46 CFR §107.265

1. (a)A column stabilized unit, or surface type unit when approved by the Commandant, must be specially examined in accordance with a plan—
   1. (1)Submitted in accordance with paragraph (b) of this section; and
   2. (2)Accepted by the Commandant (CG-CVC).
2. (b)To meet the requirements in paragraph (a) of this section, the owner or operator of the unit must submit a plan to the Coast Guard that provides the methods used to determine the condition of the hull and that contains the following information:
   1. (1)The planned location where the unit is to be examined.
   2. (2)The draft at which the unit is to be examined.
   3. (3)The names of the diver or diving company selected for the examination.
   4. (4)The method of visual presentation for the examination.
   5. (5)The method used to clean the underwater portion of the hull.
   6. (6)The method and location of gauging the underwater portion of the hull.
   7. (7)The number of underwater hull fittings and number of compartments to be opened.
   8. (8)The underwater high stress areas and the welds in those areas to be examined.