Lalizas 70420 Man Overboard (MOB) Light and Smoke Signal With Bracket, this distress signal is designed to be mounted vertically on the ship’s bridge, with one on the port and one on the starboard side. It should be attached behind or to the side of a lifebuoy at a minimum of five meters above the water line. When the lifebuoy is thrown overboard, the MOB is pulled with it and as it leaves its bracket,
it automatically emits light and smoke to attract attention to the person in the water. On smaller vessels, it can be mounted on the wheelhouse bulkhead and launched manually.