File:Samuel Risley moored on the Detroit River.jpg

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Built in 1985, the CCGS Samuel Risley does icebreaking duties and buoy tending. Her home port is Parry Sound, ON. During the last week of December, 2010 the Risley has been stationed out of Dieppe (Windsor waterfront, ON), monitoring the Detroit River for the amount of ice coming in off of Lake St Clair.
Large pans of sheet ice (several inches thick) come in off of Lake St Clair and travel down the Detroit River. Along its 32 mile length, the river ranges from 1/3 to 4 miles wide. In wider stretches (like the one shown in details) the ice is not a problem, but around the 21 islands and river bends, and in the narrower dredged channels the pans jam up and can freeze solid if not cleared.
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Source http://images.maritimehistoryofthegreatlakes.ca/65700/data
Author Diane Bedard

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This file is licensed under the Creative Commons Attribution 2.5 Canada license.
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This file, which was originally posted to http://images.maritimehistoryofthegreatlakes.ca/65700/data, was reviewed on 13 November 2011 by reviewer Denniss, who confirmed that it was available there under the stated license on that date.

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current17:21, 12 November 2011Thumbnail for version as of 17:21, 12 November 20111,600 × 1,067 (500 KB)Geo Swan (talk | contribs){{Information |Description= Original caption: :''Built in 1985, the CCGS Samuel Risley does icebreaking duties and buoy tending. Her home port is Parry Sound, ON. During the last week of December, 2010 the Risley has been stationed out of Dieppe (Windso

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