In or near an area of restricted visibility, whether by day or night, the signals prescribed in this Rule shall be used as follows: Show
(a) Power-driven vessels making way through the waterA power-driven vessel making way through the water shall sound at intervals of not more than 2 minutes one prolonged blast. (b) Power-driven vessels underway but stopped and making no way through the waterA power-driven vessel underway but stopped and making no way through the water shall sound at intervals of not more than 2 minutes two prolonged blasts in succession with an interval of about 2 seconds between them. (c) Vessels not under command; vessels restricted in ability to maneuver; sailing vessels; vessels engaged in fishing; vessels engaged in towing or pushingA vessel not under command; a vessel restricted in her ability to maneuver, whether underway or at anchor; a sailing vessel; a vessel engaged in fishing, whether underway or at anchor; and a vessel engaged in towing or pushing another vessel shall, instead of the signals prescribed in paragraphs (a) or (b) of this Rule, sound at intervals of not more than 2 minutes, three blasts in succession; namely, one prolonged followed by two short blasts. (d) Vessels towedA vessel towed or if more than one vessel is towed the last vessel of the tow, if manned, shall at intervals of not more than 2 minutes sound four blasts in succession; namely, one prolonged followed by three short blasts. When practicable, this signal shall be made immediately after the signal made by the towing vessel. (e) Pushing and pushed vessels connected in composite unitWhen a pushing vessel and a vessel being pushed ahead are rigidly connected in a composite unit they shall be regarded as a power-driven vessel and shall give the signals prescribed in paragraphs (a) or (b) of this Rule. (f) Vessels at anchorA vessel at anchor shall at intervals of not more than 1 minute ring the bell rapidly for about 5 seconds. In a vessel of 100 meters or more in length the bell shall be sounded in the forepart of the vessel and immediately after the ringing of the bell the gong shall be sounded rapidly for about 5 seconds in the after part of the vessel. A vessel at anchor may in addition sound three blasts in succession; namely, one short, one prolonged and one short blast, to give warning of her position and of the possibility of collision to an approaching vessel. (g) Vessels agroundA vessel aground shall give the bell signal and if required the gong signal prescribed in paragraph (f) of this Rule and shall, in addition, give three separate and distinct strokes on the bell immediately before and after the rapid ringing of the bell. A vessel aground may in addition sound an appropriate whistle signal. (h) Vessels of less than 12 meters in lengthA vessel of less than 12 meters in length shall not be obliged to give the above-mentioned signals but, if she does not, shall make some other efficient sound signal at intervals of not more than 2 minutes. (i) Pilot vesselsA pilot vessel when engaged on pilotage duty may in addition to the signals prescribed in paragraphs (a), (b) or (f) of this Rule sound an identity signal consisting of four short blasts. (j) Vessels anchored in special anchorage areasThe following vessels shall not be required to sound signals as prescribed in paragraph (f) of this Rule when anchored in a special anchorage area designated by the Secretary: (i) a vessel of less than 20 meters in length; and (ii) a barge, canal boat, scow, or other nondescript craft. (Pub. L. 96–591, §2, Dec. 24, 1980, 94 Stat. 3431.) Pub. L. 108–293, title III, §303(a), (c), Aug. 9, 2004, 118 Stat. 1042, provided that this section is repealed effective on the effective date of final regulations prescribed by the Secretary of the Department in which the Coast Guard is operating under section 2071 of this title Section 2071 — Inland navigation rulesThe Secretary of the Department in which the Coast Guard is operating may issue inland navigation regulations applicable to all vessels upon the inland waters of the United States and technical annexes that are as consistent as possible with the respective annexes to the International Regulations.(Pub. L. 96–591, §3, Dec. 24, 1980, 94 Stat. 3433; Pub. L. 108–293, title III, §303(b), Aug. 9, 2004, 118 Stat. 1042.) References in Text The International Regulations, referred to in text, are the International Regulations for Preventing Collisions at Sea, 1972, which are maintained and published by the United States Coast Guard, U.S. Department of Homeland Security, in the publication Navigation Rules, which is available for sale by the Superintendent of Documents, U.S. Government Printing Office, Washington, D.C. 20402. See International Regulations for Preventing Collisions at Sea, 1972 note under section 1602 of this title Section 1602 — International RegulationsReferenced text will be loaded in a moment.. read more…. Section was enacted as part of section 2 of Pub. L. 96–591 which enacted the Inland Navigational Rules which comprise this subchapter.
Sound Signals in Restricted Visibility and Rule 35
Fog, mist, falling snow, heavy rainstorms, sandstorms or any other similar causes can make conditions that hamper visibility. Sound signals for vessels in restricted visibility, whether underway, at anchor or aground, day or night, are the subject of Rule 35 (COLREGS). The bell and gong are added into the mix of whistle sounds used as options for restricted visibility signals. Rule 35 is fairly complex, and it is advised to have a highlighter in hand while reading through it. The Rules of the Road state when underway ‘vessels shall sound at intervals of not more than two minutes’ the prescribed sound signal.Why a two minute rule? A requirement for all vessels is to maintain a proper look-out by sight and hearing. In restricted visibility, the two minutes allows the look-out to listen for sound signals from other vessels groping their way through the fog. COLREGS lists the following sound signals for vessels underway:
For these large yachts and ships, the bell is rapidly sounded from the foredeck, and immediately followed by the gong sounded rapidly from the afterdeck, both for about five seconds.
There are two classes of working vessels that do not use the bell and gong signals while at anchor.Commercial fishing boats that are fishing while at anchor, and vessels restricted in their ability to maneuver that are carrying out their work while at anchor must use the encumbered vessel sound signal of one prolonged and two short blasts.
To further finesse Rule 35, The International Regulations for Preventing Collisions at Sea (IRPCS), doesn’t oblige the bell signals to be used at anchor and when aground for vessels 12m (39ft) or more, but less than 20m (65.6ft) in length. Instead, she shall make some other efficient sound signal at intervals of not more than two minutes. Vessels less than 12m LOA are NOT required to use any of the sound signals required for vessels in restricted visibility. They also can make some other efficient sound signal at intervals of not more than two minutes. With the large number of sound signals available for use in restricted visibility, remembering all the possibilities can be difficult. Trying to quickly look up a sound signal heard in the fog by turning to Rule 35 in COLREGS can be a bit of a challenge. A good alternative is to use one of the many laminated visual shorthand versions of COLREGS sold at ship chandleries.For sound signals, a Morse code dot represents the short blast of about one-second duration. And a Morse code dash represents the prolonged blast of four to six seconds long. Here’s the link to reference the Related, Rule 34 describing maneuvering and warning for powered vessels underweigh in international waters If you like this, you’ll love: |