Letter Report on a Technical Peer Review of the Buzzards Bay Risk Assessment (2013) / Chapter Skim
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Pages 58-59
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From page 58... ...
58 Enclosure G Description of Escort Tugs and How They Are Used Mission-specific enhanced performance escort tugs were first introduced as a vessel type after the Exxon Valdez oil spill. Before the spill, escort in Prince William Sound, Alaska, was done by conventional twin-screw tugs; tanker escort in Puget Sound involved a combination of conventional and moderate-horsepower tractor tugs.
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From page 59... ...
59 barge is not used. The service is required by the state of Massachusetts and by USCG regulations as found in 33 CFR § 165.100, which indicate that, when the primary tug has a nonredundant propulsion system, the barge "must be accompanied by an escort tug of sufficient capability to promptly push or tow the tank barge away from danger of grounding or collision.
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