Lifebuoy Self Activating Smoke Signal Requirements

In our previous two articles we compiled together the requirements for lifebuoys as well as the requirements for lifebuoy self igniting light. In this article we will specifically highlight the requirements and regulations for Lifebuoy Self Activating Smoke Signals which are fitted on Man Overboard Markers. So, let’s have a look at them:


  • Lifebuoy self activating smoke signal should emit smoke of highly visible colour at a uniform rate.

  • It should continue to emit smoke for the period of at least 15 minutes while floating in calm water.

  • Lifebuoy self activating smoke signal should not ignite explosively or emit any flame during entire smoke emission time of signal.

  • It should not swamp (drown or sink) in the seaway.

  • Self activating smoke signal should continue to emit smoke when submerged in water for a period of atleast 10 seconds.

  • It should be able to withstand a drop into water from the height at which it is stowed above the waterline in the lightest seagoing conditions or 30 metres whichever is greater without impairing its operating capability.

So, these are the requirements and regulations for the lifebuoy self activating smoke signals or man overboard markers. Hope this will be useful for you all.


Reference: International Convention for the Safety of Life at Sea (SOLAS)

Ankit Chauhan

Sailing on High Seas as a Merchant Naval Officer since 2011, believe in sharing the knowledge he has gained over years.

Leave a Reply

Your email address will not be published. Required fields are marked *

%d bloggers like this: