Hi Abhijit Is this whilst on a rig, platform or ship? Also depends where the vessel is registered (e.g. us, uk etc) as they will may be stipulated as to a particular type The names are really the same depending where in the world you are as you aptly wrote PFD as a typical acronym! There are generally 2 types a) a rigid type that doesn't inflate (has problems when hitting the water at height!) b) type that inflates on impact to water or gas inflation device Generally if there is a risk of falling into the water then a PFD should be worn You are not specific in your question so only general help can be given!

quote=nikam1] Thanks for your reply MB1, Its a working on Pipelaying barge. Vessele working in india but registered in Uk. I want to know whether same kind of PF device can be used while travelling offshore and working on deck with risk of falling in to water. Also can you please explain from your reply, " a) a rigid type that doesn't inflate (has problems when hitting the water at height!)" What problem rigid type have when hitting the water. The rigid type are older versions of PFD (foam block type) that are more cumbersome to work when worn and also require specific instruction in the event of jumping into the water or falling overboard! Due to the rigidity could cause more injury this way. The inflatable type which look more like a waistcoat is deemed as better for working in with less restriction and is designed to inflate on entering the water. After working abroad on similar vessels some companies save costs by using the existing life jackets that have to be there for life saving emergencies (evacuation). Being a UK registered vessel it must conform as a minimum to the UK maritime and coastguard agency: http://www.mcga.gov.uk/c...shipsregsandguidance.htm thanks again Abhijit