---
kind: "section"
citation: "46 C.F.R. § 130.140"
title: "46"
number: "130.140"
heading: "Steering on OSVs of 100 or more gross tons."
url: "https://uscodex.org/cfr/46/130.140"
---

# §130.140. Steering on OSVs of 100 or more gross tons.

- (a) Except as provided in [§ 128.110](/cfr/46/128.110.md) of this subchapter, each OSV of 100 GRT or more must have a means of steering that meets the—
  - (1) Applicable requirements of subchapters F and J of this chapter; or
  - (2) **Requirements for a hydraulic-helm steering-system in paragraph (b) of this section.**
- (b) Each hydraulic-helm steering-system must have the following:
  - (1) A main steering gear of adequate strength for, and capable of, steering the vessel at every service speed without being damaged at maximum astern speed.
  - (2) A hydraulic system with a maximum allowable working pressure of not more than 12,411 kPa (1,800 psi), dedicated to steering.
  - (3) Piping materials that comply with subchapter F of this chapter, and piping thickness of at least schedule 80.
  - (4) **Each fore-and-aft run of piping located as far inboard as practicable.**
  - (5) **Rudder stops.**
  - (6) **Either—**
    - (i) Two steering pumps in accordance with [§ 130.130(c)(3)](/cfr/46/130.130.md?p=c-3) of this part; or
    - (ii) A single hydraulic sump of the “cascading overflow” type with a centerline bulkhead open only at the top, if each half has enough capacity to operate the system.
  - (7) **Control of the main steering gear from the pilothouse, including—**
    - (i) Control from the helm;
    - (ii) Control of any necessary ancillary device (motor, pump, valve, or the like); and
    - (iii) **Adequate visibility when going astern.**
  - (8) Multiple-screw propulsion with independent control of propulsion from the pilothouse, complying with [§ 130.120](/cfr/46/130.120.md) of this part and being capable of steering the vessel.
  - (9) Dual hydraulic cylinders arranged so that either cylinder can be readily isolated, permitting the other cylinder to remain in service and move each rudder.
  - (10) The steering alarms and indicators required by [§ 58.25-25](/cfr/46/58.25-25.md) of this chapter, located in the pilothouse.
  - (11) Instantaneous protection against short circuit for electrical power, and control circuits sized and located as required by §§ [58.25-55 (d)](/cfr/46/58.25-55.md?p=d) and [(e)](/cfr/46/58.25-55.md?p=e) of this chapter.
  - (12) A rudder-angle indicator, at the steering-control station in the pilothouse, that is independent of the control of the main steering gear.
  - (13) **Means to locally start and stop the steering pumps.**
  - (14) Means to isolate any auxiliary means of steering so as not to impair the reliability and availability of the control required by [paragraph (b)(7)](#b-7) of this section.
  - (15) **Manual capability to center and steady the rudder if the vessel loses normal steering power.**
- (c) For compliance with [paragraph (b)](#b) of this section, a common piping system for pumps, helm, and cylinders is acceptable.

## Notes

### Amendments

[CGD 82-004 and CGD 86-074, 62 FR 49337, Sept. 19, 1997, as amended by USCG-2012-0208, 79 FR 48937, Aug. 18, 2014]

### Authority

Authority: 46 U.S.C. 3306; Department of Homeland Security Delegation No. 0170.1. Sections 130.140 and 130.400 also issued under sec. 617, Pub. L. 111-281, 124 Stat. 2905.

### Source

Source: CGD 82-004 and CGD 86-074, 62 FR 49337, Sept. 19, 1997, unless otherwise noted.

### Amendments

[CGD 82-004 and CGD 86-074, 62 FR 49337, Sept. 19, 1997, as amended by USCG-2012-0208, 79 FR 48937, Aug. 18, 2014]