What are the requirements of Buoyant Smoke Signal (orange smoke signal)as per SOLAS?

Smoke signal:  2  pieces for each lifeboat and life raft
According to Chapter III Visual Signals, 3.3 Buoyant Smoke Signal of the LSA Code

The buoyant smoke signal shall:

  • be contained in a water-resistant casing;
  • not ignite explosively when used in accordance with the manufacturer’s operating instructions
  • have brief instructions or diagrams clearly illustrating the use of the buoyant smoke signal printed on its casing.
  • emit smoke of a highly visible colour at a uniform rate for a period of not less than 3 min when floating in calm water;
  • not emit any flame during the entire smoke emission time;
  • not be swamped in a seaway;
  • Continue to emit smoke when submerged in water for a period of 10 s under 100 mm of water.