Vessel Collision Case Study 1

two boats are operating in the same general area. who is responsible for avoiding a collision?
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Ok the incident happened in the Arak Oh straight which connects the port of nagoya in Japan to the open sea the straight has a buoyed channel with two light boys marking its center line positioned on the heading of 133 degrees the incident happened at night when there was good visibility and moderate weather at a time of 13 minutes before can didnt c minus 13 ship em crossed the center line of the channel into the opposite lane at a time of 11 minutes before collision c minus 11 ship em were still steady on the course of 123 degrees and positioned clearly in the opposite lane at a time of 6 minutes before collision c minus 6 ship them sees the red side light of ship ji at a bearing of 6 27 degrees on her starboard bow and ship ji is in a position to see the green side light of ship em at a bearing of 5 to 6 degrees on her port bow as a time of two minutes before collision c- to ship ji sounded five short blasts and flash the oldest light of the other ship both ships kept their course and speeds hmm hmm hmm at a time of 1.5 minutes before collision c minus 1.5 shivji sounded one short blasts put the rudder hard to starboard and ordered half a head speed while ship em sounded too short blasts and put the rudder hard to port hmm at a time of one minute before collision c minus one ship ji ordered full speed ahead while ship em were still turning to port a time of collision ship ji is turning starboard

with a speed of between 15 to 17 knots when ship em ordered full speed astern the bow of ship ji struck ship em on the starboard side in the vicinity of cargo hold number one and at an angle of about 45 degrees ship em sustained considerable damage but both ships remained afloat and there was no loss of life in your opinion which vessel violated which rule click on the buttons for a quick overview of the relevant rules for all six safe speed rule 8 action to avoid collision roll nine narrow channels rule 10 traffic separation schemes rule 14 head-on situation rule 15 crossing situation rolled 17 action by stand on vessel type your answer in the space below click dumb print button to lock your answer extract from 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 will be stopped within a distance appropriate to the prevailing circumstances and conditions extract from rule 8 Action too collision a any action to avoid collision shall be taken in accordance with the rules of this part and if the circumstances of the case admit b+ made an ample time and with due regard to the observance of good seamanship extract from rule mine narrow channels the vessel proceeding along the course of a narrow channel or fairway shall keep as near to the outer limit of the channel of fairway which lies on her starboard side as is safe and practical ball extract rule 10 traffic separation schemes a vessel using a traffic separation scheme shall one proceed in the

appropriate traffic lane in the general direction of traffic flow for that Lane two so far as practicable keep clear of traffic separation line or separation zone and three normally join or leave a traffic lane at the termination of the lane but when joining or leaving from either side shall do so at a small an angle to the general direction of traffic flow as practicable extract from rule 14 head-on situation when to power-driven vessels are meeting on reciprocal orly reciprocal courses so as to involve risk of collision each shelter her course to starboard so that each pulse on the port side of the other extract from rule 15 crossing situation when to power-driven vessels are crossing so as to involve risk of collision the vessel which has the other on her starboard side shall keep out of the way and shall of the circumstances of the case admit avoid crossing ahead of the other vessel extract from ruled 17 action by stand on vessel where one of two vessels is to keep out of the way the others will keep her course and speed the latter vessel may however take action to avoid collision by her maneuver 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 compliance with these rules 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 gift way vessel alone she shall take such action as well best eight to avoid collision ship em was steering a course of about

10 degrees to port of a direct course along the channel and therefore she was a ship proceeding along the channel in the opposite direction to that of ship ji rather than a ship crossing the channel or straight and therefore the crossing rule under the collision regulations did not apply similarly there was no stand on vessel with an obligation to keep her course and speed until the two ships were so close to each other that a collision could not be avoided by the action of one vessel alone on the contrary both ships were free to alter either their course or speed and keep to the starboard side of the fairway in accordance with rule mine and the principles of good seamanship at any time in order to avoid collision additionally the principal aspects related to establishing what is considered a safe speed were not observed em was at fault in four main respects hey setting a course of 123 degrees which took her over to her wrong side of the channel be leaving its much too late to take avoiding action to avoid a collision see keeping a poor look out when approaching each other shivji was observed showing her masthead lights a little open to starboard and her red sidelight clearly visible d finally when finally taking action to avoid a collision putting the wheel hard to port instead of hard to starboard all these faults were fundamental to the cause of the collision ship ji was at fault for not reducing speed by stopping her engines or at least reducing speed too slow ahead not later than when the ships were about two miles apart

conduct of vessels in any condition of visibility, Overtaking Rule 13, Head-on situation Rule 14, Responsibilities between Vessels, Conduct of vessels in res…
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