Marine Water Safety Sign: Caution Water Depth _______m (Specify depth)

ISO 20712-1:2008 and Addendum to ISO 20712-1 introduced in October 2009 gives guidance on a range of water safety signs based on designs produced by The National Water Safety Committee. Signs should be used in areas where water-based sports or other activities take place to warn of possible hazards or situations where care should be taken.