Can anybody see me?

Abstract

A major report on surface marker aids for divers has been carried out for the Health & Safety Executive by Heriot-Watt University. Alister Wallbank explains how his team came up with its findings - and why yellow is the colour if you want to be conspicuous at sea. Reprinted, with some editing, by kind permission of the Editor, the author and the Health and Safety Executive, from DIVER 2000; 45 (2) February: 72-74