Subpart A-General

§ 157.01 Applicability.

(a) This part applies to each tank vessel of 150 gross tons or more, unless otherwise indicated, that carries crude oil or products in bulk and that is:

(1) Documented under the laws of the United States (U.S. vessel); or (2) A foreign vessel that:

(i) Transfers cargo at a port or place subject to the jurisdiction of the United States; or

(ii) Otherwise enters or operates in the navigable waters of the United States.

(b) This part does not apply to the following:

(1) Vessels under Subsections (4) and (5) of Sec. 5, Port and Tanker Safety Act of 1978 (Pub. L. 95-474, 92 Stat. 1480, 46 U.S.C. 391a).

(2) Any foreign vessel not destined for, or departing from, a port or place subject to the jurisdiction of the United States that is in innocent passage through the territorial seas of the United States or in transit through navigable waters of the United States which form a part of an international strait.

[CGD 77-058b, 45 FR 43706, June 30, 1980]

(a) "Length" or "L" means the distance in meters from the fore side of the stem to the axis of the rudder stock on a waterline at 85 percent of the least molded depth measured from the molded baseline, or 96 percent of the total length on that waterline, whichever is greater. In vessels designed with drag, the water line is measured parallel to the designed waterline.

(b) "Amidships" means the middle of the length.

(c) "Breadth" or "B" means the maximum molded breadth of a vessel in meters.

(d) "Center tank" means any tank inboard of a longitudinal bulkhead. (e) "Clean ballast" means ballast which:

(1) If discharged from a vessel that is stationary into clean, calm water on a clear day, would not:

(i) Produce visible traces of oil on the surface of the water or on adjoining shore lines, or

(ii) Cause a sludge or emulsion to be deposited beneath the surface of the water or upon adjoining shore lines; or

(2) If verified by an approved cargo monitor and control system, has an oil content that does not exceed 15 p.p.m. (f) "Combination carrier" means a vessel designed to carry oil or solid cargoes in bulk.

(g) "Deadweight" or "DWT" means the difference in metric tons between the lightweight displacement and the total displacement of a vessel measured in water of specific gravity 1.025 at the load waterline corresponding to the assigned summer freeboard.

(h) "Lightweight" means the displacement of a vessel in metric tons without cargo, oil fuel, lubricating oil, ballast water, fresh water, and feedwater in tanks, consumable stores, and any persons and their effects.

(i) "New Vessel" means:

(1) A U.S. vessel in domestic trade that:

(i) Is constructed under a contract awarded after December 31, 1974;

(ii) In the absence of a building contract, has the keel laid or is at a simi

157.104 Beale models.

157.106 Letter of acceptance. 157.108 Crude Oil Washing Operations and Equipment Manual for U.S. tank vessels: Bubmission.

157.110 Crude Oil Washing Operations and Equipment Manual for foreign tank vessels: Submission.

157.112 Approved Crude Oil Washing Operations and Equipment Manual. 157.114 Crude Oil Washing Operations and Equipment Manual: Not approved. 157.116 Required documents: U.S. tank vessels.

157.118 Required documents: Foreign tank vessels.

157.120 Waiver of required documents.

DESIGN, EQUIPMENT, AND INSTALLATION

157.122 Piping, valves, and fittings. 157.124 COW tank washing machines. 157.126 Pumps.

157.128 Stripping system.

157.130 Crude oil washing with more than one grade of crude oil.

157.132 Cargo tanks: Hydrocarbon vapor emissions.

157.134 Cargo tank drainage.

157.136 Two-way voice communications. 157.138 Crude Oil Washing Operations and Equipment Manual.

DEDICATED CLEAN BALLAST TANKS OPERATIONS

s othe

CGD

157.218 Dedicated clean ballast tanks: Al

terations.

DESIGN AND EQUIPMENT

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Subpart F-Exemption From § 157.10a or § 157.10c

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8157.03 Definitions.

As used in this part:

(a) "Length" or "L" means the distance in meters from the fore side of the stem to the axis of the rudder stock on a waterline at 85 percent of the least molded depth measured from the molded baseline, or 96 percent of the total length on that waterline, whichever is greater. In vessels designed with drag, the water line is measured parallel to the designed waterline.

(b) "Amidships" means the middle of the length.

(c) "Breadth" or "B" means the maximum molded breadth of a vessel in meters.

(d) "Center tank" means any tank inboard of a longitudinal bulkhead. (e) "Clean ballast" means ballast which:

(1) If discharged from a vessel that is stationary into clean, calm water on a clear day, would not:

(i) Produce visible traces of oil on the surface of the water or on adjoining shore lines, or

(ii) Cause a sludge or emulsion to be deposited beneath the surface of the water or upon adjoining shore lines; or

(2) If verified by an approved cargo monitor and control system, has an oil content that does not exceed 15 p.p.m.

(f) "Combination carrier" means a vessel designed to carry oil or solid cargoes in bulk.

(g) "Deadweight" or "DWT" means the difference in metric tons between the lightweight displacement and the total displacement of a vessel measured in water of specific gravity 1.025 at the load waterline corresponding to the assigned summer freeboard.

(h) "Lightweight" means the displacement of a vessel in metric tons without cargo, oil fuel, lubricating oil, ballast water, fresh water, and feedwater in tanks, consumable stores, and any persons and their effects.

(i) "New Vessel" means:

(1) A U.S. vessel in domestic trade that:

(i) Is constructed under a contract awarded after December 31, 1974;

(ii) In the absence of a building contract, has the keel laid or is at a simi

lar stage of construction after June 30, 1975;

(iii) Is delivered after December 31, 1977; or

(iv) Has undergone a major conversion for which:

(A) The contract is awarded after December 31, 1974;

(B) In the absence of a contract, conversion is begun after June 30, 1975; or (C) Conversion is completed after December 31, 1977; and

(2) A foreign vessel or a U.S. vessel in foreign trade that:

(i) Is constructed under a contract awarded after December 31, 1975;

(ii) In the absence of a building contract, has the keel laid or is at a similar stage of construction after June 30, 1976;

(iii) Is delivered after December 31, 1979; or

(iv) Has undergone a major conversion for which:

(A) The contract is awarded after December 31, 1975;

(B) In the absence of a contract, conversion is begun after June 30, 1976; or (C) Conversion is completed after December 31, 1979.

(j) "Existing vessel" means any vessel that is not a new vessel.

(k) "Major conversion" means a conversion of an existing vessel that:

(1) Substantially alters the dimensions or carrying capacity of the vessel, except the installation of only segregated ballast tanks, dedicated clean ballast tanks, or a crude oil washing system to meet this part;

(2) Changes the type of vessel; or (3) Substantially prolongs the vessel's service life.

(1) "From the nearest land" means from the baseline from which the territorial sea of the United States is established in accordance with international law.

(m) "Instantaneous rate of discharge of oil content" means the rate of discharge of oil in liters per hour at any instant, divided by the speed of the vessel in knots at the same instant.

(n) "Oil" includes oil of any kind or in any form, including, but not limited to, petroleum, fuel oil, sludge, oil refuse, and oil mixed with wastes other than dredged spoil.

(o) "Oil fuel" means any oil used as fuel for machinery in the vessel in which it is carried.

(p) "Oily mixture" means a mixture with any oil content.

(q) "Permeability of a space" means the ratio of the volume within a space that is assumed to be occupied by water to the total volume of that space.

(r) "Segregated ballast" means the ballast water introduced into a tank that is completely separated from the cargo oil and oil fuel system and that is permanently allocated to the carriage of ballast.

(s) "Slop tank” means a tank specifically designated for the collection of cargo drainings, washings, and other oil mixtures.

(t) "Tank" means an enclosed space that is formed by the permanent structure of a vessel, and designed for the carriage of liquid in bulk.

(u) "Tank barge" means a tank vessel not equipped with a means of self-propulsion.

(v) "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

(1) Is a vessel of the United States; (2) Operates on the navigable waters of the United States; or

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

(w) "Foreign trade" means any trade that is not domestic trade.

(x) "Wing tank" means a tank that is located adjacent to the side shell plating.

(y) "Tankship" means a tank vessel propelled by mechanical power or sail.

(z) "Domestic trade" means trade between ports or places within the United States, its territories and possessions, either directly or via a foreign port including trade on the navigable rivers, lakes, and inland waters.

(aa) "Cargo tank length" means the length from the collision bulkhead to the forward bulkhead of the machinery spaces.

(bb) "Crude oil" means any liquid hydrocarbon mixture occurring naturally in the earth, whether or not treated to render it suitable for trans

portation, 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.

(cc) "Product" means any liquid hydrocarbon mixture in any form, except crude oil, petrochemicals, and liquefied gases.

(dd) "Dedicated clean ballast tank” means a cargo tank that is allocated solely for the carriage of clean ballast.

(ee) "Integrated tug barge" means a tug and a tank barge with a mechanical system that allows the connection of the propulsion unit (the tug) to the stern of the cargo carrying unit (the tank barge) so that the two vessels function as a single self-propelled vessel.

(ff) "Ballast voyage" means the voyage that a tank vessel engages in after it leaves the port of final cargo discharge.

(gg) "Large primary structural member" includes any of the following:

(1) Web frames.

(2) Girders.

(3) Webs.

(4) Main brackets.

(5) Transverses.

(6) Stringers.

(7) Struts in transverse web frames when there are 3 or more struts and the depth of each is more than 15 of the total depth of the tank.

means

(hh) "MARPOL Protocol" the Protocol of 1978 Relating to the International Convention for the Prevention of Pollution from Ships, 1973, done at London on February 17, 1978. This Protocol incorporates and modifies the International Convention for the Prevention of Pollution from Ships, 1973, done at London on November 2, 1973.

[CGD 74-32, 40 FR 48283, Oct. 14, 1975, as amended by CGD 75-201, 41 FR 1482, Jan. 8, 1976; CGD 75-240, 41 FR 54179, Dec. 13, 1976; CGD 77-058b, 45 FR 43706, June 30, 1980; CGD 76-088b, 48 FR 45720, Oct. 6, 1983; CGD 82-28, 50 FR 11625, Mar. 22, 1985]

§ 157.04 Authorization of classification societies.

(a) The Coast Guard may authorize any classification society (CS) to per

form certain plan reviews, certifications, and inspections required by this part on vessels classed by that CS, except that only U.S. classification societies may be authorized to perform those plan reviews, inspections, and certifications for U.S. vessels.

(b) If a CS desires authorization to perform the plan reviews, certifications, and inspections required under this part, it must submit to the Commandant (G-MVI), U.S. Coast Guard, Washington, DC 20593-0001, evidence from the governments concerned showing that they have authorized the CS to inspect and certify vessels on their behalf under the MARPOL Protocol.

(c) The Coast Guard notifies the CS in writing whether or not it is accepted as an authorized CS. If authorization is refused, reasons for the refusal are included.

(d) Acceptance as an authorized CS terminates unless the following are met:

(1) The authorized CS must have each Coast Guard regulation that is applicable to foreign vessels on the navigable waters of the United States.

(2) Each issue concerning equivalents to the regulations in this part must be referred to the Coast Guard for determination.

(3) Copies of any plans, calculations, records of inspections, or other documents relating to any plan review, inspection, or certification performed to meet this part must be made available to the Coast Guard.

(4) Each document certified under §§ 157.116(a)(2), 157.118(b)(1)(ii), and 157.216(b)(1)(ii) must be marked with the name or seal of the authorized CS.

(5) A copy of the final documentation that is issued to each vessel that is certified under this part must be referred to the Commandant (G-MVI), U.S. Coast Guard, Washington, D.C. 20593-0001.

(Reporting and recordkeeping requirements approved by the Office of Management and Budget under control number 2115-0520) [CGD 82-28, 50 FR 11625, and 11630, Mar. 22, 1985, as amended by CGD 88-052, 53 FR 25122, July 1, 1988]