--- kind: "section" citation: "46 C.F.R. § 58.25-85" title: "46" number: "58.25-85" heading: "Special requirements for tank vessels." url: "https://uscodex.org/cfr/46/58.25-85" --- # §58.25-85. Special requirements for tank vessels. - (a) Each tank vessel must meet the applicable requirements of [§§ 58.25-1 through 58.25-80](/cfr/46/58.25-1..58.25-80.md). - (b) On each tank vessel of 10,000 gross tons or over, the main steering gear must comprise two or more identical power units that comply with [§ 58.25-10(e)(2)](/cfr/46/58.25-10.md?p=e-2). - (c) Each tank vessel of 10,000 gross tons or over constructed on or after September 1, 1984, must comply with the following: - (1) The main steering gear must be arranged so that, in case of loss of steering capability due to a single failure in any part of the power actuating system of the main steering gear, excluding seizure of a rudder actuator or failure of the tiller, quadrant, or components serving the same purpose, steering capability can be regained after the loss of one power actuating system. - (2) The main steering gear must include either— - (i) Two separate and independent power actuating systems, complying with [§ 58.25-10(b)(2)](/cfr/46/58.25-10.md?p=b-2); or - (ii) At least two identical hydraulic-power actuating systems, which, acting simultaneously in normal operation, must comply with [§ 58.25-10(b)(2)](/cfr/46/58.25-10.md?p=b-2). - (3) Steering gear other than hydraulic must meet equivalent standards to the satisfaction of the Commanding Officer, Marine Safety Center. - (d) On each tank vessel of 10,000 gross tons or over, but less than 100,000 deadweight tons, the main steering gear need not comply with [paragraph (c)](#c) of this section if the rudder actuator or actuators installed are non-duplicated hydraulic and if— - (1) The actuators comply with [§ 58.25-60](/cfr/46/58.25-60.md); and - (2) In case of loss of steering capability due to a single failure either of any part of the piping systems or in one of the power units, steering capability can be regained. - (e) On each tank vessel of less than 70,000 deadweight tons, constructed before, and with a steering-gear installation before, September 1, 1986, and on an international voyage, the steering gear not complying with [paragraph (c)](#c) (1), (2), or (3) of this section, as applicable, may continue in service if the steering gear has a proved record of reliability and is in good repair. - (f) Each tank vessel of 10,000 gross tons or over, constructed before, and with a steering-gear installation before, September 1, 1984, must— - (1) Meet the applicable requirements in §§ [58.25-15](/cfr/46/58.25-15.md), [58.25-20(c)](/cfr/46/58.25-20.md?p=c), [58.25-25 (a)](/cfr/46/58.25-25.md?p=a), [(d)](/cfr/46/58.25-25.md?p=d), and [(e)](/cfr/46/58.25-25.md?p=e), and [58.25-70 (e)](/cfr/46/58.25-70.md?p=e), [(h)](/cfr/46/58.25-70.md?p=h), [(i)](/cfr/46/58.25-70.md?p=i), and [(j)](/cfr/46/58.25-70.md?p=j); - (2) Ensure working access to machinery and controls in the steering-gear compartment (which must include handrails and either gratings or other non-slip surfaces to ensure a safe working environment in case hydraulic fluid leaks); - (3) Have two separate and independent steering-gear control systems, each of which can be operated from the pilothouse; except that it need not have separate steering wheels or steering levers; - (4) Arrange each system required by [paragraph (f)(3)](#f-3) of this section so that, if the one in operation fails, the other can be operated from the pilothouse immediately; and - (5) Supply each system required by [paragraph (f)(3)](#f-3) of this section, if electric, with power by a circuit that is— - (i) **Used for no other purpose; and either—** - (ii) Connected in the steering-gear compartment to the circuit supplying power to the power unit or units operated by that system; or - (iii) Connected directly to the busbars supplying the circuit for its steering-gear power unit or units at a point on the switchboard adjacent to that supply. ## Notes ### Amendments [CGD 83-043, 60 FR 24776, May 10, 1995, as amended by USCG-2020-0634, 89 FR 50178, June 12, 2024] ### Source Source: CGD 83-043, 60 FR 24776, May 10, 1995, unless otherwise noted. ### Authority Authority: 43 U.S.C. 1333; 46 U.S.C. 3306, 3703; E.O. 12234, 45 FR 58801, 3 CFR, 1980 Comp., p. 277; DHS Delegation No. 00170.1, Revision No. 01.4. ### Source Source: CGFR 68-82, 33 FR 18878, Dec. 18, 1968, unless otherwise noted. ### Amendments [CGD 83-043, 60 FR 24776, May 10, 1995, as amended by USCG-2020-0634, 89 FR 50178, June 12, 2024]