Dive Flag

A red flag with a white diagonal stripe (in the U.S.) that indicates divers are below the surface; other boats must keep a safe distance and reduce speed.

Related Terms

Navigation Rules

The “rules of the road” for waterways, dictating right-of-way, overtaking procedures, and collisi...

Collision Avoidance

Strategies to prevent accidents, including early course changes, clear signals, and adherence to ...

Distress Signals

Methods (flares, flags, sound-making devices, electronic signals) to alert others of an emergency...

Snorkeling from a Boat

Entering the water to snorkel near reefs or sandbars; boater education covers safe anchoring, div...

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