WWNWS is a service inside the G.M.D.S.S system. It is about navigation safety information and provides information that mainly concern:

• Nautical perils

• Minor Lights and buoys damages

• Drifted mines

• Wire casting or other sub-marine activities

• Drills

• Ship- Aircraft firing

• Dangerous wrecks

• Constructions or works in harbors and channels

Implementation

For the purposes of WWNWS the world is divided into 19 geographical areas, termed NAVAREAS. Each one has a coordinator.

NAVAREAS have been divided into SUB AREAS and regions established by the states that belong in the NAVAREA area and are the coordinators of the notice’s transmissions in their area.