Note: This procedure requires editing a game file; creating a backup copy of the file before proceeding. Using a text editor, edit the "playconsum.txt" file in the game's "\data\econ" folder. Set all values to zeros so the entries appear as:
Sup Weight(lbs) Per person Food 0 Fruit 0 Pork 0 Rum 0
This lets you sail as long as needed only if you have one ton of those supplies are present. Note: The "Fruit" and "Livestock" commodities will still be used by the crew.