- A U.S. Coast Guard-approved strobe light with hook tape glued on the back and fresh batteries inside.
- A small, waterproof flashlight (in case the strobe light fails).
- Two chemical light sticks (in case the flashlight fails).
- A glass signal mirror for daytime use. The plastic kind are cheaper and easier to find, but they don't last as long and aren't always as bright.
- A small Rescue Streamer. Nothing natural at sea looks like a long, straight line. This floating, brightly colored swath of plastic makes an excellent passive signal. You deploy it and forget about it.
- A personal 406 EPIRB. If I go overboard on the night watch, I'll call for my own rescue, thanks. It also has hook tape glued on the back.