Passage Provisioning: Feeding a Crew for 30 Days at Sea Without Losing Your Mind

A 30-day passage — whether that’s Galápagos to the Marquesas, the Canaries to the Caribbean, or a well-planned northern route from Bermuda to the Azores — forces a level of provisioning discipline that coastal cruisers rarely develop. Run out of fresh food on day 18, and you’ve got 12 days of rice and canned beans ahead. Provision badly and you end up with crushed eggs, a moldering onion hammock, and a crew eating protein bars. Here’s the system that actually works.

Start With the Calorie Math

Offshore crew burn roughly 2,500 to 3,500 calories a day depending on conditions, watch load, and body size. For a couple, that’s 5,000 to 7,000 calories a day, or 150,000 to 210,000 for a 30-day crossing. Break that into 30 percent protein, 30 percent fat, 40 percent carbohydrates, and you have a shopping list template that doesn’t depend on a specific cuisine.

Plan 35 days of food for a 30-day passage. The extra five days are not fat — they’re the margin you need for a stalled front, a broken engine, or a medical diversion.

The Three Food Layers

A resilient passage pantry has three layers. The first week is fresh — the crisp produce, the good cheese, the last of the bread, the yogurt. You eat these deliberately in the first seven to ten days because they will spoil. The middle two weeks are durable — cabbage, carrots, potatoes, onions, apples, eggs, hard cheese under wax, cured meats, long-life UHT milk. These keep if you bought them right and store them right. The final stretch is the shelf-stable layer — rice, pasta, beans, canned proteins, dehydrated vegetables, tortillas in vacuum packs. The psychological trick is to rotate through the layers so the crew never feels like they’re entering a dark age.

Storage That Works

Eggs keep for four weeks unrefrigerated if they were never refrigerated. Buy them from a farm market, coat them lightly in mineral oil or Vaseline, turn the carton weekly, and they will still be fine at day 28. Refrigerated eggs from a supermarket won’t last the same way. This is the single biggest provisioning upgrade most new offshore cruisers make.

Cabbage wrapped in newspaper, stored in the bilge where it’s cool, keeps 4 to 5 weeks. Onions keep 3 to 4 weeks in a hammock where they get air flow. Carrots stored in a sealed container with a damp paper towel keep 3 weeks. Potatoes kept in the dark, with apples to absorb ethylene, keep 3 weeks. Apples keep 4 weeks in a cool bin. Oranges keep 3 weeks. Avocados, if bought rock-hard, ripen in sequence over 10 days.

The Menu Loop

Don’t try to plan 30 unique dinners. Plan a 7-day menu loop that works with your ingredients and repeat it four times. Crews don’t mind repetition on passage — they do mind a meal they hate. Pick your crew’s five favorite easy dinners, two new experiments, and loop them. Save the fancy meals for landfall day.

Breakfasts and lunches are where most boats go wrong. The crew coming off the 4 a.m. watch doesn’t want to cook. Prepare a week’s worth of overnight oats, hard-boiled eggs, and pre-made wraps on day one of each loop. This is the single change that most improves morale.

The Galley Rules

One pot, one pan, one cutting board, at sea. Anything that requires a food processor or three simultaneous burners gets cut from the menu. Gimbaled stoves are for hot food, not haute cuisine. The pressure cooker is the most underrated offshore appliance; it cooks beans from dry in 30 minutes, which saves propane, water, and sanity.

Don’t Forget the Treats

Provision a locker with chocolate, good coffee, a bottle of rum, and snacks your crew genuinely loves — and hide it until the midpoint of the passage. Day 15 is when morale drops; a bar of dark chocolate that nobody expected is worth three hours of good sleep. This isn’t sentimentality. It’s logistics.

The crews who arrive in Hiva Oa rested and well-fed did the spreadsheet in the marina in Panama. The ones who arrive thin and cranky winged it. Provisioning is a paper exercise that happens before the lines come off the dock, and it is one of the few parts of passage-making you can get 90 percent right on your first try.