Marine lifebuoy ring and Lifebuoy Light products are the necessary parts of marine safety equipment on ship, here below will introduce the general requirements for lifebuoy ring, lifebuoy light and related products on ships.

Lifebuoys:

Every lifebuoy shall:

1. Have an outer diameter of not more than 800mm an inner diameter of not less than 400mm.
2. Be constructed of inherently buoyant material
3. Be capable of supporting not less than 14.5kg of iron in fresh water for a period of 24 hours.
4. Have a mass of not less that 2.5kg
5. Not sustain burning or continue melting after being totally enveloped in a fire for a period of 2 seconds.
6. Be constructed to withstand a drop into the water from the height at which it is stowed above the waterline in the lightest seagoing condition or 30m, whichever is the greater, without impairing either its operating capability or that of its attached components.
7. If it is intended to operate the quick release arrangement provided for the self-activated smoke signals and self-igniting lights, have a mass sufficient to operate the quick release arrangement. And
8. Be fitted with one grabline. The grabline shall be secured at four equidistant points around the circumference of the buoy to form four equal loops.

Lifebuoy self-igniting lights

Self-igniting lights shall:

1. Be such that they cannot be extinguished by water;
2. Be of white colour and capable of either burning continuously with a luminous intensity of not less than 2cd in all directions of the upper hemisphere or flashing(discharge flashing) at a rate of not less than 50 flashes and more than 70 flashes per minute with at least the corresponding effective luminous intensity;
3. Be provided with a source of energy capable of meeting the requirement above for at least 2 hours; and
4. Be capable of withstanding the drop test requirement.

Lifebuoy self-activating smoke signals

Self-activating smoke signals shall:

1. Emit smoke of a highly visible colour at a uniform rate for a period of at least 15 min when floating in calm water.
2. Not ignite explosively or emit any flame during the entire smoke emission time of the signal;
3. Not be swamped in a seaway;
4. Continue to emit smoke when fully submerged in water fou a period of at least 10 seconds;
5. Be capable of withstanding the drop test requirement.

Buoyant lifelines

Buoyant lifelines shall:

1. Be non-kingking;
2. Have a diameter of not less than 8 mm;and
3. Have a breaking strength of not less than 5 kN.