Illustration of ancient Greek Trireme vessel, with man operating the steering oars and trierarch seated behind
Illustration of four historic ships, Roman merchant ship, ancient Greek Trireme battleship, the Mayflower (1620), and frigate HMS Pandora (1780s)
Illustration of anti-aircraft guns on 2nd World War battleship, operated by a man sitting on a swivel base
Illustration of gun sighting device mounted at the stern of 1st World War battleship, operated by three men
