Without rationing, about ten pounds each, except Nyx who can live off six pounds. This includes things like meat, fruit, and water, whether from grog or actual clean water. Using my unit system, the crew eats up one unit worth of collective food supplies a day. If you enforce rationing, they can survive on one unit of supplies for three days, however at the end of the third day we will have to roll a con save to see how well they’re holding up on limited supplies. It’s a fairly low DC (13) obviously outside influences can make this harder or easier, such as the presence of an actual chef who can make limited rations more nutritious, or spoiled food which will make the DC harder and yield worse results upon failure.