(g) A ship at anchor shall ring rapidly for approximately 5 seconds at intervals not exceeding 1 minute. In the case of a vessel of 100 metres in length and over, the bell shall ring in the forward part of the container and, immediately after the bell has ranging, the gong shall ring rapidly in the aft part of the vessel for approximately 5 seconds. A ship at anchor can also cause three successive explosions, one short, one prolonged and one short, to warn of its position and the possibility of a collision with an approaching ship. A ship approaching a bend or an area of a canal or channel where other ships may be obscured by an intermediate obstacle shall trigger a prolonged impact. Such a signal shall be responded to by a prolonged explosion of any approaching vessel near the curve or behind the intermediate obstacle. (l) The following vessels are not required to carry the audible signals referred to in paragraph (g) of these Regulations when anchored in a special anchorage designated by the Coast Guard: If the ship hears the signal with one or two shocks from the other, it shall, if it consents, give the same whistle and take the necessary measures: to ensure safe passage. There are different combinations of explosions for different movements on the water, which can use short and long explosions. Where motor ships are within sight of each other and meet or pass each other within half a mile of each other, each ship under way shall use the following audible signals when manoeuvring within the limits permitted or required by national rules. Note: These are not the only rules for audible signals with limited visibility; There are additional rules for beeps, which can be found in traffic rules or in Chapman`s Piloting. When two motorized vessels meet within half a mile, audible signals shall be used. The trigger vessel indicates a maneuver, and the reactive vessel agrees or disagrees. If you plan to pass another ship from behind, there are several things you need to do. Any vessel that overtakes another vessel must avoid the overhauled vessel.
That means you can`t expect them to move, slow down, or change course. If you plan to pass them on YOUR starboard side, you will have to sound a small bang. If they understand and accept your signal, they will sound a short shot in response. The overhauled vessel is responsible for maintaining course and speed to minimize the risk of collision. (f) When a pusher container and an advanced vessel are rigidly connected in a composite unit, they shall be considered as motorized vessels and shall give the signs prescribed in subparagraphs (a) or (b) of these Regulations. (a) A motorized vessel crossing the water shall initiate a prolonged explosion at intervals not exceeding 2 minutes. The explosion signals of one and two short ones in the internal rules indicate the intention to pass with another boat. (k) A pilot may, in addition to the signals prescribed in subparagraphs (a), (b) or (g) of these regulations, emit an identity signal consisting of four short explosions. A ship that colludes with another ship in a radiotelephone meeting, crossing, or overtaking situation under the Bridge-to-Bridge Radiotelephone Act (85 Stat.
165; 33 U.S.C. 1207) is not required to blow whistles prescribed in this rule, but may do so. If no agreement is reached, alerts must be exchanged in a timely manner and given priority. However, if the ship has doubts as to the safety of the proposed manoeuvre, it shall emit the danger signal of at least five short and fast whistles. Each vessel then takes appropriate precautions until a safe passage agreement is reached. Before getting into maneuvers and sound signals, it is first necessary to understand some simple definitions related to this topic. (h) A grounded ship shall give the bell signal and, if necessary, the gong signal prescribed in subparagraph (g) and shall also make three separate and distinct bell strokes immediately before and after the bell is ringing rapidly. A ship that has run aground can also give an appropriate whistle signal.
(c) a ship that is not under command; a ship with limited manoeuvrability, either en route or at anchor; a sailboat; a vessel fishing en route or at anchor; and a ship towing or pushing another ship shall cause three successive explosions at intervals not exceeding 2 minutes instead of the signals prescribed in subparagraphs (a) or (b) of this regulation, namely: one has been prolonged, followed by two short explosions. If you encounter an oncoming ship and want to go from port to port, you will have to sound a short push with your horn. If the other boat agrees, it should react with a similar bang. The word whistle refers to any audible signalling device capable of producing the prescribed explosions. The term shortness of breath means an explosion lasting about one second. Audible signals may only be used when ships are in sight and meet or cross at a distance of half a mile. These signs shall never be used in fog or other conditions of restricted visibility when ships are not visible to each other. Only fog signals listed in Rule 35 of the Rules of Procedure may sound at that time. (i) A ship of 12 metres in length and over but less than 20 metres shall not be required to give the bell signals prescribed in subparagraphs (g) and (h) of these Regulations. However, if it fails to do so, it shall emit another effective audible signal at intervals not exceeding 2 minutes. Within sight of another vessel, a powerboat intending to pass another powerboat shall indicate its intention by the following signals at the whistle: The powerboat to be overhauled shall, if appropriate, emit a similar audible signal.