Coast Guard, DHS § 160.035–3

Services Administration, Business (d) For the purpose of calculations Service Center, Washington, DC 20407. and conducting tests, the weight of the persons shall be taken at 165 pounds [CGFR 65–9, 30 FR 11467, Sept. 8, 1965, as each. amended by CGD 72–133R, 37 FR 17039, Aug. 24, 1972; USCG–1999–5151, 64 FR 67184, Dec. 1, [CGFR 65–9, 30 FR 11467, Sept. 8, 1965, as 1999] amended by CGD 95–028, 62 FR 51211, Sept. 30, 1997] § 160.035–2 General requirements for lifeboats. § 160.035–3 Construction of steel oar- propelled lifeboats. (a) The requirements of this subpart apply to all new construction. Life- (a) Type. Lifeboats shall have rigid approved and in use prior to the sides and be fitted with internal buoy- regulations in this subpart may be con- ancy so arranged that the boats will tinued in service if in satisfactory con- float in the flooded condition when dition. fully loaded with persons and equip- ment. The capacity of an oar-propelled (b) All lifeboats must be properly lifeboat is limited to a maximum of 59 constructed and shall be of such form persons. Lifeboats designed to carry 60, and proportions that they shall be but not more than 100, persons shall be readily maneuverable, have ample sta- either hand-propelled or motor-pro- bility in a seaway, and sufficient pelled. Lifeboats designed to carry freeboard when fully loaded with their more than 100 persons shall be motor- full complement of persons and equip- propelled, except that a lifeboat de- ment. All lifeboats shall be capable of signed to carry more than 100 persons maintaining positive stability when may be hand-propelled if it is a re- open to the sea and loaded with their placement for a previously approved full complement of persons and equip- hand-propelled lifeboat. ment. All lifeboats must be open boats (b) Materials. (1) Plating for shell, with rigid sides having internal buoy- floors, air tanks, etc., must be in ac- ancy only. Lifeboats with a rigid shel- cordance with ASTM A 653, Coating ter may be approved, provided that it Designation G90 (incorporated by ref- may be readily opened from both inside erence, see § 160.035–1). The bend test and outside, and does not impede rapid required by these specifications must embarkation and disembarkation or be made after the galvanizing or other the launching and handling of the life- anticorrosive treatment has been ap- . plied. (c) Lifeboats may be constructed of (2) Rivets and rolled or extruded steel, aluminum, fibrous glass rein- shapes such as , , , forced plastic (FRP), or other mate- , etc., shall be made by the rials receiving specific approval: Pro- open-hearth or electric furnace process vided, That, the weight of the fully in accordance with ASTM Standard equipped and loaded lifeboat shall not Specification A 36 (incorporated by ref- exceed 44,800 pounds, and the carrying erence, see § 160.035–1). Consideration capacity calculated in accordance with will be given to the use of other steels § 160.035–9 of this specification shall not having equivalent strength where lon- exceed 150 persons. gitudinal cold forming is necessary. (1) The thwarts, side benches and (c) Riveting. (1) Riveting of the shell footings of lifeboats shall be painted or plating to the keel, stem, and sternpost otherwise colored international orange shall be button rivets, staggered in accordance with Federal Specifica- with not less than 12 rivets to the foot. tion TT-P-59. The area in way of the The distance from the edge of the plate red mechanical disengaging gear con- to the centers of the rivets in the near- trol lever, from the keel to the side est row shall be not less than 1⁄2 inch bench, shall be painted or otherwise nor more than 3⁄4 inch. Rivets con- colored white, to provide a contrasting necting the shell to the shall background for the lever. This band of be spaced not more than 3 inches on white should be approximately 12 centers. The size of the rivets for con- inches wide depending on the internal necting the shell plating to the keel, arrangements of the lifeboat. stem, sternpost, and gunwale shall be

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1⁄4-inch diameter for boats 28 feet and shall have a minimum factor of safety under and 5⁄16-inch diameter for boats of six. over 28 feet. (2) For construction and capacity of (2) The connection of the floors to disengaging apparatus, see subpart the shell shall be a single row of rivets 160.033. not less than 3⁄16 inch in diameter and (i) Plugs. Each lifeboat shall be fitted spaced not more than 3 inches on cen- with an automatic plug so designed and ters. installed as to insure complete drain- (d) Welding. Welding may be sub- age at all times when the boat is out of stituted for riveting in any location. It the water. The automatic plug shall be shall be performed by welders qualified provided with a cap attached to the by the U.S. Coast Guard, American Bu- lifeboat by a suitable chain. The loca- reau of Shipping, or U.S. Navy Depart- tion of drain plug is to be marked on ment, and only approved electrodes the vertical surface in the vicinity of shall be used. Details of the joints shall the plug below the side bench with the be indicated on the construction draw- word ‘‘plug’’ in 3-inch white letters and ings submitted for approval. with an arrow pointing in the direction (e) Gunwale braces. (1) The gunwale of the drain plug. braces shall be bolted to the thwarts (j) Protection against corrosion. (1) All with at least two carriage bolts of a steel or iron entering into the con- size not less than that noted in table struction of lifeboats shall be galva- 160.035–3(e)(1) and riveted or welded to nized by the hot dipped process. All the gunwales. Where riveted to the fabricated pieces or sections are to be gunwale, at least two rivets of a size galvanized after fabrication. Other not less than that noted in table methods of corrosion prevention will be 160.035–3(e)(1) shall be used. given special consideration. TABLE 160.035–3(e)(1) (2) Where welded construction is em- ployed, the material shall be galva- Length of lifeboat Brace size Bolts and rivets nized after welding unless impractical (inches) diameter (inch) to do so in which case consideration

22 feet and under ...... 3×1⁄4 5⁄16 will be given to equivalent protection. ×5 3 Over 22 feet and not 3 ⁄16 ⁄8 (3) Provisions shall be made to obtain over 28. a satisfactory bond between the metal Over 28 feet ...... 3×3⁄8 7⁄16 and the paint. (2) Bracket type gunwale braces will (k) . (1) Each lifeboat shall be be given special consideration. fitted with a and . The rud- (f) Seats. (1) The thwarts, side bench- der shall be fitted with a 1⁄2-inch diame- es, and end benches shall be of fir, yel- ter manila lanyard of such length as to low pine, fibrous glass reinforced plas- permit the rudder to be shipped with- tic (FRP), or approved equivalent. out untying the lanyard. (2) The edges of all thwarts, side, and (2) A suitable hinged or pivoted tiller end benches shall be well rounded. shall be provided. (3) Suitable foot rests shall be fur- (3) Rudder stops shall be provided to nished at a distance of between 17 and limit the rudder angle to approxi- 20 inches below the thwarts and side mately 45 degrees each side of the cen- benches. This may be accomplished by terline. raising the footings from the bottom of (l) Buoyancy tanks. (1) All lifeboats the boat. shall have inherent buoyancy, or shall (4) The leading edge of the thwart or be fitted with buoyancy tanks or other end bench shall be located a minimum equivalent noncorrodible buoyancy of 3 inches and a maximum of 6 inches units, which shall not be adversely af- distance from the Rottmer release fected by oil or oil products, sufficient gear. to float the boat and its equipment (g) Stretchers. Stretchers of sufficient when the boat is flooded and open to size and strength shall be fitted in suit- the sea. An additional volume of buoy- able positions for rowing. ancy, or buoyancy units, equal to at (h) Disengaging apparatus. (1) Connec- least one-tenth the cubic capacity of tions for the disengaging apparatus the lifeboat shall be provided.

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(2) At least 50 percent of the buoy- below the turn of the and extend ancy shall be located along the sides of approximately one-half of the length of the boat and shall be so located that the lifeboat on each side. The ends of the boat will be on even keel when the grab rails shall be faired to prevent flooded. fouling and all connections of the rails (3) The tops of the buoyancy tanks or to the lifeboat shall be made by riv- buoyancy units shall be protected by eting the palms of the brackets to a the side benches or other suitable small plate and riveting the plate to means. The construction shall be such the shell. To prevent rupture of the that water will not collect on the tops shell if the grab rail is carried away, of the tanks. more rivets shall be used in attaching (4) Built-in buoyancy tanks. Each the plate to the shell than in fastening built-in buoyancy tank shall be filled the bracket to the plate. The clearance with buoyancy material. The amount between the grab rail pipe and the of material required shall be deter- shall be at least 11⁄2 inches. The connec- mined by the flooding test in accord- tions of the rails to a fibrous glass re- ance with § 160.035–11(b)(2). The buoy- inforced plastic lifeboat hull will be ancy materials used shall meet the re- given special consideration. quirements set forth for core materials (o) Hand rails. All lifeboats intended as follows: for use in ocean and coastwise service Core ...... Polystyrene .... MIL-P- shall be fitted with hand rails approxi- 40619 mately 18 inches in length, constructed MIL-P- and attached to the lifeboat in the 19644 same manner as the grab rails required Polyurethane MIL-P- by paragraph (n) of this section. The 21929 clearance between the hand rail pipe 1 (m) Equipment stowage. (1) Provision and the hull shall be at least 1 ⁄2 inches. lockers, water tanks, and special equip- The hand rails shall be located approxi- ment lockers shall be watertight and mately parallel to and at both ends of so designed and located as to fit under the grab rails and spaced midway be- the side benches, end benches, or foot- tween the grab rail and the gunwale ings without projecting into the ac- and midway between the grab rail and commodation spaces of the lifeboat. In the keel on both sides of the lifeboat special cases, stowage under the provided that, when the distance from grab rail to gunwale or to the keel ex- thwarts will be permitted. Standard 1⁄4 inch pipe size testing nipples shall be ceeds 4 feet, two hand rails shall be fitted to all such lockers or tanks. fitted so as to provide equal spacing. In (2) Water tanks shall be constructed no case shall the hand rails project be- of at least 18 USSG material. An open- yond the widest part of the boat. Re- ing with a dogged type cover shall be cessed hand rails or other alternate ar- provided for removal of water cans. rangements will be given consider- This opening shall be at least 7 inches ation. in diameter, but in any case shall be of [CGD 95–028, 62 FR 51211, Sept. 30, 1997, as sufficient size that all water cans can amended by USCG–1998–4442, 63 FR 52191, be removed. In addition, built-in water Sept. 30, 1998; USCG–1999–5151, 64 FR 67184, tanks shall have an opening at least 13 Dec. 1, 1999; USCG–2000–7790, 65 FR 58463, inches in diameter with a bolted cover Sept. 29, 2000] for the purpose of inspection and main- tenance. A 2-inch diameter fill cap § 160.035–5 Construction of steel shall be installed for the purpose of motor-propelled lifeboats with and without radio cabin. storing rain water. A standard 1⁄4-inch pipe size drainage nipple with hex- (a) General provisions applicable to all agonal cap shall be fitted in the bottom motor-propelled lifeboats. (1) A motor- of the tank in an accessible location propelled lifeboat, carried as part of and may be used for air testing the the lifesaving equipment of a vessel, water tank. whether required or not, shall comply (n) Grab rails. Grab rails shall be sub- with all the requirements for an oar- stantially attached to each lifeboat propelled lifeboat, and in addition,

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