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The ''Ottawa'' was a tugboat that sank in Lake Superior off the coast of Russell, Bayfield County, Wisconsin. The wreckage site was added to the National Register of Historic Places in 1992.〔(【引用サイトリンク】title=Ottawa (Tug) Shipwreck Site )〕 ==History== ''Ottawa'', originally named ''Boscobel'', was built in Chicago, Illinois. It was the largest tug ever built in Chicago at the time and remained the largest and most powerful tug on the Great Lakes until its sinking in 1909.〔(【引用サイトリンク】title=Service History )〕 Originally the boat was used for rafting logs on Lake Michigan, but in 1901 was bought (and renamed) by the ''Reid Wrecking Company'', based in Sarnia, Ontario. On November 13, 1909, a steamboat passing the Apostle Islands became stranded on a shoal two miles off of Outer Island during a storm. The ship's first mate and other members of the crew launched the lifeboat and went to land in order to get help. Four vessels tried for a week to aid the steamboat. Eventually, three more vessels, including ''Ottawa'', were dispatched to the scene. On November 29, they were finally able to free the steamboat.〔(【引用サイトリンク】title=Final Voyage page 1 )〕 That evening, the ''Ottawa''s crew ate dinner and retired to bed. Less than 30 minutes later, they were woken by a fire that was already out of control.〔(【引用サイトリンク】title=Final Voyage page 2 )〕 ''Ottawa'' was pushed away from the steamboat that they had earlier rescued by the other vessels in efforts to stop the spread of fire and another tugboat was sent to help ''Ottawa''. Despite the efforts, ''Ottawa'' burned to the waterline and sank. The cause of the fire remains unknown. Theories include that the fire was a result of spontaneous combustion in the ship's coal bunkers, which contained 130 tons of fuel. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Ottawa (shipwreck)」の詳細全文を読む スポンサード リンク
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