One more thing
bring a couple of knives, and don't carry them all at once. If you lose one overboard you can go to your sea bag or berth and replace it in short order. If YOU go overboard, you chance losing anything and everything you've got on you. so I'd advise keeping a spare knife or two in your gear. Sleep with one. My biggest fear offshore fishing is going down in the night, (or shrimping, in the day) I kept a 5" Dexter High Carbon boning knife or 'ripper' sheathed under My pillow in those days, to cut my way out of my blankets, or any floating things I'd encounter should we have shipped water.
Bring something to sharpen the knife with, a portable sharpener like the gatco or e-z lap works. Most synthetic ropes dull ATS-55 or AUS-8 or 6 fast, and carbon steel faster.
A multi tool is a must. on a S/V 120 feet long there will most likely be an array of tools in the engine room, and if it is like every other vessel I've been on, the tools will be rusted to hell. Wrenches flaking apart, sockets full of rust, pliers froze up tighter than a nun's c***. A leatherman or something similar is handy for minor repairs to the electronics, like the GPS, LORAN, sounding machine(s), radio etc.
A marlinespike is handy, but a screwdriver works just as well, and hopefully there'll be some that aren't rusty, but even if they are they work.
I don't know if you're working on this boat, or on a vacation, but if you are working, learn your knots. at least the basics. the bowline is a must.
well, since I've gone way overboard and digressed far from the topic, I'll anchor up here. that was some boating humor.
have a safe trip, and above all, enjoy!
Peter