- 21. Assumptions shall not be made on the basis of scanty information
- (Rule 7 (Risk of collision))
- 22. Using all available means to deter<span class="highlight">mine</span> if risk of collision exists
- (Rule 7 (Risk of collision))
- 23. Annex III - Technical details of sound signal appliances
- (Annex III)
- 1. Whistles (a) Frequencies and range of audibility The fundamental frequency of the signal shall lie within the range 70-700 Hz. The range of audibility of the signal from a whistle shall be determined by those frequencies, which may include the fundamental and/or one or more higher frequencies, which lie within the range 180-700Hz (± 1%) for a vessel of 20 m or more in length, or 180-2100 Hz(±1%) for a vessel of less than 20 m in length and which provide the sound pressure levels specified in paragraph 1 (c) below. (b) Limits of fundamental frequencies To ensure a wide variety of whistle characteristics, the fundamental frequency of a whistle shall be between the following limits: (i) 70-200 Hz, for a vessel 200 m or more in length; (ii) 130-350 Hz, for a vessel 75 m but less than 200 m in length; (iii) 250-700 Hz, for a vessel less than 75 m in length. (c) Sound signal intensity and range of audibility A whistle fitted in a vessel shall provide, in the direction ...
- 24. Annex I - Positioning and technical details of lights and shapes
- (Annex I)
- 1. Definition The term "height above the hull" means height above the uppermost continuous deck. This height shall be measured from the position vertically beneath the location of the light. 2. Vertical positioning and spacing of lights (a) On a power-driven vessel of 20 m of more in length the masthead lights shall be placed as follows: (i) the forwards masthead light, or if only one masthead light is carried, then that light, at a height above the hull of not less than 6 metres, and, if the breadth of the vessel exceeds 6 m, then at a height above the hull not less than such breadth, so however that the light need not be placed at a greater height above the hull than 12 m; (ii) when two masthead lights are carried the after one shall be at least 4.5 m vertically higher than the forward one. (b) The vertical separation of masthead lights of power-driven vessels shall be such that in all normal conditions of trim the after light will be seen over and separate from the forward ...
- 25. Rule 27 (Vessels not under command or restricted in their ability to manoeuvre)
- (Rule 27 (Vessels not under command or restricted in their ability to manoeuvre))
- (a) A vessel not under command shall exhibit: (i) two all-round red lights in a vertical line where they can best be seen; (ii) two balls or similar shapes in a vertical line where they can best be seen; (iii) when making way through the water, in addition to the lights prescribed in this paragraph, sidelights and a sternlight. (b) A vessel restricted in her ability to manoeuvre, except a vessel engaged in mine clearance operations, shall exhibit: (i) three all-round lights in a vertical line where they can best be seen. The highest and lowest of these lights shall be red and the middle light shall be white; (ii) three shapes in a vertical line where they can best be seen. The highest and lowest of these shapes shall be balls and the middle one a diamond; (iii) when making way through the water, a masthead light or lights, sidelights and a sternlight, in addition to the lights prescribed in subparagraph (i); (iv) when at anchor, in addition to the lights or shapes ...
- 26. Rule 19 (Conduct of vessels in restricted visibility)
- (Rule 19 (Conduct of vessels in restricted visibility))
- (a) This Rule applies to vessels not in sight of one another when navigating in or near an area of restricted visibility. (b) Every vessel shall proceed at a safe speed adapted to the prevailing circumstances and conditions of restricted visibility. A power-driven vessel shall have her engines ready for immediate manoeuvre. (c) Every vessel shall have due regard to the prevailing circumstances and conditions of restricted visibility when complying with the Rules of Section I of this Part. (d) A vessel which detects by radar alone the presence of another vessel shall determine if a close-quarters situation is developing and/or risk of collision exists. If so, she shall take avoiding action in ample time, provided that when such action consists of an alteration of course, so far as possible the following shall be avoided: (i) an alteration of course to port for a vessel forwards of the beam, other than for a vessel being overtaken; (ii) an alteration of course towards a vessel ...
- 27. Rule 12 (Sailing vessels)
- (Rule 12 (Sailing vessels))
- (a) When two sailing vessels are approaching one another, so as to involve risk of collision, one of them shall keep out of the way of the other as follows: (i) when each has the wind on a different side, the vessel which has the wind on the port side shall keep out of the way of the other; (ii) when both have the wind on the same side, the vessel which is to windward shall keep out of the way of the vessel which is to leeward; (iii) if a vessel with the wind on the port side sees a vessel to windward and cannot determine with certainty whether the other vessel has the wind on her port or starboard side, she shall keep out of the way of the other. (b) For the purposes of this Rule the windward side shall be deemed to be the side opposite to that on which the mainsail is carried or, in the case of a square-rigged vessel, the side opposite to that on which the largest fore-and-aft sail is carried.
- 28. Rule 7 (Risk of collision)
- (Rule 7 (Risk of collision))
- (a) Every vessel shall use all available means appropriate to the prevailing circumstances and conditions to determine if risk of collision exists. If there is any doubt such risk shall be deemed to exist. (b) Proper use shall be made of radar equipment if fitted and operational, including long-range scanning to obtain early warning of risk of collision and radar plotting or equivalent systematic observations of detected objects. (c) Assumptions shall not be made on the basis of scanty information, especially scanty radar information. (d) In determining if risk of collision exists the following considerations shall be among those taken into account: (i) such risk shall be deemed to exist it the compass bearing of an approaching vessel does not appreciably change; (ii) such risk may sometimes exist even when an appreciable bearing change is evident, particularly when approaching a very large vessel or a tow or when approaching a vessel at close range.
- 29. Rule 6 (Safe speed)
- (Rule 6 (Safe speed))
- Every vessel shall at all times proceed at a safe speed so that she can take proper and effective action to avoid a collision and be stopped within a distance appropriate to the prevailing circumstances and conditions. In determining a safe speed the following factors shall be among those taken into account: (a) By all vessels: (i) the state of visibility; (ii) the traffic density including concentrations of fishing vessels or any other vessels; (iii) the manoeuvrability of the vessel with special reference to stopping distance and turning ability in the prevailing conditions; (iv) at night the presence of background light such as from shore lights or from backscatter of her own lights; (v) the state of wind, sea and current, and the proximity of navigational hazards; (vi) the draught in relation to the available depth of water. (b) Additionally, by vessels with operational radar: (i) the characteristics, efficiency and limitations of ...
- 30. Rule 3 (General definitions)
- (Rule 3 (General definitions))
- ... to keep out of the way of another vessel. (g) The term "vessel restricted in her ability to manoeuvre" means a vessel which from the nature of her work is restricted in her ability to manoeuvre as required by these Rules and is therefore unable to keep out of the way of another vessel. The term "vessels restricted in their ability to manoeuvre" shall include but not be limited to: (i) a vessel engaged in laying, servicing or picking up a navigation mark, submarine cable or pipeline; (ii) a vessel engaged in dredging, surveying or underwater operations; (iii) a vessel engaged in replenishment or transferring persons, provisions or cargo while underway; (iv) a vessel engaged in launching or recovery of aircraft; (v) a vessel engaged in mine clearance operations; (vi) a vessel engaged in a towing operation such as severely restricts the towing vessel and her tow in their ability to deviate from their course. (h) The term "vessel constrained by her draught" means a power-driven ...
- 31. Rule 1 (Application)
- (Rule 1 (Application))
- (a) These Rules shall apply to all vessels upon the high seas and in all waters connected therewith navigable by seagoing vessels. (b) Nothing in these Rules shall interfere with the operation of special rules made by an appropriate authority for roadsteads, harbours, rivers, lakes or inland waterways connected with the high seas and navigable by seagoing vessels. Such special rules shall conform as closely as possible to these Rules. (c) Nothing in these Rules shall interfere with the operation of any special rules made by the Government of any State with respect to additional station or signal lights, shapes or whistle signals for ships of war and vessels proceeding under convoy, or with respect to additional station or signal lights or shapes for fishing vessels engaged in fishing as a fleet. These additional station or signal lights, shapes or whistles shall, so far as possible, be such that they cannot be mistaken for any light, shape or signal authorised elsewhere under these ...
- 32. Uporaba vseh razpoložljivih sredstev za ugotavljanje nevarnosti trčenja
- (/Pravilo 7 (Rizik Sudara) - България)
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