A V-Sheet is a mandatory maritime safety item, often used in Australia and other regions, designed to signal a distress or emergency situation to passing vessels or aircraft. It is a large, brightly colored sheet—typically fluorescent orange-red—featuring a large black letter "V" in the center.

Key Aspects of a V-Sheet:
Usage: It is spread over the cabin top, deck, or held out to attract attention, with the "V" indicating "Vessel in distress" or a need for assistance.

Dimensions: It is often a regulation-sized sheet measuring 1.8m x 1.2m.

Regulations: Many jurisdictions require vessels operating in open or offshore waters to carry a V-sheet as part of their safety equipment.

Material: Usually constructed from durable, high-visibility PVC or nylon, often equipped with eyelets and lanyards for securing to the boat.

Other Uses: In emergencies, it can be used for extra shade or protection from the elements.