Young boys in training for the Merchant Fleet at a training school in Poplar, London.
Titles read: 'SONS OF THE SEA in the making'.
M/S of a naval flag being hoisted on a ship mast. Various shots of young boys in training for the Merchant Fleet at the School of Engineering and Navigation in Poplar. We see the boys standing on rigging and doing semaphore signals, then they practise tying knots (probably on the roof of the school).
In a boiler room they learn to use machinery while others are seen doing woodwork. Some boys make propellors by carving moulds and pouring molten metal into it. Good shots of young boys in a workshop using machinery and their own propellors.
Boys in another room learn about navigation by standing around a large table and moving model ships about. Complicated navigational equipment is explained to the boys by one of their trainers.
Low angle shot of boys on the rigging on the school roof. A naval flag is lowered from the mast.