hi all

Does anyone have a diagram or knowledge of the floor arrangement
(compartments) in the keel area of a 1978 Kong and Halvorsen Island Gypsy 30
ft trawler style pleasure cruiser?

I have a keel full of water and it is under sufficient pressure that water
is finding its way up through the fibreglass hull into the bilge through a
couple of "pinholes". Not good.

I obviously want to find the external leak but also am considering filling
the hollow keel with expandable foam as the source of the leak is elusive.
All assistance is appreciated.

regards Shawn
"Scallywag"