MARINE INVESTIGATION REPORT M16P0378 Grounding and subsequent sinking Articulated tug-barge Tug Nathan E. Stewart and tank barge DBL 55 Seaforth Channel, 10 nm west of Bella Bella, British Columbia 13 October 2016 Transportation Safety Board of Canada Place du Centre 200 Promenade du Portage, 4th floor Gatineau QC K1A 1K8 819-994-3741 1-800-387-3557 www.tsb.gc.ca
[email protected] © Her Majesty the Queen in Right of Canada, as represented by the Transportation Safety Board of Canada, 2018 Marine investigation report M16P0378 Cat. No. TU3-7/16-0378E-PDF ISBN 978-0-660-26194-2 This report is available on the website of the Transportation Safety Board of Canada at www.tsb.gc.ca Le présent rapport est également disponible en français. The Transportation Safety Board of Canada (TSB) investigated this occurrence for the purpose of advancing transportation safety. It is not the function of the Board to assign fault or determine civil or criminal liability. Marine Investigation Report M16P0378 Grounding and subsequent sinking Articulated tug-barge Tug Nathan E. Stewart and tank barge DBL 55 Seaforth Channel, 10 nm west of Bella Bella, British Columbia 13 October 2016 Summary On 13 October 2016, shortly after 0100 Pacific Daylight Time, the articulated tug-barge composed of the tug Nathan E. Stewart and the tank barge DBL 55 went aground on Edge Reef near Athlone Island, at the entrance to Seaforth Channel, approximately 10 nautical miles west of Bella Bella, British Columbia. The tug’s hull was eventually breached and approximately 110 000 L of diesel oil were released into the environment.