A vessel cook works in a galley on an offshore oil rig, cargo ship, or commercial ship, such as a cruise line. You may help oversee several onboard deckhands who assist in the galley, prepare and maintain kitchen equipment and supplies, and participate in food preparation and cleanup. In addition to your daily responsibilities in the kitchen, you may also assist with other aspects of ship maintenance or operations, especially those that relate directly to the kitchen and its equipment. On a large cruise line, you may also have customer service duties such as meeting with passengers to discuss dietary restrictions.