- Whistles: A sound-producing device such as the Seachoice Jet Scream ($4.29) whistle helps attract rescue personnel when visibility is poor. Attach one to each life jacket.
- Rope: Twenty feet of 3/8‑inch floating poly line helps keep the crew together if there's no life raft.
- First-Aid Kit: Make sure it includes essential prescriptions, as well as sunscreen and seasick medications.
- Folding Knife: A blunt-point serrated knife is less likely to puncture a life raft, but will cut lines and bandages if necessary. Surgical scissors can do the same.
- Drinking Water: The farther offshore you venture, the longer you are likely to wait for rescue. Provision your ditch bag accordingly.
- Energy Bars: Not many foods feature the shelf life or proportionate calories of energy bars. As with water, provision accordingly.
- Cash: This and copy of your passport in a waterproof bag may help get you back in the United States from foreign waters.