Section 195.30-1 - Application(a) This subpart, except § 195.30-90 , applies to each vessel that is contracted for on or after November 23, 1992, and is equipped with any refrigeration unit using-(1) Ammonia to refrigerate any space with a volume of more than 20 cubic feet; or(2) Fluorocarbons to refrigerate any space with a volume of more than 1000 cubic feet.(b) Each vessel that is contracted for before November 23, 1992, must satisfy § 195.30-90 if it is equipped with any refrigeration unit using-(1) Ammonia to refrigerate any space with a volume of more than 20 cubic feet, or(2) Fluorocarbons to refrigerate any space with a volume of more than 1000 cubic feet.