Source: http://www.navcen.uscg.gov/?pageName=33CFR84
Timestamp: 2014-04-23 11:59:30
Document Index: 799613771

Matched Legal Cases: ['§84', '§84', '§84', '§84', '§84', '§84', '§84']

33 CFR 84: ANNEX I - INLAND POSITIONING & TECHNICAL DETAILS OF LIGHTS & SHAPES
33 CFR 84: ANNEX I - INLAND POSITIONING &AMP; TECHNICAL DETAILS OF LIGHTS &AMP; SHAPES
�84.01. Definition
�84.03. Vertical Positioning and Spacing of
�84.05. Horizontal Positioning and Spacing
�84.07. Details of location of direction-indicating lights for fishing
vessels, dredgers and vessels engaged in underwater operations
�84.09. Screens for Sidelights
�84.11. Shapes
�84.13. Color Specification of Lights
§84.15 Intensity of Lights
§84.17. Horizontal Sectors
§84.19. Vertical Sectors
§84.21. Intensity of Non-Electric Lights
§84.23. Maneuvering Light
§84.24. High Speed Craft
§84.25. Approval [Reserved]
� 84.01 Definitions
3.7s0.1667; where
s= displacement corresponding to the design waterline
(meters3).
(d) The term "Rule" or "Rules" means the Inland Navigation Rules contained in Sec. 2 of the Inland Navigational Rules Act of 1980 (Pub. L. 96-591, 94 Stat. 3415, 33
U.S.C. 2001, December 24, 1980) as amended.
NOTE to paragraph (b): The same formula expressed in pounds and knots is maximum speed in knots
(kts) equal to or exceeding 1.98 (lbs)
s= displacement corresponding to design waterline in pounds.
� 84.03 Vertical positioning and spacing of lights
(e) One of the two or three masthead lights prescribed for a powerdriven vessel when engaged in towing or pushing another vessel shall be placed in the same position as either the forward masthead light or the after masthead light, provided that the lowest after masthead light shall be at least 2 meters vertically higher than the highest forward masthead light.
(f) (1) The masthead light or lights prescribed in Rule 23(a) shall be so placed as to be above and clear of all other lights and obstructions except as described in paragraph (f)(2) of this section.
(2) When it is impracticable to carry the all-round lights prescribed in Rule 27(b)(i) below the masthead lights, they may be carried above the after masthead
light(s) or vertically in between the forward masthead light(s) and after masthead
light(s), provided that in the latter case the requirement of � 84.05(d) shall be complied with.
(j) The lower of the two all-round lights prescribed for a vessel when engaged in fishing shall be at a height above the sidelights not less than twice the distance between the two vertical lights. (k) The forward anchor light prescribed in Rule 30(a)(i), when two are carried, shall not be less than 4.5 meters above the after one. On a vessel of 50 meters or more in length this forward anchor light shall be placed at a height of not less than 6 meters above the hull.
� 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 shall be placed not more than one half of the length of the vessel from the stem.
(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 on 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.
� 84.07 Details of location of direction-indicating lights for fishing vessels, dredgers and vessels engaged in underwater operations
� 84.09 Screens
(a) The sidelights of vessels of 20 meters or more in length shall be fitted with mat black inboard screens and meet the requirements of � 84.17. On vessels of less than 20 meters in length, the sidelights, if necessary to meet the requirements of � 84.17, shall be fitted with mat 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.
� 84.11 Shapes
(a) The chromaticity of all navigation lights shall conform to the following standards, which lie within the boundaries of the area of the diagram specified for each color by the International Commission on Illumination
(CIE), in the "Colors of Light Signals", which is incorporated by reference. It is Publication CIE No. 2.2. (TC-1.6), 1975, and is available from the Illumination Engineering Society, 345 East 47th Street, New York, NY 10017. It is also available for inspection at the Office of the Federal Register, Room 8401, 1100 L Street N.W., Washington, D.C. 20408. This incorporation by reference was approved by the Director of the Federal Register.
I is luminous intensity in candelas under service conditions, T is threshold factor 2 x 10-7
lux, D is range of visibility (luminous range) of the light in nautical miles, K is atmospheric
transmissivity. For prescribed lights the value of K shall be 0.8, corresponding to a meteorological visibility of approximately 13 nautical miles.
(a) (1) In the forward direction, sidelights as fitted on the vessel shall show the minimum required intensities. The intensities shall decrease to reach practical cut-off between 1 and 3 degrees outside the prescribed sectors.
� 84.21 Intensity of non-electric lights
Non-electric lights shall so far as practicable comply with the minimum intensities, as specified in the Table given in �
� 84.23 Maneuvering light
Notwithstanding the provisions of � 84.03(f), the maneuvering light described in Rule 34(b) shall be placed approximately in the same fore and aft vertical plane as the masthead light or lights and, where practicable, at a minimum height of one-half meter vertically above the forward masthead light, provided that it shall be carried not less than one-half meter vertically above or below the after masthead light. On a vessel where only one masthead light is carried the maneuvering light, if fitted, shall be carried where it can best be seen, not less than one-half meter vertically apart from the masthead light.
� 84.24 High Speed Craft
The masthead light of high speed craft with a length to breadth ratio of less than 3.0 may be placed at a height related to the breadth lower than that precribed in Sec. 84.03(a)(1), provided that the base angle of the isosceles triangle formed by the sidelights and masthead light when seen in end elevation is not less than 27 degrees as determined by the formula in paragraph (b) of this section.
(b) The minimum height of masthead light above sidelights is to be determined by the following formula: Tan 27�=x/y; where Y is the horizontal distance between the sidelights and X is the height of the forward masthead light.