Stretching a steel hull

[Big H Buck]

Hi Folks

This is my first post.

First, I'd like to say how much I enjoy this forum. It has been a valuable
site for knowledge.

I just purchased a 34 ft. steel hull boat that was in less than favorable condition. The superstructure was very ripe so the decision was made to
replace it with a new steel cabin. Being a ticketed welder has allowed me
an advantage over some folks that would look at this boat and walk away.

Anyway,while standing back and looking at this hull, I had a thought.
Could this hull be stretched about 6 ft without causing any adverse affects
on its seakeeping abilities, or stability, or steering.

My idea is to add 6 ft.to the stern and possibly up-sweep this addition
to slightly above the waterline.

Any thoughts or ideas would be greatly appreciated.

Thankyou in advance

Big H Buck

[Pericles]

Pictures please.

Pericles

[MikeJohns]

Ditto.... a picture or drawings would help.

you also might want to state the plate thickness and framing scantlings, if built heavy enough there should be no structural problem. Then you need to consider the added mass , added bouyancy? and trim.

Any idea who the designer was ?

[Brent Swain]

Could be done. One of mine was done this way, altho he said after the project he'd have been better of to buy a load of steel and start from scratch. Fairing the lines involves cutting the chines, hull deck joints etc and welding in thin pie shaped pieces to avoid a lump or straight run there. Is it sprayfoamed? That stuff burns like gas once it gets going. I knew a guy who used a sawzall to reduce the chance of setting the works on fire and swore by it.
Brent