A vessel intending to overtake another in a narrow channel or fairway on her starboard side
-
Description of scenario:
Vessel A: power-driven vessel
Vessel B: power-driven vessel
Area: Narrow channel
Vessel A is intending to overtake vessel B on her starboard side -
Rule(s) to be applied:
Rule 9
(Narrow channels
)
Rule 13 (Overtaking)
Rule 34 (Manoeuvring and warning signals) -
Applying the Rule(s) and comments:
In accordance with Rule 9
(e)(i) (Narrow channels
), in a narrow channel
or fairway when overtaking can take place only if the vessel to be overtaken (vessel B) has to take action to permit safe passing, the vessel intending to overtake (vessel A) shall indicate her intention by sounding the appropriate signal prescribed in Rule 34
(c)(i) (Manoeuvring and warning signals).
In accordance with Rule 34 (c)(i) (Manoeuvring and warning signals), vessel intending to overtake (vessel A) another (vessel B) shall indicate her intention by the following signals on her whistle:
- two prolonged blasts followed by one short blast to mean “I intent to overtake you on your starboard side”.
In accordance with Rule 9 (e)(i) (Narrow channels ), the vessel to be overtaken (vessel B) shall, if in agreement, sound the appropriate signal prescribed in Rule 34 (c)(ii) (Manoeuvring and warning signals) and take steps to permit safe passing.
In accordance with Rule 34 (c)(ii) (Manoeuvring and warning signals), the vessel about to be overtaken (vessel B) shall indicate her agreement by the following signal on her whistle:
- one prolonged, one short, one prolonged and one short blast in that order.
In accordance with Rule 9 (e)(i) (Narrow channels ) the vessel to be overtaken (Vessel B) if in doubt as to the intention of crossing vessel (Vessel A), may sound the signals prescribed in Rule 34 (d) (Manoeuvring and warning signals).
In accordance with Rule 34 (d) (Manoeuvring and warning signals), if the vessel to be overtaken (Vessel B) did not understand the intentions or actions of overtaking vessel (Vessel A), or is in doubt whether sufficient action is being taken by overtaking vessel (Vessel A) to avoid collision, overtaken vessel (Vessel B) shall immediately indicate such doubt by giving at least five short and rapid blasts on the whistle. Such signal may be supplemented by a light signal of at least five short and rapid flashes.
In accordance with Rule 9 (e)(ii) (Narrow channels ), Rule 9 (Narrow channels ) does not relieve the overtaking vessel (Vessel A) of her obligation under Rule 13 (Overtaking).
In accordance with Rule 13 (a) (Overtaking) any vessel overtaking (vessel A) any other shall keep out the way of the vessel being overtaken (vessel B).
- Bird’s-eye view:
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- Bridge view (from vessel A):
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- Radar screen view (on vessel A):
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- ECDIS view:
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