In inconspicuous, partly submerged vessels or objects being towed:Ī power-driven vessel underway shall exhibit:Ī second masthead light abaft of and higher than the forward one except that a vessel of less than 50 m in length shall not be obliged to exhibit such light but may do so Īn air-cushion vessel when operating in the non-displacement mode shall, in addition to the lights prescribed in paragraph (a) of this Rule, exhibit an all-round flashing yellow light.Ī power-driven vessel of less than 12 m in length may in lieu of the lights prescribed in paragraph (a) of this Rule exhibit an all-round white light and sidelights Ī power-driven vessel of less than 7 m in length whose maximum speed does not exceed 7 knots may in lieu of the lights prescribed in paragraph (a) of this Rule exhibit an all-round white light and shall, if practicable, also exhibit sidelights In vessels of 12 m or more in length but less than 50 m in length:Ī masthead light, 5 miles except that where the length of the vessel is less than 20 m, 3 miles Ī white, red, green or yellow all-round light, 2 miles. The lights prescribed in these Rules shall have an intensity as specified in section 8 of annex I to these Regulations so as to be visible at the following minimum ranges:Ī white, red, green or yellow all-round light, 3 miles. Towing light means a yellow light having the same characteristics as the sternlight defined in paragraph (c) of this Rule.Īll-round light means a light showing an unbroken light over an arc of the horizon of 360°.įlashing light means a light flashing at regular intervals at a frequency of 120 flashes or more per minute. Sternlight means a white light placed as nearly as practicable at the stern showing an unbroken light over an arc of the horizon of 135° and so fixed as to show the light 67.5° from right aft on each side of the vessel. In a vessel of less than 20 m in length the sidelights may be combined in one lantern carried on the fore-and-aft centreline of the vessel. Sidelights means a green light on the starboard side and a red light on the port side each showing an unbroken light over an arc of the horizon of 112.5° and so fixed as to show the light from right ahead to 22.5° abaft the beam on its respective side. Masthead light means a white light placed over the fore-and-aft centreline of the vessel showing an unbroken light over an arc of the horizon of 225° and so fixed as to show the light from right ahead to 22.5° abaft the beam on either side of the vessel. The lights and shapes specified in these Rules shall comply with the provisions of annex I to these Regulations. The Rules concerning shapes shall be complied with by day. The lights prescribed by these Rules shall, if carried, also be exhibited from sunrise to sunset in restricted visibility and may be exhibited in all other circumstances when it is deemed necessary. The Rules concerning lights shall be complied with from sunset to sunrise, and during such times no other lights shall be exhibited, except such lights as cannot be mistaken for the lights specified in these Rules or do not impair their visibility or distinctive character, or interfere with the keeping of a proper look-out. ![]() ![]() (b) Whenever a vessel subject to the jurisdiction of the United States is in the territorial waters of a foreign state the International Regulations shall be applicable to, and shall be complied with by, that vessel to the extent that the laws and regulations of the foreign state are not in conflict there with.Rules in this part shall be complied with in all weathers.
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