Samuel Risley icebreaker arrives at Port of Thunder Bay The coast guard says she'll help the last ships of the season move about within the harbour. Dec 29, 2020 7:59 AM By: TbNewsWatch.com Staff THUNDER BAY — The Canadian Coast Guard icebreaker Samuel Risley has arrived in the port of Thunder Bay. The Risley remained docked at Keefer Terminal on Monday afternoon. Although she may not have a lot of work to do on this assignment, some ice has formed in the Thunder Bay area, and the late-season push is on to move as much grain as possible out of local elevators before the locks at Sault Ste. Marie close on Jan. 15.