Collision at Traffic Separation Scheme

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• Collision at Traffic Separation Scheme
• Case Study
• ITOSF 7th Seminar
• Bernhard Schulte
  Shipmanagement (Singapore) Pte Ltd

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Synopsis

• A 46000 DWT product tanker, while proceeding east
  bound through Caofeidian Traffic Separation
  Scheme in ballast had a collision with a dry
  cargo vessel. The incident occurred at 0348 hours
  on 11 Sep 2010. For the purpose of this
  presentation these vessels will be called MT Own
  Vessel and MV Other Vessel respectively.

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Event Summary

• 09 Sep 2010
• Product tanker MT Own Vessel arrived at
  Tianjin, China to discharge Jet A-1 cargo and
  was safely berthed alongside.
• 10 Sep 2010
• Upon completion of discharge operation MT Own
  Vessel was prepared to proceed in ballast
  condition towards Dalian, China for next voyage
  orders. She was drawing 5.50 m forward and 7. 10
  m aft. Pre-departure meeting was held and her
  steering gears, bridge controls and main engine
  were tried out before pilot boarding. At 2354
  hours pilot boarded and Master/ Pilot information
  were exchanged.

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Event Summary

• 11 Sep 2010
• 0012 MT Own Vessel safely cast off from the
  berth and proceeded outbound.
• 0200 The pilot disembarked
• 0206 The main engine was put to Full Ahead, at
  maneuvering RPM. The vessel was on hand steering.
  The bridge team comprised of the Master, an OOW
  (the 3/O) and an AB.
• 0040 The 2/O relived the 3/O.

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• Event Summary
• 11 Sep 2010
• 0300 MT Own Vessel came out of Tianjin VTS.
  Weather was recorded as light air, rippled sea
  and horizontal visibility of 5 miles. A number
  of vessels were in the vicinity, some of which
  were joining in/ coming out of Caofeidian TSS.
  Both the RADAR/ ARPA were in operation.
• 0320 Master handed over con to the 2/O.
• 0335 Master retired on the settee behind the
  chart table curtain in the wheel house.

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Development of Close-Quarter Situation

• 11 Sep 2010
• 0330 MT Own Vessel altered course to 098T to
  join the east bound lane of Caofeidian Traffic
  Separation Scheme while MV Other Vessel was on
  the west bound lane heading 278T at a distance
  of 4.2 miles, about 3 points on the port bow of
  Own Vessel.
• MV Other Vessel altered course to 264T.
• MT Own Vessel and MV Other Vessel were making
  about 8.5 and 11.5 knots over the ground
  respectively.

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0340 MV Other Vessel altered to port,
reversing heading towards the east bound lane.
She was still not tracked on ARPA by the Own
Vessel. Speed of Other Vessel fell to about
9.5 knots, while Own Vessel continued at 8.5
knots.
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0350 MV Other Vessel altered course hard to
starboard at a distance of 0.8 miles, on 3 points
on the port bow of MT Own Vessel developing a
close quarter situation.
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• 0351 MT Own Vessel was brought to hand
  steering and 10 port helm was given while MV
  Other Vessel was found continued turning to
  starboard.

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• 0352 The 2/O of Own Vessel called the Master.
  At the time MV Other Vessel was fine on
  starboard bow of Own Vessel at about 6 cables
  off and flashing at Own Vessel by a day-light
  signalling (Aldis) lamp.

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• 0353 The Master of MT Own Vessel reached the
  conning position and the port sidelight of MV
  Other Vessel was clearly seen. The Master of
  Own Vessel ordered helm hard to port and the
  wheel was put 35 to port.

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• 0354 The wheel of Own Vessel was reversed to
  hard starboard followed by a series of subsequent
  orders to port and starboard to avoid/ minimize
  the impact with Other Vessel and engine of Own
  Vessel was put to Dead Slow Ahead.

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• MV Other Vessel made the first contact with
  Own Vessel in the way of forecastle starboard
  side. At the time of the first contact Own
  Vessel and Other Vessel were on Nly and NWly
  heading respectively. Immediately after the first
  impact Other Vessel sheered off while Own
  Vessel still swinging to port and Other Vessel
  swinging to starboard.

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• 0355 The engine of MT Own Vessel was put to
  Full Astern and MV Other Vessel made the second
  contact in way of 1 (S) FO tank, on starboard
  side, abaft the accommodation break of Own
  Vessel. Immediately after the second contact the
  engine of Own Vessel was stopped.

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• 0356 Both the vessels swung clear of each other
  without any further contact. MV Other Vessel
  continued making way and crossed ahead of MT Own
  Vessel. None reported any injury, pollution or
  immediate danger. Hull integrity of both the
  vessels were apparently intact and they proceeded
  on own power for safe anchorage.

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Causal Factor Flow Chart
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• What we learnt ???
• continue reiterating
• three old clues

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• Clue - 1
• Proper look out Proper look out Proper look out
• Proper look out Proper look out Proper look out
• Proper look out Proper look out Proper look out
• Proper look out Proper look out Proper look out
• Proper look out Proper look out Proper look out
• Proper look out Proper look out Proper look out
• Proper look out Proper look out roper look out
• Proper look out Proper look out Proper look out
• Proper look out Proper look out Proper look out

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Clue - 2

• Refreshing the fundamentals of Collreg
• Refreshing the fundamentals of Collreg
• Refreshing the fundamentals of Collreg
• Refreshing the fundamentals of Collreg
• Refreshing the fundamentals of Collreg
• Refreshing the fundamentals of Collreg
• Refreshing the fundamentals of Collreg
• Refreshing the fundamentals of Collreg

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Clue - 3

• Practicing the common bridge procedures
• Practicing the common bridge procedures
• Practicing the common bridge procedures
• Practicing the common bridge procedures
• Practicing the common bridge procedures
• Practicing the common bridge procedures
• Practicing the common bridge procedures
• Practicing the common bridge procedures

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• Thank You