London Boat Show

This showcase of British & international boating is opening it's doors next Friday the 6th of January. There will be plenty for all different types of boating people from dinghies up to ocean going superyachts. So why not put the date in your diary and blow those winter blues away.

help with bouyancey equation

Hi people, I trust every one had a great easter break. My problem, apart from life, is bouyancy. I dont no if you have seen "princess"  in the projects but she is a 23'cedar planked hull with an 8'2'' beam and 12 degree dead rise, weight fully loaded aprox 4500lb. we have installed a 165 hp turbo diesel instead of the 350 small block chevy that she originally had and the weight of the diesel and leg is aproxx 490kg around the same as the oridginal chev and leg.the problem is she wants to drag her bum in the water all the time. even up on the plane with the leg trimed in she wants to ride with the bow high. if i use the trim tabs to bring her down a bit it just acts as a hand break and washes off speed. My thoughts are this,would extentions on each side of the hull at the transom help.ie carry the water line aft and use them as bouyancy tanks come boarding platform, if so what would be the sugestion for length volume etc to hopefully get her to plane a bit better. i have absolutely no knowledge at all in this area so any advice at all would be appreciated

cheers john