Patrick is correct, but I assume that your are looking for more enjoyable fare?
You can make hard tack with a little extra sugar and it isn't bad, but you may have to break away from the awful food and serve a lot of fresh fish or turtle soup. There's always goat fixings. Boats kept goats for milk, cheese and the eventual meat. Eggs are common...boiled, fried and scrambled. Pork in its many forms. There is also a variety of puddings and molasses oriented desserts. Also try nuts, tropical fruits, raisens and dates.