33 CFR §183.510

1. (a)Each fuel tank in a boat must have been tested by its manufacturer under § 183.580 and not leak when subjected to the pressure marked on the tank label under § 183.514(b)(5).
2. (b)Each fuel tank must not leak if subjected to the fire test under § 183.590. Leakage is determined by the static pressure test under § 183.580, except that the test pressure must be at least one-fourth PSIG.
3. (c)Each fuel tank of less than 25 gallons capacity must not leak if tested under § 183.584.
4. (d)Each fuel tank with a capacity of 25 to 199 gallons must not leak if tested under § 183.586.
5. (e)Each fuel tank of 200 gallons capacity or more must not leak if tested under §§ 183.586 and 183.588.