What is Fire-protected lifeboat?

A fire-protected lifeboat when waterborne shall be capable of protecting the number of persons it is permitted to accommodate when subjected to a continuous oil fire that envelops the lifeboat for a period of not less than 8 minutes. (LSA 4.9)

In case a water spray system for the protection of the surface of the lifeboat above waterline is provided. 

manish-mayank