A captain job involves typically involves the command of a boat, ship, or airplane. A captain ensures the safety of all personnel and equipment, as well as the smooth operation of any tasks. Their responsibilities include managing and supervising crew members, handling paperwork, understanding national and international laws of open water or air, hiring employees, maintaining permits and licenses, keeping detailed logs, and organizing the sale of any fish if they are captaining a fishing boat. The use of various tools such as maps and modern technology is required. Alternatively, a job captain works on architectural or building projects, ensuring completion of each project on time and within budget.