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Old 05 March 2002, 07:14   #1
Country: UK
Join Date: Mar 2002
Posts: 1
What are the forces acting on the hull structure

Can anyone one tell me please what the forces are which are acting on the hull structure of a rib ?
Thanks Ryan

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Old 05 March 2002, 08:00   #2
Country: UK - England
Town: Portishead, Bristol
Boat name: "
Make: Ribcraft, Cowes Mari
Length: 5m +
Engine: Mercury 90hp 4-strok
Join Date: Aug 2001
Posts: 600
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Surely it depends on so many things

Size of RIB
Weight and power of engine
Shape of hull
Sea State
Weight of empty boat
Weight of load - and position in the boat.

Obviously a RIB sat in the marina isn't under much strain - A pwerfull heavily loaded RIB pounding through heavy seas at high speed is going to be under all kinds of strain.

Can you give some more detail as to what you are after!

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Old 05 March 2002, 10:11   #3
Country: UK - England
Town: Portsmouth
Boat name: Not sure
Make: ABC/Priddy
Length: 10m +
Engine: 2 x 500 FPT
Join Date: Jul 2001
Posts: 926
The best way to discribe the forces on the hull are LOADS & LOADS. And then more!

There is no set formula as a lot of RIB builders have found out.
A well laid up hull is one that has got a heavy gel coat first. So many builders just "colour" the hull and when it comes back in a plastic bag say that it must have been used beyond its design capability when in fact it is just a poorly built boat.

Alan P
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