Does the requirement for Safe Swim Defense and Safety Afloat training apply to all members of the crew, or just the advisors?
The rules come right out of the BSA Guide to Safe Scouting, and apply to the advisors. The Aquatics Safety section states a minimum of one adult leader must complete Safe Swim Defense training, carry the card and agree to use the defenses. Safety Afloat states that before a scout group may engage in a trip on the water, adult leaders must complete Safety Afloat training, carry the card and be dedicated to full compliance of the points for safety. As with all training, exceeding the minimum number of trained participants is strongly recommended.