The main types of ships; uses of each type , the main part of a ship , general knowledge of its uses , Plimsol mark and load line ,location and benefit ,the reading of draft in feet & meters. The main types of ropes, construction , description and practical uses on board at manning ( crew of ship ), main departments, watch – keeping at sea, securing watches at ports, the main duties of every deck officer at sea and in ports, ships navigation lights, anchor, lights and shapes, navigation equipment, gyro compass, magnetic compass, radar.