On Tue, 4 Jan 2005 21:42:09 +1100, "Grumpy"
wrote:

Hiya,

I have a 15Ft Fibreglass half cabin (Carribean Sandpiper). It developed a
crack in the gelcoat and took on a bit of water, That has all been patched
and sorted, but I want to install an inspection port in the deck. Is there
way to work out if there are supports under the floor, or are the more
likely to be in certain areas, I do not really want to cut/damage them
installing the port. Any ideas thanks

I don't know if that is a foam core boat, but if there isn't an
inspection port or way to view the hull from inside the boat, then I
suspect it might be foam filled or cored..

You might want to "thump" it out by tapping out the interior with a
small rubber hammer. Any solid thump and your on something solid,
hollow sounds and it's space. Even then, though, you might want to be
careful.

Good luck.