One weeks meals on a boat... how basic can you get.... well here goes.
Baking potatoes - tins of chilli - grated cheese - 1/2 lb butter for the spuds.
Large tin of Heinz tomato soup, tinned of new potatoes , tin of vegetables of choice - chunky bread - more grated cheese
Fray Bentos Pies or Puds , home made chips (made from baking potatoes , cut into chips, par boil , baked in oven with a dash of oil, and baked beans
Tins of chicken supreme - Basmati Rice (the boil in the bag type)
Large tin of ham - eggs and home made chips again.
5 days and if you are staying for 7 then I am sure you can find a shop to serve you with fresh whatever you fancy.
Long life milk.
All very mundane but none of it needs a fridge or freezer, except the butter needs to be kept in a fridge.