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The signs on a ferry, a harbour wall, a reservoir edge and a beach. The distinction that runs through the whole family is what kind of thing a sign marks: equipment, a route, or a service. A life jacket sign says where the locker is and not to put one on; a muster station is a staffed step with a roll call rather than somewhere to stand; a lifeboat station holds a crewed boat nobody may take. Acting on the wrong reading is exactly what these signs exist to prevent, and green here means safe condition rather than permission.
A figure wearing a buoyancy collar, marking where life jackets are stowed.
A ring with four bands, marking a throwable buoyancy ring and its line.
A group of figures under an arrow, marking where to gather before evacuating a ship.
An inflatable raft with a canopy, marking where a liferaft canister is stowed.
A beacon with radiating waves, marking an emergency position-indicating radio beacon.
A figure in a full-body suit with a hood, marking immersion suit stowage.
A figure descending a rope ladder over a ship's side.
A bell or horn with radiating lines, marking the general emergency alarm.
A bag on a line, marking a throwable rescue line.
A boat on a slipway or in a house, marking a crewed rescue station ashore.
A swimming figure in a red circle with a diagonal bar.
A figure falling into water inside a yellow warning triangle.
A plain red flag flown at a beach, meaning the water is closed to bathing.
A flag divided red over yellow, marking the lifeguarded bathing area.