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Extract of IRPCS*

rules to be implemented by

holders of

RYA

Powerboat certificates

*International Rules for Prevention of Collision at Sea.


 

The Rules of the Road.... 3

Rules 5 & 6 (Powerboat Level 1.) 3

Rule 5      Look-out 3

Rule 6      Safe Speed  3

Rules 5,7,8,9, 12-19  (Powerboat Level 2:) 4

Rule 7      Risk of Collision  4

Rule 8      Action to Avoid Collision  5

Rule 9      Narrow Channels  6

Rule 12    Sailing Vessels  7

Rule 13    Overtaking  7

Rule 14    Head-on Situation  8

Rule 15    Crossing Situation  8

Rule 16    Action by Give-way Vessel 8

Rule 17    Action by Stand-on Vessel 8

Rule 18    Responsibilities Between Vessels  9

Rule 19    Conduct of Vessels in Restricted Visibility  10

Rule 23 (Intermediate Powerboat) 11

Rule 23    Power-driven Vessels Underway  11

N.B. Advanced powerboat certificate holders are required to implement all of the International Rules for Prevention of Collision at Sea. 11

The IRPCS rules in their entirety are NOT included in this EXTRACT

CLICK HERE FOR FULL VERSION

 


The Rules of the Road

 Rules 5 & 6 (Powerboat Level 1.)

 

Rule 5         Look-out

Every vessel shall at all times maintain a proper look-out by sight as well as by hearing as well as by all available means appropriate in the prevailing circumstances and conditions so as to make a full appraisal of the situation and of the risk of collision.

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 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:

o        (i)The state of visibility;

o        (ii) The traffic density including concentrations of fishing vessels or any other vessels;

o        (iii) The manageability of the vessel with special reference to stopping distance and turning ability in the prevailing conditions;

o        (iv) At night the presence of background light such as from shore lights or from back scatter from her own lights;

o        (v) The state of wind, sea and current, and the proximity of navigational hazards;

o        (vi) The draft in relation to the available depth of water.

·         (b) Additionally, by vessels with operational radar:

o        (i) The characteristics, efficiency and limitations of the radar equipment;

o        (ii) Any constrains imposed by the radar range scale in use;

o        (iii) The effect on radar detection of the sea state, weather and other sources of interference;

o        (iv) The possibility that small vessels, ice and other floating objects may not be detected by radar at an adequate range;

o        (v) The number location and movement of vessels detected by radar;

o        (vi) The more exact assessment of the visibility that may be possible when radar is used to determine the range of vessels or other objects in the vicinity.


Rules 5,7,8,9, 12-19  (Powerboat Level 2:) 

(This assumes Rule 6 can be implemented from level 1.or equivalent training) 

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 observation 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 if 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.


Rule 8         Action to Avoid Collision

(a)Any action taken to avoid collision shall, if the circumstances of the case admit, be positive, made in ample time and with due regard to the observance of good seamanship.

(b) Any alteration of course and/or speed to avoid collision shall, if the circumstances of the case admit be large enough to be readily apparent to another vessel observing visually or by radar;

a succession of small alterations of course and/or speed shall be avoided.

(c) If there is sufficient sea room, alteration of course alone may be the most effective action to avoid a close-quarters situation provided that it is made in good time, is substantial and does not result in another close-quarters situation.

(d) Action taken to avoid collision with another vessel shall be such as to result in passing at a safe distance. The effectiveness of the action shall be carefully checked until the other vessel is finally past and clear.

(e) If necessary to avoid collision or allow more time to asses the situation, a vessel may slacken her speed or take all way off by stopping or reversing her means of propulsion.

(f)(i) A vessel which, by any of these rules, is required not to impede the passage or safe passage of another vessel shall when required by the circumstances of the case, take early action to allow sufficient sea room for the safe passage of the other vessel.

·         (ii) A vessel required not to impede the passage or safe passage of another vessel is not relieved of this obligation if approaching the other vessel so as to involve risk of collision and shall, when taking action, have full regard to the action, which may be required by the rules of this part.

·         (iii) A vessel the passage of which is not to be impeded remains fully obliged to comply with the rules of this part when the two vessels are approaching one another so as to involve risk of collision.


Rule 9         Narrow Channels

(a) A vessel proceeding along the course of a narrow channel or fairway shall keep as near to the outer limit of the channel or fairway, which lies on her starboard side as, is safe and practicable.

(b) A vessel of less than 20 meters in length or a sailing vessel shall not impede the passage of a vessel, which can safely navigate only within a narrow channel or fairway.

(c) A vessel engaged in fishing shall not impede the passage of any other vessel navigating within a narrow passage or fairway.

(d) A vessel shall not cross a narrow passage or fairway if such crossing impedes the passage of a vessel, which can safely navigate only within such channel or fairway. The latter vessel may use the sound signal prescribed in Rule 34(d) if in doubt as to the intention of the crossing vessel.

(e)

·         (i) In a narrow channel or fairway when overtaking can take place only when the vessel to be overtaken has to take action to permit safe passing, the vessel intending to overtake shall indicate her intention by sounding the appropriate signal prescribed in Rule 34(c)(i). The vessel to be overtaken shall, if in agreement, sound the appropriate signal prescribed in Rule 34(c)(ii) and take steps to permit safe passing. If in doubt she may sound the signals prescribed in Rule 34(d).

·         (ii) This rule does not relieve the overtaking vessel of her obligation under Rule 13.

(f) A vessel nearing a bend or an area of a narrow channel or fairway where other vessels may be obscured by an intervening obstruction shall navigate with particular alertness and caution and shall sound the appropriate signal prescribed in Rule 34(e).

(g) Any vessel shall, if the circumstances of the case admit, avoid anchoring in a narrow channel.


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 of them 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 the 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 the port or the 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 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.

Rule 13        Overtaking

(a) Notwithstanding anything contained in the Rules of Part B, Sections I and II, any vessel overtaking any other shall keep out of the way of the vessel being overtaken.

(b) A vessel shall be deemed to be overtaking when coming up with a another vessel from a direction more than 22.5 degrees abaft her beam, that is, in such a position with reference to the vessel she is overtaking, that at night she would be able to see only the stern light of that vessel but neither of her sidelights.

(c) When a vessel is in any doubt as to whether she is overtaking another, she shall assume that this is the case and act accordingly.

(d) Any subsequent alteration of the bearing between the two vessels shall not make the overtaking vessel a crossing vessel within the meaning of these Rules or relieve her of the duty of keeping clear of the overtaken vessel until she is finally past and clear.


Rule 14        Head-on Situation

(a) When two power-driven vessels are meeting on reciprocal or nearly reciprocal courses so as to involve risk of collision each shall alter her course to starboard so that each shall pass on the port side of the other.

(b) Such a situation shall be deemed to exist when a vessel sees the other ahead or nearly ahead and by night she could see the masthead lights in line or nearly in line and/or both sidelights and by day she observes the corresponding aspect of the other vessel.

(c) When a vessel is in any doubt as to whether such a situation exists she shall assume that it does exist and act accordingly.

Rule 15        Crossing Situation

When two power-driven vessels are crossing so as to involve risk of collision, the vessel which has the other on her own starboard side shall keep out of the way and shall, if the circumstances of the case admit, avoid crossing ahead of the other vessel.

Rule 16        Action by Give-way Vessel

Every vessel which is directed to keep out of the way of another vessel shall, so far as possible, take early and substantial action to keep well clear.

Rule 17        Action by Stand-on Vessel

(a)

·         (i) Where one of two vessels is to keep out of the way of the other shall keep her course and speed.

·         (ii) The latter vessel may however take action to avoid collision by her manoeuvre alone, as soon as it becomes apparent to her that the vessel required to keep out of the way is not taking appropriate action in accordance with these Rules.

(b) When, from any cause, the vessel required to keep her course and speed finds herself so close that collision cannot be avoided by the action of the give-way vessel alone, she shall take such action as will best aid to avoid collision.

(c) A power-driven vessel which takes action in a crossing situation in accordance with subparagraph (a)(ii) of this Rule to avoid collision with another power-driven vessel shall, if the circumstances of the case admit, not alter course to port for a vessel on her own port side.

(d) This Rule does not relieve the give-way vessel of her obligation to keep out of the way.

 

Rule 18        Responsibilities Between Vessels

Except where rule 9, 10, and 13 otherwise require:

(a)A power driven vessel underway shall keep out of the way of:

·         (i)a vessel not under command;

·         (ii)a vessel restricted in her ability to maneuver;

·         (iii)a vessel engaged in fishing;

·         (iv)a sailing vessel;

(b) A sailing vessel under way shall keep out of the way of:

·         (i)a vessel not under command;

·         (ii)a vessel restricted in her ability to manoeuvre;

·         (iii)a vessel engaged in fishing;

(c)A vessel engaged in fishing when underway shall, so far as possible, keep out of the way of:

·         (i)a vessel not under command;

·         (ii)a vessel restricted in her ability to manoeuvre.

(d)

·         (i)Any vessel other than a vessel not under command or a vessel restricted in her ability to manoeuvre shall, if the circumstances of the case admit, avoid impeding the safe passage of a vessel constrained by her draft, exhibiting the signals in Rule 28.

·         (ii) A vessel constrained by her draft shall navigate with particular caution having full regard to her special condition.

(e) A seaplane on the water shall, in general, keep well clear of all vessels and avoid impeding their navigation. In circumstances, however, where risk of collision exists, she shall comply with the Rules of this Part.


 

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 condition 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 in course, so far as possible the following shall be avoided:

·         (i) An alteration of course to port for a vessel forward of the beam, other than for a vessel being overtaken;

·         (ii) An alteration of course toward a vessel abeam or abaft the beam.

(e) Except where it has been determined that a risk of collision does not exist, every vessel which hears apparently forward of her beam the fog signal of another vessel, or which cannot avoid a close-quarters situation with another vessel forward of her beam, shall reduce her speed to be the minimum at which she can be kept on her course. She shall if necessary take all her way off and in any event navigate with extreme caution until danger of collision is over.

 

Rule 23 (Intermediate Powerboat) 

(This assumes Rules5, 6,7,8,9 12-19 can be implemented from levels 1.and 2.or equivalent training)

Rule 23        Power-driven Vessels Underway

(a)A power-driven vessel underway shall exhibit:

·         (i) a masthead light forward;

·         (ii) a second masthead light abaft of and higher than the forward one;

except that a vessel of less than 50 meters in length shall not be obliged to exhibit such a light but may do so;

·         (iii) Sidelights: and

·         (iv) a stern light.

(b) An air-cushion vessel when operating in non-displacement mode shall, in addition to the lights prescribed in paragraph (a) of this Rule, exhibit an all-round flashing yellow light.

(c)

·         (i) A power-driven vessel of less than 12 meters in length may in lieu of the lights prescribed in paragraph (a) of this Rule exhibit an all-round white light and sidelights.

·         (ii) a power-driven vessel of less than 7 meters 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.

·         iii) the masthead light or all-round white light on a power-driven vessel of less than 12 meters in length may be displaced from the fore and aft Centreline of the vessel if Centreline fitting is not practicable, provided the sidelights are combined in one lantern which shall be carried on the fore and aft Centreline of the vessel or located as nearly as practicable in the same fore and aft line as the masthead light or all-round white light.

N.B. Advanced powerboat certificate holders are required to implement all of the International Rules for Prevention of Collision at Sea.

The IRPCS rules in their entirety are NOT included in this EXTRACT

Advanced powerboat candidates must obtain a FULL copy of the rules.


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