Section 8301 prescribes the minimum number of licensed individuals on board certain vessels based on the vessel’s size or propulsion, length of voyage by distance or time, or any combination of these factors.

Subsection (a) applies to certain merchant and passenger carrying vessels of the United States, each of which must have a licensed master regardless of the factors listed above. Subsection (b) applies to offshore supply vessels. Subsection (c) exempts fishing or whaling vessels or yachts from these requirements.

Subsection (d) permits the Secretary to suspend any part of this chapter during a declared national emergency or to increase the number of licensed individuals required by this chapter if required for safe operation of a vessel.

2010—Subsec. (b). Pub. L. 111–281 amended subsec. (b) generally. Prior to amendment, subsec. (b) read as follows: “An offshore supply vessel on a voyage of less than 600 miles shall have a licensed mate. However, if the vessel is on a voyage of at least 600 miles, the vessel shall have 2 licensed mates. An offshore supply vessel of more than 200 gross tons as measured under section 14502 of this title, or an alternate tonnage measured under section 14302 of this title as prescribed by the Secretary under section 14104 of this title may not be operated without a licensed engineer.”

1996—Subsec. (a)(2). Pub. L. 104–324, § 729(1), inserted “as measured under section 14502 of this title, or an alternate tonnage measured under section 14302 of this title as prescribed by the Secretary under section 14104 of this title” after “1,000 gross tons”.

Subsec. (a)(3). Pub. L. 104–324, § 729(2), inserted “as measured under section 14502 of this title, or an alternate tonnage measured under section 14302 of this title as prescribed by the Secretary under section 14104 of this title” after “1,000 gross tons”.

Subsec. (a)(4). Pub. L. 104–324, § 729(3), inserted “as measured under section 14502 of this title, or an alternate tonnage measured under section 14302 of this title as prescribed by the Secretary under section 14104 of this title” after “200 gross tons”.

Subsec. (a)(5). Pub. L. 104–324, § 729(4), inserted “as measured under section 14502 of this title, or an alternate tonnage measured under section 14302 of this title as prescribed by the Secretary under section 14104 of this title” after “300 gross tons”.

Subsec. (b). Pub. L. 104–324, § 729(5), inserted “as measured under section 14502 of this title, or an alternate tonnage measured under section 14302 of this title as prescribed by the Secretary under section 14104 of this title” after “200 gross tons”.

Subsec. (e). Pub. L. 104–324, § 1104(d), amended subsec. (e) generally. Prior to amendment, subsec. (e) read as follows: “A vessel used only to respond to a discharge of oil or a hazardous substance shall have—

“(1) two licensed mates when the vessel is engaged in an operation over 12 hours in duration;

“(2) one licensed mate when the vessel is engaged in an operation less than 12 hours in duration; and

“(3) if the vessel is more than 200 gross tons, a licensed engineer when the vessel is operating.”

1993—Subsec. (e). Pub. L. 103–206 added subsec. (e).

1988—Subsec. (a)(2). Pub. L. 100–448 amended par. (2) generally. Prior to amendment, par. (2) read as follows: “A vessel of at least 1,000 gross tons and propelled by machinery shall have 3 licensed mates. However, if the vessel is on a voyage of less than 400 miles from port of departure to port of final destination, it shall have 2 licensed mates.”

1986—Subsec. (c). Pub. L. 99–640 inserted “, a mobile offshore drilling unit when on location,”.

1984—Subsec. (a). Pub. L. 98–557, § 29(c), in provisions preceding par. (1) inserted exception for the Great Lakes and substituted provisions relating to inspection under chapter 33 of this title for provisions relating to applicability of part B of this subtitle.

Subsec. (a)(1). Pub. L. 98–557, § 29(d), inserted “propelled by machinery or carrying passengers”.