Today’s navy is much the same as yesterdays, and even back to the days of sail, in that hungry sailors have to eat. Today, sailors eat a hearty bowl of soup at morning stand easy. In the days of sail, they might have had to rely on chewing a fatty piece of salt-pork.
There is an entire category of nautical vocabulary dedicated to keeping a ship in safe waters, and not aground or on the rocks. Resting upon or touching the sea bottom is referred to as a grounding, which is one of the worst outcomes for a ship, sometimes leaving a vessel high and dry until the tide comes in, or not able to continue at all.