Shipboard means happening on or relating to a ship. When sailors talk about shipboard life, they mean the experience of living and working aboard a vessel at sea. Shipboard duties are the tasks crew members perform while the ship is sailing, like maintaining equipment, navigating, or preparing meals in the galley.

Something shipboard belongs to or takes place within the world of the ship itself.

Life shipboard is different from life on land. Space is limited, fresh water is precious, and you can't just run to the store when you need something. Sailors develop shipboard routines to make the confined space work: everything has its place, meals happen on schedule, and crew members learn to cooperate closely. Historical accounts of shipboard conditions on long voyages reveal how challenging ocean travel once was, with cramped quarters and months away from home. Modern cruise ships offer more comfortable shipboard amenities, but even they operate by specialized rules and systems that people on land might find surprising.