compartments and comply with the all requirements for ordinary lifejacket, and shall:
inflate automatically on immersion, be provided with a device to permit inflation by a single
manual motion and be capable of being inflated by mouth;
in the event of loss of buoyancy in any one compartment be capable of complying with the all
requirements for ordinary lifejacket;
shall have buoyancy which is not reduced by more than 5% after 24h submersion in fresh
water after inflation by means of the automatic mechanism.