Here's a checklist I put together a couple of years ago to use before setting out away from shore. Any additions or comments welcome.
OFFSHORE CHECKLIST
Trysail rigged w/ sheets/ready
Storm
jib rigged w/ sheets and ready
Floorboards screwed down
Life raft up on deck and secured
Ditch bag stocked (see separate list) just inside
hatch
Pail on deck
Jacklines checked and ready
Everything secured down below
Sea
anchor accessible, rigged, and ready
Solar panels on mount and plugged in
All
hatches/ports closed and tight
Emergency porthole boards accessible and ready
Companionway boards in
Companionway cloth on
Lee cloth on
Normal on-deck stuff up (print
charts, food, coffee,
GPS,
harness, jacket, water, food, clothes, raingear, binocs., etc.)
*see separate list*
Batteries on "HOUSE" only.
Manual
pump check, handles accessible
Winch handles up
Elec.
pump check
Water check
Fuel check
Rigging check
Anchor stowed
RIB deflated and stowed