Originally Posted by Jim Walsh
It appears the wood core was merely a matrix to allow the GRP to be built up. If that is the case I would fill the void with rigid PU foam set in epoxy to exclude voids. The halves of the skeg could then be joined and additional layers it GRP added. A solid skeg would preclude future water
No, IMO the wood core was not only to allow the GRP to built up.
I found out that the skeg has 3 layers of different GRP:
1) a hollow GRP model (undersized) of the skeg was made, and than:
2) the wood core is placed in the GRP undersized model.
3) the cavity between the GRP model and the core is filled with resin (no chopped glass or so).
4) after that, the skeg is completely layed up with several layers of cloth and resin on the outside.
I am not completely sure, but the wood core is also for strength i think.