Motorboat "Maple V" is given a trial run in Cowes, Isle of Wight.
Item title reads (missing)- Motorboat with 18,000 horse power, testing the "Maple V". One of Britain's entries for International contest. Cowes, Isle of Wight.
Various shots of the motorboat speeding along past the camera. M/S of a yacht on the choppy sea, the camera follows it for a while. M/S of the "Maple V" again. M/S of more yachts listing in the sea. M/S of yachts filmed through a lifebelt. L/S of the sea and the motorboat cutting through it. Various shots as it goes slowly then picks up speed. M/S from above of the motor. M/S as it sails slowly along, M/S profile as it picks up speed. M/S as it sails past a boat. M/S of five men on board. M/S as engineers examine it after the trials.