The Swedish Club in its Monthly safety scenario discusses about a river collision.
The Incident
It was the middle of the night and vessel A, a 6,500 TEU container vessel, was sailing out from a port in a busy river with a pilot conning the vessel. The weather was fine, with clear skies and winds around Beaufort scale 6. All navigation equipment on vessel A was in good working order except for the AIS transceiver, which was not working.
Vessel A was on an easterly course in the outbound deep-water channel of the river fairway. Vessel B was proceeding on a reciprocal course in the inbound fairway of the river. The vessels were in sight of each other. The Master, Chief Officer, lookout, helmsman and the pilot were on the bridge of vessel A.
Underestimated weather conditions
Vessel B, a Handymax bulk carrier, then reduced speed in order to time arrival for its berth. However, the bridge team on vessel B underestimated the impact of the wind and current, and the vessel was set towards the outbound fairway and her heading altered to port and towards vessel A. This caused vessel B to enter the outbound fairway.
No room for manoeuvre
Vessel A was sailing in the fairway of the extended deep-water channel but towards the centreline between the inbound and outbound fairway. The bridge team saw that vessel B had slowed down and that her heading was changing towards them. There was some room for vessel A to turn to starboard and still remain in the fairway, but it was limited. The vessels were approaching each other, and vessel A was not able to turn to starboard and clear vessel B and still remained in the fairway.
An attempt to communicate
The pilot on vessel A flashed the signal lamp and called vessel B on the VHF but vessel B did not respond. The pilot ordered full astern and tried to alter course to starboard with the bow thruster. This did not prevent the collision. The Master on vessel A saved the VDR data after the accident. There were no injuries or pollution.
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Source: The Swedish Club
