; (2) at least one readily accessible life preserver or other lifesaving device for each individual on board; (3) an efficient flame arrestor, backfire trap, or other similar device on the carburetors of each inboard engine that uses gasoline as fuel; (4) the means to properly and efficiently ventilate enclosed spaces, including engine and fuel tank compartments, so as to remove explosive or flammable gases; (5) visual distress signals; (6) other equipment required to minimize the risk of injury to the crew during vessel operations, if the Secretary determines that a risk of serious injury exists that can be eliminated or mitigated by that equipment; and (7) a placard as required by regulations prescribed under section 10603(b). (b) Subject vessels In addition to the requirements of subsection (a), the Secretary shall prescribe regulations requiring that subject vessels install, maintain, and use the following equipment: (1) Alerting and locating equipment, including emergency position indicating radio beacons. (2) (A) Subject to subparagraph (B), a survival craft that— (i) ensures that no part of an individual is immersed in water; and (ii) is sufficient to accommodate all individuals on board. (B) Except for a nonapplicable vessel, an auxiliary craft shall satisfy the equipment requirement under paragraph (2)(B) if such craft is— (i) necessary for normal fishing operations; (ii) readily accessible during an emergency