§ 2101. General definitions

9,265 words·~42 min read·/usc/title-46/section-2101

A research copy — for the controlling text, always check the official state or federal source. Not legal advice.

In this subtitle—

(1)“associated equipment”—

(A)means—

(i)a system, accessory, component, or appurtenance of a recreational vessel; or

(ii)a marine safety article intended for use on board a recreational vessel; but

(B)with the exception of emergency locator beacons for recreational vessels operating beyond 3 nautical miles from the baselines from which the territorial sea of the United States is measured or beyond 3 nautical miles from the coastline of the Great Lakes, does not include radio equipment.

(2)“Coast Guard” means the organization established and continued under section 101 of title 14.

(3)“Commandant” means the Commandant of the Coast Guard.

(4)“commercial service” includes any type of trade or business involving the transportation of goods or individuals, except service performed by a combatant vessel.

(5)“consideration” means an economic benefit, inducement, right, or profit including pecuniary payment accruing to an individual, person, or entity, but not including a voluntary sharing of the actual expenses of the voyage, by monetary contribution or donation of fuel, food, beverage, or other supplies.

(6)“crude oil” means a liquid hydrocarbon mixture occurring naturally in the earth, whether or not treated to render it suitable for transportation, and includes crude oil from which certain distillate fractions may have been removed, and crude oil to which certain distillate fractions may have been added.

(7)“crude oil tanker” means a tanker engaged in the trade of carrying crude oil.

(8)“dangerous drug” means a narcotic drug, a controlled substance, or a controlled substance analog (as defined in section 102 of the Comprehensive Drug Abuse Prevention and Control Act of 1970 (21 U.S.C. 802)).

(9)“discharge”, when referring to a substance discharged from a vessel, includes spilling, leaking, pumping, pouring, emitting, emptying, or dumping, however caused.

(10)“ferry” means a vessel that is used on a regular schedule—

(A)to provide transportation only between places that are not more than 300 miles apart; and

(B)to transport only—

(i)passengers; or

(ii)vehicles, or railroad cars, that are being used, or have been used, in transporting passengers or goods.

(11)“fish” means finfish, mollusks, crustaceans, and all other forms of marine animal and plant life, except marine mammals and birds.

(12)“fishing vessel” means a vessel that commercially engages in the catching, taking, or harvesting of fish or an activity that can reasonably be expected to result in the catching, taking, or harvesting of fish.

(13)“fish processing vessel” means a vessel that commercially prepares fish or fish products other than by gutting, decapitating, gilling, skinning, shucking, icing, freezing, or brine chilling.

(14)“fish tender vessel” means a vessel that commercially supplies, stores, refrigerates, or transports fish, fish products, or materials directly related to fishing or the preparation of fish to or from a fishing, fish processing, or fish tender vessel or a fish processing facility.

(15)“freight vessel” means a motor vessel of more than 15 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 that carries freight for hire, except an oceanographic research vessel or an offshore supply vessel.

(16)“Great Lakes barge” means a non-self-propelled vessel of at least 3,500 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 operating on the Great Lakes.

(17)“hazardous material” means a liquid material or substance that is—

(A)flammable or combustible;

(B)designated a hazardous substance under section 311(b) of the Federal Water Pollution Control Act (33 U.S.C. 1321); or

(C)designated a hazardous material under section 5103(a) of title 49.

(18)“major conversion” means a conversion of a vessel that—

(A)substantially changes the dimensions or carrying capacity of the vessel;

(B)changes the type of the vessel;

(C)substantially prolongs the life of the vessel; or

(D)otherwise so changes the vessel that it is essentially a new vessel, as decided by the Secretary.

(19)“marine environment” means—

(A)the navigable waters of the United States and the land and resources in and under those waters;

(B)the waters and fishery resources of an area over which the United States asserts exclusive fishery management authority;

(C)the seabed and subsoil of the outer Continental Shelf of the United States, the resources of the Shelf, and the waters superjacent to the Shelf; and

(D)the recreational, economic, and scenic values of the waters and resources referred to in subclauses (A)–(C) of this clause.

(20)“merchant mariner credential” means a merchant mariner license, certificate, or document that the Secretary is authorized to issue pursuant to this title.

(21)“mobile offshore drilling unit” means a vessel capable of engaging in drilling operations for the exploration or exploitation of subsea resources.

(22)“motor vessel” means a vessel propelled by machinery other than steam.

(23)“nautical school program” means a program that—

(A)offers a comprehensive program of training that includes substantial sea service on nautical school vessels or merchant vessels of the United States primarily to train individuals for service in the merchant marine; and

(B)is approved by the Secretary for purposes of section 7315, in accordance with regulations promulgated by the Secretary.

(24)“nautical school vessel” means a vessel operated by or in connection with a nautical school or an educational institution under section 558 of title 40.

(25)“navigable waters of the United States” includes all waters of the territorial sea of the United States as described in Presidential Proclamation No. 5928 of December 27, 1988.

(26)“oceanographic research vessel” means a vessel that the Secretary finds is being employed only in instruction in oceanography or limnology, or both, or only in oceanographic or limnological research, including studies about the sea such as seismic, gravity meter, and magnetic exploration and other marine geophysical or geological surveys, atmospheric research, and biological research.

(27)“offshore supply vessel” means a motor vessel that regularly carries goods, supplies, individuals in addition to the crew, or equipment in support of exploration, exploitation, or production of offshore mineral or energy resources.

(28)“oil” includes oil of any type or in any form, including petroleum, fuel oil, sludge, oil refuse, and oil mixed with wastes except dredged spoil.

(29)“oil spill response vessel” means a vessel that is designated in its certificate of inspection as such a vessel, or that is adapted to respond to a discharge of oil or a hazardous material.

(30)“overall in length” means—

(A)for a foreign vessel or a vessel engaged on a foreign voyage, the greater of—

(i)96 percent of the length on a waterline at 85 percent of the least molded depth measured from the top of the keel (or on a vessel designed with a rake of keel, on a waterline parallel to the designed waterline); or

(ii)the length from the fore side of the stem to the axis of the rudder stock on that waterline; and

(B)for any other vessel, the horizontal distance of the hull between the foremost part of the stem and the aftermost part of the stern, excluding fittings and attachments.

(31)“passenger”—

(A)means an individual carried on the vessel except—

(i)the owner or an individual representative of the owner or, in the case of a vessel under charter, an individual charterer or individual representative of the charterer;

(ii)the master; or

(iii)a member of the crew engaged in the business of the vessel who has not contributed consideration for carriage and who is paid for on board services;

(B)on an offshore supply vessel, means an individual carried on the vessel except—

(i)an individual included in clause (i), (ii), or

(iii)of subparagraph

(A)of this paragraph;

(ii)an employee of the owner, or of a subcontractor to the owner, engaged in the business of the owner;

(iii)an employee of the charterer, or of a subcontractor to the charterer, engaged in the business of the charterer; or

(iv)an individual employed in a phase of exploration, exploitation, or production of offshore mineral or energy resources served by the vessel;

(C)on a fishing vessel, fish processing vessel, or fish tender vessel, means an individual carried on the vessel except—

(i)an individual included in clause (i), (ii), or

(iii)of subparagraph

(A)of this paragraph;

(ii)a managing operator;

(iii)an employee of the owner, or of a subcontractor to the owner, engaged in the business of the owner;

(iv)an employee of the charterer, or of a subcontractor to the charterer, engaged in the business of the charterer; or

(v)an observer or sea sampler on board the vessel pursuant to a requirement of State or Federal law; or

(D)on a sailing school vessel, means an individual carried on the vessel except—

(i)an individual included in clause (i), (ii), or

(iii)of subparagraph

(A)of this paragraph;

(ii)an employee of the owner of the vessel engaged in the business of the owner, except when the vessel is operating under a demise charter;

(iii)an employee of the demise charterer of the vessel engaged in the business of the demise charterer; or

(iv)a sailing school instructor or sailing school student.

(32)“passenger for hire” means a passenger for whom consideration is contributed as a condition of carriage on the vessel, whether directly or indirectly flowing to the owner, charterer, operator, agent, or any other person having an interest in the vessel.

(33)“passenger vessel” means a vessel of at least 100 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—

(A)carrying more than 12 passengers, including at least one passenger for hire;

(B)that is chartered and carrying more than 12 passengers;

(C)that is a submersible vessel carrying at least one passenger for hire; or

(D)that is a ferry carrying a passenger.

(34)“product carrier” means a tanker engaged in the trade of carrying oil except crude oil.

(35)“public vessel” means a vessel that—

(A)is owned, or demise chartered, and operated by the United States Government or a government of a foreign country; and

(B)is not engaged in commercial service.

(36)“recreational vessel” means a vessel—

(A)being manufactured or operated primarily for pleasure; or

(B)leased, rented, or chartered to another for the latter’s pleasure.

(37)“recreational vessel manufacturer” means a person engaged in the manufacturing, construction, assembly, or importation of recreational vessels, components, or associated equipment.

(38)“riding gang member” means an individual who—

(A)has not been issued a merchant mariner document under chapter 73;

(B)does not perform—

(i)watchstanding, automated engine room duty watch, or personnel safety functions; or

(ii)cargo handling functions, including any activity relating to the loading or unloading of cargo, the operation of cargo-related equipment (whether or not integral to the vessel), and the handling of mooring lines on the dock when the vessel is made fast or let go;

(C)does not serve as part of the crew complement required under section 8101;

(D)is not a member of the steward’s department; and

(E)is not a citizen or temporary or permanent resident of a country designated by the United States as a sponsor of terrorism or any other country that the Secretary, in consultation with the Secretary of State and the heads of other appropriate United States agencies, determines to be a security threat to the United States.

(39)“sailing instruction” means teaching, research, and practical experience in operating vessels propelled primarily by sail and may include—

(A)any subject related to that operation and to the sea, including seamanship, navigation, oceanography, other nautical and marine sciences, and maritime history and literature; and

(B)only when in conjunction with a subject referred to in subclause

(A)of this clause, instruction in mathematics and language arts skills to sailing school students having learning disabilities.

(40)“sailing school instructor” means an individual who is on board a sailing school vessel to provide sailing instruction, but does not include an operator or crewmember who is among those required to be on board the vessel to meet a requirement established under part F of this subtitle.

(41)“sailing school student” means an individual who is on board a sailing school vessel to receive sailing instruction.

(42)“sailing school vessel” means a vessel—

(A)that is less than 500 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;

(B)carrying more than 6 individuals who are sailing school instructors or sailing school students;

(C)principally equipped for propulsion by sail, even if the vessel has an auxiliary means of propulsion; and

(D)owned or demise chartered, and operated by an organization described in section 501(c)(3) of the Internal Revenue Code of 1986 (26 U.S.C. 501(c)(3)) and exempt from tax under section 501(a) of that Code, or by a State or political subdivision of a State, during times that the vessel is operated by the organization, State, or political subdivision only for sailing instruction.

(A)Subject to subparagraph (B), “scientific personnel” means individuals on board an oceanographic research vessel only to engage in scientific research, or to instruct or receive instruction in oceanography or limnology.

(i)Such term includes an individual who is on board an oceanographic research vessel only to—

(I)engage in scientific research;

(II)instruct in oceanography or limnology; or

(III)receive instruction in oceanography or limnology.

(ii)For purposes of clause (i), the age of an individual may not be considered in determining whether the individual is described in such clause.

(44)“seagoing barge” means a non-self-propelled vessel of at least 100 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 making voyages beyond the Boundary Line.

(45)“seagoing motor vessel” means a motor vessel of at least 300 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 making voyages beyond the Boundary Line.

(46)“Secretary” means the Secretary of the department in which the Coast Guard is operating.

(47)“sexual assault” means any form of abuse or contact as defined in chapter 109A of title 18, or a substantially similar offense under State, local, or Tribal law.

(48)“sexual harassment” means—

(A)conduct that—

(i)involves unwelcome sexual advances, requests for sexual favors, or deliberate or repeated offensive comments or gestures of a sexual nature if any—

(I)submission to such conduct is made either explicitly or implicitly a term or condition of employment, pay, career, benefits, or entitlements of the individual;

(II)submission to, or rejection, of such conduct by an individual is used as a basis for decisions affecting that individual’s job, pay, career, benefits, or entitlements;

(III)such conduct has the purpose or effect of unreasonably interfering with an individual’s work performance or creates an intimidating, hostile, or offensive work environment; or

(IV)conduct may have been by an individual’s supervisor, a supervisor in another area, a co-worker, or another credentialed mariner; and

(ii)is so severe or pervasive that a reasonable person would perceive, and the victim does perceive, the environment as hostile or offensive;

(B)any use or condonation associated with first-hand or personal knowledge, by any individual in a supervisory or command position, of any form of sexual behavior to control, influence, or affect the career, pay, benefits, entitlements, or employment of a subordinate; or

(C)any intentional or repeated unwelcome verbal comment or gesture of a sexual nature towards or about an individual by the individual’s supervisor, a supervisor in another area, a coworker, or another credentialed mariner.

(49)“small passenger vessel” means a wing-in-ground craft, regardless of tonnage, carrying at least one passenger for hire, and a vessel of less than 100 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—

(A)carrying more than 6 passengers, including at least one passenger for hire;

(B)that is chartered with the crew provided or specified by the owner or the owner’s representative and carrying more than 6 passengers;

(C)that is chartered with no crew provided or specified by the owner or the owner’s representative and carrying more than 12 passengers;

(D)that is a submersible vessel carrying at least one passenger for hire; or

(E)that is a ferry carrying more than 6 passengers.

(50)“steam vessel” means a vessel propelled in whole or in part by steam, except a recreational vessel of not more than 40 feet in length.

(51)“submersible vessel” means a vessel that is capable of operating below the surface of the water.

(52)“tanker” means a self-propelled tank vessel constructed or adapted primarily to carry oil or hazardous material in bulk in the cargo spaces.

(53)“tank vessel” means a vessel that is constructed or adapted to carry, or that carries, oil or hazardous material in bulk as cargo or cargo residue, and that—

(A)is a vessel of the United States;

(B)operates on the navigable waters of the United States; or

(C)transfers oil or hazardous material in a port or place subject to the jurisdiction of the United States.

(54)“towing vessel” means a commercial vessel engaged in or intending to engage in the service of pulling, pushing, or hauling along side, or any combination of pulling, pushing, or hauling along side.

(55)“uninspected passenger vessel” means an uninspected vessel—

(A)of at least 100 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—

(i)carrying not more than 12 passengers, including at least one passenger for hire; or

(ii)that is chartered with the crew provided or specified by the owner or the owner’s representative and carrying not more than 12 passengers; and

(B)of less than 100 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—

(i)carrying not more than 6 passengers, including at least one passenger for hire; or

(ii)that is chartered with the crew provided or specified by the owner or the owner’s representative and carrying not more than 6 passengers.

(56)“uninspected vessel” means a vessel not subject to inspection under section 3301 of this title that is not a recreational vessel.

(57)“vessel of war” means a vessel—

(A)belonging to the armed forces of a country;

(B)bearing the external marks distinguishing vessels of war of that country;

(C)under the command of an officer commissioned by the government of that country and whose name appears in the appropriate service list or its equivalent; and

(D)staffed by a crew under regular armed forces discipline.

(58)“wing-in-ground craft” means a vessel that is capable of operating completely above the surface of the water on a dynamic air cushion created by aerodynamic lift due to the ground effect between the vessel and the water’s surface.

(Pub. L. 98–89, Aug. 26, 1983, 97 Stat. 501; Pub. L. 98–364, title IV, § 402(1), July 17, 1984, 98 Stat. 445; Pub. L. 98–454, title III, § 301(a), Oct. 5, 1984, 98 Stat. 1734; Pub. L. 98–557, § 34(a), Oct. 30, 1984, 98 Stat. 2876; Pub. L. 99–307, § 1(1), (2), May 19, 1986, 100 Stat. 444; Pub. L. 99–509, title V, § 5102(b)(1), Oct. 21, 1986, 100 Stat. 1926; Pub. L. 99–514, § 2, Oct. 22, 1986, 100 Stat. 2095; Pub. L. 99–640, §§ 10(b)(1), 11(a), 13(d), Nov. 10, 1986, 100 Stat. 3549–3551;

Pub. L. 100–239, § 6(a)(1), Jan. 11, 1988, 101 Stat. 1781; Pub. L. 100–424, § 8(c)(1), Sept. 9, 1988, 102 Stat. 1593; Pub. L. 100–710, title I, § 104(a)(1), (2), Nov. 23, 1988, 102 Stat. 4749; Pub. L. 101–225, title II, § 209, Dec. 12, 1989, 103 Stat. 1913; Pub. L. 101–380, title IV, § 4103(a)(2)(A), Aug. 18, 1990, 104 Stat. 511; Pub. L. 101–595, title VI, § 603(1), Nov. 16, 1990, 104 Stat. 2993; Pub. L. 102–587, title V, § 5208(a), Nov. 4, 1992, 106 Stat. 5075; Pub. L. 103–206, title V, §§ 502–510, Dec. 20, 1993, 107 Stat. 2439–2441;

Pub. L. 103–272, § 5(l), July 5, 1994, 108 Stat. 1375; Pub. L. 104–324, title VII, § 709, title XI, § 1104(a), Oct. 19, 1996, 110 Stat. 3934, 3966; Pub. L. 105–383, title III, § 301(b)(1), Nov. 13, 1998, 112 Stat. 3417; Pub. L. 107–217, § 3(m)(1), Aug. 21, 2002, 116 Stat. 1302; Pub. L. 107–295, title IV, § 419, Nov. 25, 2002, 116 Stat. 2124; Pub. L. 109–241, title III, §§ 301, 312(b), July 11, 2006, 120 Stat. 526, 533; Pub. L. 109–304, § 15(2), Oct. 6, 2006, 120 Stat. 1702; Pub. L. 111–281, title VI, §§ 617(a)(1)(A), 618, Oct. 15, 2010, 124 Stat. 2972, 2975;

Pub. L. 111–330, § 1(9), Dec. 22, 2010, 124 Stat. 3570; Pub. L. 115–232, div. C, title XXXV, § 3541(a)(1), Aug. 13, 2018, 132 Stat. 2322; Pub. L. 115–282, title V, § 515, Dec. 4, 2018, 132 Stat. 4279; Pub. L. 117–263, div. K, title CXVI, § 11601(a), Dec. 23, 2022, 136 Stat. 4145; Pub. L. 119–60, div. G, title LXXIII, § 7301(a), (k)(1)(A), title LXXVII, § 7701(f)(1), Dec. 18, 2025, 139 Stat. 1751, 1759, 1835.)

Historical and Revision Notes

A number of definitions are provided because of the need to define jurisdictional and applicability limits of various sections to the many types and classes of vessels.

Section 2101(1) defines the type of “associated equipment” that is involved in the use of recreational boats that are subject to Federal regulatory authority. This equipment is subject to a number of controls under federally established construction and performance standards. Radio equipment is exempt from these regulatory controls, since this equipment continues to be regulated by the Federal Communications Commission.

Section 2101(2) defines “barge” as a vessel that is non-self-propelled and that is often pushed ahead, towed alongside, or towed astern on a hawser by a towing vessel. It does not include a vessel that is propelled by sail only.

Section 2101(3) defines “boundary line” for the establishment of jurisdictional parameters for various maritime safety laws. Public Law 96–324, codified at 33 U.S.C. 151, permits the Secretary to establish appropriate identifiable lines dividing inland waters of the U.S. from the high seas for the purpose of determining the applicability of these laws. These laws will now be included within subtitle II of title 46—Shipping. These lines may not be located more than twelve nautical miles seaward of the baseline from which the territorial sea is measured and may differ in position for the purposes of different parts or sections of subtitle II.

Section 2101(4) defines “Coast Guard”.

Section 2101(5) provides that wherever the term “commercial service” is used it is to include all vessels except those that are primarily used for combatant purposes. This is to make sure that vessels that are engaged in the transportation of goods or individuals are subject to the applicable maritime and environmental safety laws, even if they are sovereign controlled vessels.

Section 2101(6) defines “consular officer” as one who has authority to issue visas. Traditionally this person is knowledgeable and familiar with the maritime safety and seamen’s welfare laws.

Section 2101(7) defines “crude oil” because certain equipment requirements like inert gas systems, segregated ballast tanks, crude oil washing systems or special ballast arrangements are applicable only to tank vessels that carry crude oil. Crude oil is still included within the definition of “hazardous material” and “oil”.

Section 2101(8) defines a “crude oil tanker” as one engaged in carrying crude oil. The definition does not include a tank barge since a tanker is defined as a self-propelled tank vessel. See also 2101(38).

Section 2101(9) makes it clear that the term “discharge” when referring to a substance that emanates from a vessel and is related to the marine environmental laws concerning pollution by oil or hazardous substances.

Section 2101(10) defines a “documented vessel” as any vessel of the United States that has been issued a certificate of documentation that might include a register, enrollment, license, or enrollment and license for various trades.

Section 2101(11) lists what is included in the term “fisheries” for the purpose of documentation of vessels and is intended to be all-inclusive of the numerous types of fishing activities.

Section 2101(12) defines “foreign vessel” as any foreign flag or foreign operated vessel that is operated under the jurisdiction or authority of a government other than the United States.

Section 2101(13) defines a “freight vessel” as a motor vessel or any vessel propelled by diesel or other internal combustion engines and that carries freight for hire.

Section 2101(14) defines “hazardous materials” as a broad range of materials that are not only flammable or combustible but are also designated under related maritime safety and environmental laws.

Section 2101(15) defines “marine environment” as an all-inclusive term that was developed to cover land and water areas that could be affected by pollution from all vessels and not only tank vessels.

Section 2101(16) defines “motor vessel” as a vessel propelled by machinery other than steam to make it clear that these vessels are not steam vessels.

Section 2101(17) defines “nautical school vessel” as a vessel that can be a privately owned and operated as well as a publicly owned and operated school vessel.

Section 2101(18) defines “oceanographic research vessel” as a vessel employed in oceanography or limnology research or instruction. It is defined because this type of vessel, while not inspected and certified as such, is subject to a number of special statutory and regulatory requirements.

Section 2101(19) defines “offshore supply vessel” as a class of vessel that is limited by tonnage and its employment in the mineral and oil industry and while so employed it is not a small passenger vessel.

Section 2101(20) defines “oil” to include oil of any type, in any form, or in any mixture. This is the definition that originated with marine environment and pollution laws and continues the definition that was adopted by port and tanker safety laws.

Section 2101(21) defines the term “passengers” in relation to various types of vessels. Due to the complexity of existing laws with respect to the definitions of “passenger” on various categories of vessels and the need to not make any changes of a substantive nature that could be construed as controversial, four definitions of “passenger” have been included.

Section 2101(22) defines “passenger vessel” as one that is at least 100 gross tons and carries at least one passenger for hire.

Section 2101(23) defines “product carrier” as a tanker that is engaged in carrying oil. This definition when read with the definition of tanker means that it is a self-propelled vessel. A tank barge carrying oil products is a tank vessel but is not subject to the special standards or requirements for a product carrier.

Section 2101(24) defines a “public vessel” as a governmental vessel that is not in commercial service. It should be noted that a sovereign-controlled foreign-flag vessel that is engaged in commercial service is not a public vessel and is subject to maritime safety and environment laws.

Section 2101(25) defines a “recreational vessel” as a class of vessel whose primary purpose is for pleasure. These vessels while not subject to inspection are subject to certain requirements of law to improve boating safety.

Section 2101(26) defines a “recreational vessel manufacturer” as one that is involved with not only the recreational vessels themselves but also with their components or associated equipment.

Section 2101(27), (28), (29), and

(30)provides a number of definitions that define the type of instruction, instructor, student, and vessel that is involved in the teaching of sailing.

Section 2101(31) defines “scientific personnel” as individuals engaged in oceanography or limnology because they are specially treated under various maritime safety requirements.

Section 2101(32) defines a “seagoing barge” as a vessel that is at least 100 gross tons making voyages to sea beyond the boundary line.

Section 2101(33) defines a “seagoing motor vessel” as a vessel that must be a motor vessel, as defined in 2101(15), of at least 300 gross tons making voyages to sea beyond the boundary line.

Section 2101(34) defines “Secretary” so that maritime safety and seamen’s welfare jurisdiction remains within the Coast Guard at all times.

Section 2101(35) defines “small passenger vessel” as one that is less than 100 gross tons carrying more than six passengers as defined in section 2101(21).

Section 2101(36) defines “State” as a State, territory or possession of the United States and is used to establish jurisdictional limits for the application of the various maritime safety and environmental safety laws of this subtitle. This definition is further limited by definitions in section 2102 that relate to recreational boating safety and facility improvement programs.

Section 2101(37) defines a “steam vessel” as a vessel propelled by steam. However, steam vessels of not more than 40 feet that are used exclusively for pleasure are not included.

Section 2101(38) defines “tanker” as a self-propelled tank vessel that has been constructed or primarily adapted to carry oil or hazardous material in bulk in the cargo spaces. This vessel is a subclass of tank vessel, which is defined in section 2101(39). This subclass definition is necessary because certain statutory minimum requirements that are consistent with internationally accepted standards are solely applicable to these vessels.

Section 2101(39) defines a “tank vessel” as a vessel carrying oil or hazardous materials in bulk or residue including a tanker as defined in section 2101(38).

Section 2101(40) defines “towing vessel” as a vessel in commercial service that pushes, pulls, or tows alongside and includes what is traditionally known as a tug.

Section 2101(41) defines “undocumented” which, in part, facilitates the classification of vessels that may be numbered by the proper issuing authority in a State.

Section 2101(42) defines an “uninspected passenger vessel” as a vessel carrying six or less passengers.

Section 2101(43) defines an “uninspected vessel” as a vessel not subject to inspection and certification by the Coast Guard under section 3301. Recreational vessels and inland towing vessels are typical uninspected vessels.

Section 2101(44) defines “United States” to establish geographical boundaries for the applicability of the various maritime safety and environmental safety laws of this subtitle. This definition is further limited by definitions in section 2102 that relate to recreational boating safety and facility improvement programs.

Section 2101(45) makes it clear that “vessel” as used in this subtitle has the same meaning as is provided in section 3 of title 1, of the U.S.C.

Section 2101(46) defines “vessel of the United States” as a vessel that is documented or numbered under the laws of the United States. A documented vessel and those vessels that are numbered by a State or Federal authority are afforded the protection of the laws of the United States.

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