gearbox

Inexperienced drivers can "wreck a gearbox and a clutch", Ms Howe said, adding that nerves may cause them to stall or cut out the engine.

Teams get penalised for more than the allocated engine or gearbox replacements.

He now works on the team that maintain the gearboxes for the helicopters flown by the Royal Navy and RAF.

Upon the ship's return to Scotland in September, a gearbox and propeller fault were detected, and further investigation at Dale's Marine in Greenock revealed the rear of the ship was twisted.

Stroll, though, took no further part in the session because of rear suspension damage and the need to change his gearbox.