Lapstrake Scantlings

[Dutch Peter]

Originally Posted by rxcomposite

Dutch Peter,

Yes it is. It says Rules and Regulations for Yachts and Small Crafts. As i look closer, the print says May 1979 for the hull construction.

I have the new Rules. Its named "Classification of Special Service Craft".

But, regrettably these do not include wood constructions.

[Dutch Peter]

Originally Posted by PAR

The typical Lloyds spec scantlings for lap hulls produced heavier then necessary craft. They had to insure them, so error on the heavy side was a simple business decision.

Correct PAR, but is that not the case with every set of rules of a Class Society? It's never an optimum of weight and strength, there's always a safety factor!
But it still is a good guidenance for novice designing his wooden boat and the more experienced designer knows where he can cut corners.

[AWolfe]

Par - believe me, no offense taken. Thanks for all the information guys. Good stuff!

[Raggi_Thor]

I thought this was an interesting question so I searched some Norwegian pages.
Here is one set of practical rules from Jeppe Jul Nielsen:
http://home.online.no/~jeppejul/HxByggeregler.html
(try to read this Peter :-)

I attach an xls showing the rules for skin thickness.

[Dutch Peter]

Ragnar,

Nice website, when do you expect the translation (form Norwegian to Dutch to English?!!). I estimate 2 months!
Spreadsheet is usefull!!

[Raggi_Thor]

The meter to feet conversion wasn't quite right in my xls, 5m ~ 16 feet 5 inches (?)