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PostPosted: Wed Jul 28, 2010 4:35 pm 
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Joined: Wed Jul 28, 2010 4:27 pm
Posts: 2
Looking for information on the hull shape, lines plan, 3D model, offsets...

Any information would be helpful. At a min, I need to know the full hull volume.

Does anyone have access to this information.

Thanks and have a Hobie Day


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PostPosted: Sun Aug 01, 2010 2:42 pm 
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Joined: Fri Dec 28, 2007 11:23 am
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Location: Lake Norman NC
fill the hulls with water and measure the weight or gallons that empty out .this is easily converted to a volume measurement don't forget to multiply the results by 2 for the entire boat volume. Is your thought to get displacement this is even easier it is the boat weight.

I think your question should have been how many people will the 21 hold and still be fun to sail
I have carried 6 adults and a few kids and the boat still sailed great.
Much better than a 14 with 2 or a 16 with 4 or even a 18 with 4 on board

As for lines a CADD computer and measurments in cross section fo every 1' of lenght would probably work.

The first comment was not to be taken seriously that much weight would probably damage the boat :lol:


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PostPosted: Sun Aug 01, 2010 2:51 pm 
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Location: Columbus, Indiana
We took our 21SE out on a night sail with a total of 19 people on board(mostly small kids) and had a great time watching the 4th of July fire works and swimming.It was a lot of fun....Bill 404 21SE

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PostPosted: Mon Aug 02, 2010 3:59 pm 
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Joined: Wed Jul 28, 2010 4:27 pm
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Thanks for the input, however I am looking into designing trimaran using the H21 SE hulls and rig. The volume of the hulls is helpful in developing the rest of the design, or knowing what my reserve buoyancy will be/power to carry sail etc.

I just may have to measure and model up the hulls to calculate this, just thought someone would have the original design on hand.

Cheers & have a Hobie day


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PostPosted: Mon Aug 02, 2010 4:17 pm 
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Joined: Tue May 27, 2003 12:44 pm
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Location: Oceanside, California
The original drawings do not include any width / height dimensions at segments on the hull.

Boats in the day were typically designed like surfboards. Hand shaped.

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