33 CFR 84.05 - Horizontal positioning and spacing of lights.

§ 84.05 Horizontal positioning and spacing of lights.
(a) Except as specified in paragraph (e) of this section, when two masthead lights are prescribed for a power-driven vessel, the horizontal distance between them must not be less than one quarter of the length of the vessel but need not be more than 50 meters. The forward light must be placed not more than one half of the length of the vessel from the stem.
(b) On a power-driven vessel of 20 meters or more in length the sidelights shall not be placed in front of the forward masthead lights. They shall be placed at or near the side of the vessel.
(c) When the lights prescribed in Rule 27(b)(i) are placed vertically between the forward masthead light(s) and the after masthead light(s) these all-round lights shall be placed at a horizontal distance of not less than 2 meters from the fore and aft centerline of the vessel in the athwartship direction.
(d) When only one masthead light is prescribed for a power-driven vessel, this light must be exhibited forward of amidships. For a vessel of less than 20 meters in length, the vessel shall exhibit one masthead light as far forward as is practicable.
(e) On power-driven vessels 50 meters but less than 60 meters in length operated on the Western Rivers, and those waters specified in § 89.25, the horizontal distance between masthead lights shall not be less than 10 meters.
[CGD 81-008, 46 FR 62447, Dec. 24, 1981, as amended by CGD 88-07, 53 FR 10533, Apr. 1, 1988; CGD 94-011, 63 FR 5731, Feb. 4, 1998]
Beta! The text on the eCFR tab represents the unofficial eCFR text at ecfr.gov.
§ 84.05 Screens.

(a) The sidelights of vessels of 20 meters or more in length shall be fitted with matt black inboard screens and meet the requirements of § 84.15. On vessels of less than 20 meters in length, the sidelights, if necessary to meet the requirements of § 84.15, shall be fitted with matt black inboard screens. With a combined lantern, using a single vertical filament and a very narrow division between the green and red sections, external screens need not be fitted.

(b) On power-driven vessels less than 12 meters in length constructed after July 31, 1983, the masthead light, or the all-round light described in Rule 23(d)(§ 83.23(d) of this chapter) shall be screened to prevent direct illumination of the vessel forward of the operator's position.

This is a list of United States Code sections, Statutes at Large, Public Laws, and Presidential Documents, which provide rulemaking authority for this CFR Part.

This list is taken from the Parallel Table of Authorities and Rules provided by GPO [Government Printing Office].

It is not guaranteed to be accurate or up-to-date, though we do refresh the database weekly. More limitations on accuracy are described at the GPO site.

United States Code

Title 33 published on 2015-07-01

The following are ALL rules, proposed rules, and notices (chronologically) published in the Federal Register relating to 33 CFR Part 84 after this date.

  • 2015-07-27; vol. 80 # 143 - Monday, July 27, 2015
    1. 80 FR 44274 - Navigation and Navigable Waters; Technical, Organizational, and Conforming Amendments
      GPO FDSys XML | Text
      Final rule.
      This final rule is effective July 27, 2015.
      33 CFR Parts 3, 50, 51, 52, 62, 67, 72, 80, 82, 83, 84, 90, 96, 100, 101, 110, 117, 150, 151, 155, 156, 161, 162, 164, 165, 177, and 183