . You all have answered my question
I think I just need to buy get a different boat .
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