Octopus Harald - Marine Accident Investigation Branch

More documents

Recommendations

Info

2.7 CRUISE SHIPS AND OTHER DEEP DRAUGHT VESSELSFor a cruise vessel to call into Kirkwall, from either the east or west, it must passthrough an area for which the chart is reliant on a 19 th Century leadline survey as itsdata source.The recent increase in size, draught and number of cruise vessels transiting areas of19th Century leadline survey is of concern. Had one of these deeper draught cruisevessels chosen to route west of Little Green Holm Island, the consequences could havebeen catastrophic.The increase in renewable and offshore traffic operating in the Orkney Islands alsoincreases the likelihood of previously uncharted hazards posing a risk to navigation.28
SECTION 3 – CONCLUSIONSThe following safety issues have been highlighted by this investigation. They are not listed inany order of priority.3.1 SAFETY ISSUES DIRECTLY CONTRIBUTING TO THE ACCIDENT WHICHHAVE RESULTED IN RECOMMENDATIONS• Melbourne <strong>Marine</strong> Services• The tug skipper and the tow master relied upon 19 th Century leadline surveyedcharts for the passage of a deep draught vessel outside of a recognised trafficroute. [2.4.1, 2.4.4]• The passage plan and execution underestimated the effect of tidal stream onthe tug and tow. [2.4.2, 2.4.6]• Surveys• Depths that are significantly less than charted might exist around the UKcoastline. The hazard of the bank was not identified as this was not charted.[2.4.2]3.2 SAFETY ISSUES IDENTIFIED DURING THE INVESTIGATION ALSOLEADING TO RECOMMENDATIONS• An increase in commercial activity, particularly of large cruise vessels, is noted inthe Orkney Islands. [2.4.4]• Electronic charts• The significance of CATZOC is not fully understood by many operators. [2.6]• The use of CATZOC is an ECDIS menu option and is therefore not immediatelyavailable to the navigator. [2.6]• CATZOC is unavailable on many unapproved ECS and chart plotters. [2.6]SECTION 4 - ACTION TAKENNone29
Page 1 and 2: Report on the investigation of the
Page 3 and 4: CONTENTSGLOSSARY OF ABBREVIATIONS A
Page 5 and 6: IHMC - International Hydrographic M
Page 7 and 8: SYNOPSISThe jack-up barge Octopus w
Page 9 and 10: 1.2 PARTICULARS OF OCTOPUS AND ACCI
Page 11 and 12: 1.3.2 The voyageAt 1300 on 8 Septem
Page 13 and 14: Figure 5Octopus agroundOctopus refl
Page 16 and 17: Figure 7Admiralty Chart 2250 before
Page 18 and 19: Reproduced from Admiralty Chart 225
Page 20 and 21: Figure 10MCA Survey following groun
Page 22 and 23: 1.6.3 Category of Zone of Confidenc
Page 24 and 25: 1.7.3 ResearchIn 1997, the Departme
Page 26 and 27: 1.7.6 CHP survey effortAll survey w
Page 28 and 29: 1.8 INTERNATIONAL HYDROGRAPHIC ORGA
Page 30 and 31: SECTION 2 - ANALYSIS2.1 AIMThe purp
Page 32 and 33: 2.4.5 Decision to divert west of Li
Page 36: SECTION 5 - RECOMMENDATIONS2007/165

Octopus Harald - Marine Accident Investigation Branch

Create successful ePaper yourself

Delete template?

Save as template?