| HYDROFOIL | Device on a seaplane to aid take-off (9) |
| SPONSON | Word for a projection on a boat or a subsidiary wing on a seaplane serving to aid its stability; or, a type of gun platform on a warship (7) |
| HYDROSKI | Aspiration to do risky manoeuvre on a seaplane |
| LANDINGGEAR | Floats on a seaplane, e.g. |
| ESPLANADE | Flying seaplane initially disrupts seaside walk (9) |
| PONTOON | A flat-bottomed boat or structure serving as a buoyant support for a temporary floating bridge or landing stage; a float of a seaplane; or, the game blackjack or vingt-et-un (7) |
| SCHNEIDER | Prize for a race between seaplanes and flying boats won outright by the UK in 1931 (9,6) |
| HANDBRAKE | Parking device on a car (9) |
| HANDLEBAR | Steering device on a bicycle (9) |
| AUTOFOCUS | Self-adjusting device on a slide projector (9) |
| ECCENTRIC | Device on a revolving shaft (9) |
| SELFTIMER | Device on a camera that gives a delay between pressing the shutter release and the shutter's firing (4-5) |
| SOFTPEDAL | Device on a piano that causes the hammer to strike only one string (una corda) (4,5) |
| PROPELLER | Revolving device on a motorboat that helps move it through the water |
| ISLE | Landing place for a seaplane |
| ENCAPSULATE | Cut seaplane components to put in a shortened form |
| SEAN | Leap off the seaplane with the first 007 (4) |
| ELEPHANTSEAL | The seaplane's designed to carry large marine creature (8,4) |
| HOPS | Informal dances; jumps made on one foot or by a frog; or, short trips in chartered jets, seaplanes etc (4) |
| TROPHY | Prize for a race between seaplanes and flying boats won outright by the UK in 1931 (9,6) |
