For the purpose of section 4308 of Title 46, United States Code, “other unsafe condition” means a boat:

(a) Does not display between sunset and sunrise the navigation lights prescribed by the International Regulations for Preventing Collisions at Sea, 1972 (72 COLREGS) or, when in use upon the inland waters of the United States, the Inland Navigational Rules Act of 1980 (Pub. L. 96-591), 94 Stat. 3415, 33 U.S.C. 2001, et seq.);

(b) That is operated by an individual who is apparently under the influence of alcohol or a dangerous drug, as defined in § 95.020 of this chapter, to the extent that, in the boarding officer's discretion, the continued operation of the vessel would create an unsafe condition.

(c) Has a fuel leakage from either the fuel system or engine, or has an accumulation of fuel in the bilges.

(d) Does not meet the applicable ventilation requirements for tanks and engine spaces prescribed by 46 CFR 25.40 (which applies to certain boats built before August 1, 1980), or Subpart K Ventilation, of 33 CFR Part 183 (which applies to boats built after July 31, 1980);

(e) Does not meet the requirements for backfire flame control prescribed by 46 CFR 25.35; or

(f) Designated manifestly unsafe for a specific voyage on a specific body of water due to:

(1) Unsuitable design or configuration, or

(2) Improper construction or inadequate material condition, or

(3) Improper or inadequate operational or safety equipment, and set forth in an order issued by a District Commander according to the provisions of § 177.04.