Section R. 281.3103 - Drydock inspectionRule 103.
(1) All vessels carrying passengers for hire shall pass an initial drydock inspection conducted by a marine inspector. Thereafter, a vessel shall pass a drydock inspection when the department has reasonable cause to believe it necessary or at intervals not to exceed 60 months.(2) Before an inspection, the owner of a vessel shall remove or effectively store all associated equipment, including fishing gear, coolers, and personal belongings onboard the vessel, which will impede the inspection process.(3) The owner of a vessel shall open or remove all hatches and inspection ports before or during an inspection and shall have the vessel in a reasonably clean and orderly condition.(4) To determine that a vessel is seaworthy and in good and serviceable condition, the owner of a vessel shall permit the marine inspector to inspect the entire interior and exterior of the vessel, including all of the following: (a) The hull and appendages.(f) Through-hull fittings.(j) Outboard lower units.(5) When the marine inspector has reasonable cause to believe that the seaworthiness or the sound structure of the vessel may be impaired, the owner of the vessel may be required to remove sections or portions of the lining, decking, ceiling, or other obstructions that may obscure any part of the vessel so that the seaworthiness or sound structure may be determined.(6) When through-hull fittings are present below the waterline they shall be fitted with a readily accessible shutoff valve. The shutoff valve shall be located as close to the through-hull fitting as possible and be in good and serviceable condition. This subrule shall not be construed to conflict with Act No. 167 of the Public Acts of 1970, as amended, being S323.331 et seq. of the Michigan Compiled Laws, and known as the watercraft pollution control act of 1970.Mich. Admin. Code R. 281.3103