I have bought a standard outboard bracket for my 23ft fjord nordic - anyone got any ideas as to how I would attach this to the transom as it is rounded - has anyone done this before and if so how. Please advise
You have got a problem I imagine with a canoe stern when trying to attach a standard o/b bracket.
If you have an out board (transom) mounted rudder then the o/b must go to one side. If it has an inboard (under hull) rudder then the o/b can go centre of stern.
I think most o/b brackets I have seen have angle Al as the section to be bolted to a flat transom.
You will need to perhaps twist the angle so conform with the transom for centre mount or make up spacer blocks to allow for the change of angle or contour of the transom.
For a side mount you might need to make up a filler piece to fill the gap between the bracket and the outbourd side of the transom to get the bracket square. This could be made of wood for small gap or pieces of angle Al or s/steel One on the transom and one on the bracket with struts in between. Or you may be able to modify the bracket to increase the spacing from the transom on the outside.
So much depends on the design of the bracket and the angle of the transom.
Just a word of warning. My o/b bracket (basically home made) had 2 Al angles bolted to the transom and now after 28 years the angle Al fatigued in the bend with the weight of the o/b pulling down. So make it strong. I found the cracks before total failure.
Good luck PM me for more (useless ) advice olewill
If it is a cruiser stern, i.e. curved in all directions, I suggest that you choose where you would LIKE to mount the bracket, and cover the area plus some with sticky backed plastic. Then create a frame around this area and using resin and matt and hardwood bits build up a solid block to give a flush surface. The finished block would need to be as thin as possible over the proudest point. When cured, remove frame and plastic and clean up block. If your stern is stout enough then use the block as packing between the bracket and stern and drill and bolt up. If your stern appears too light, then glass in some hardwood scraps inside to create a stiffened area. That is probably going to create the snuggest fitting packing you can make. Otherwise it is down to carving hardwood packing blocks to an internal compound curve, far from easy believe me!