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A figure in a full-body suit with a hood, marking immersion suit stowage.
Also known as: Survival suit symbol, Exposure suit sign, Thermal protective aid symbol
The immersion suit symbol shows a figure in a one-piece suit covering the whole body including the hood, feet and hands, and marks where immersion suits are stowed. Its point is thermal rather than buoyant: in cold water an unprotected person loses the use of their hands within minutes and consciousness long before drowning becomes the danger. The suit is carried on ships operating in cold waters and is a separate item from the life jacket, not a substitute for it.
Marks equipment whose purpose is thermal rather than buoyant: in cold water the loss of hand function and then of consciousness arrives long before drowning does, and the suit is what delays it.
Contexts: Public information, Navigation
Marks a separate item from the life jacket rather than a replacement for it, which is why the two signs are mounted together on ships that carry both.
Contexts: Public information, Navigation
A standing figure drawn as a single continuous outline enclosing the head, arms, hands and feet, with a hood shown as a curve over the head.
Both are IMO life-saving appliance signs.