The workhorse tool when I'm doing fiberglass repairs is a
DeWalt
DW402 4-1/2 inch angle grinder
With a
36-grit sanding disc on a
rubber backing pad, I can quickly grind away fiberglass to replace
deck coring or make other repairs. I've mostly used this tool for such
repairs and, in spite of the coating of abrasive fiberglass dust, it's
still running fine.
I have used it with a
diamond blade to cut a freezer in half, lenthwise, to get it out of
the basement. (The door had been added after this International Harvestor
freezer had been moved in, and the freezer was bigger than the doorway.)
It made a bit of smoke and noise, but it made short work of that old heavy
steel freezer.
A serious magazine for serious sailors. This magazine deals extensively
with all sorts of navigation, from ded reckoning to radar and GPS. Also
significant coverage of other issues of offshore (or other challenging) sailing.