Thunder Bay {3}

Thunder Bay {3}


Thunder Bay on the Welland Canal, September 11, 2014. Photo by Roger LeLievre


Build Information

Year Built: 2013

Builder: Chengxi Shipyard, Jiangyin, Jiangsu, China

Hull #CX9302

Registry: CAN. 836913

IMO #9601039

Laid Down: —

Launch Date: —

Commissioned: July 30, 2013


The Thunder Bay was constructed as a self-unloading bulk carrier for Canada Steamship Lines. She is built to the maximum allowable dimensions for the Seaway. 

The Thunder Bay {3} was the second of CSL’s Trillium Class ships to be constructed, being one of four self-unloading sisters. The Trillium class ships featured highly automated systems and greater fuel efficiency and capacity than their other CSL fleetmates. Her sisters were the Baie St. Paul {2}, Whitefish Bay {2}, and Baie Comeau {2}, and the gearless Trillium vessels CSL Welland and CSL St-Laurent.

Her self-unloading equipment consists of a dual hold belt leading to an aft loop-belt system to a 260′ deck-mounted boom.


  • Upgraded to Nova Scotia Class Certification, Bay Shipbuilding, Sturgeon Bay, Wisconsin, 2020.

General Stats

Length Overall: 739’10”

Length Between Perpendiculars: 730’04”

Breadth: 77’11”

Depth: 48’05”

Loaded Draft: 29’06”

Capacity: 37,690 Tons

Vessel Type: Loop-Belt Self-Unloader

Self-Unloading Boom Length: Aft-Mounted; 259’02”

Number of Cargo Holds: 5 [Hatch-Hold Arrangement: 5-5-5-5-5]

Number of Hatches: 25 [Dimensions: 57’04”x11’07”]

Primary Operations: Ore, Coal, Stone, Grain, Salt Trades

Propellers: 1 Controllable Pitch Propeller

Rudders: 1

Engineering Equipment



Engine Type: Diesel Engine

Engine Manufacturer: M.A.N B&W, Kien, Germany

Engine Model: 6S50ME-B9; 6-Cylinder, slow speed

Number of Engines: 1

Rated HP: 11,729 BHP



Thunder Bay – 2013-Present

Owner: Canada Steamship Lines, Montreal, QC

Operator: Canada Steamship Lines

Flag: Canada

Home Port: Montreal, QC

Her Story

The Thunder Bay was constructed in 2013 as the second member of the Trillium Class ship for Canada Steamship Lines. The Thunder Bay was the second of 6 Trillium class ships constructed and the second of four self-unloading Trillium class ships. She was christened Thunder Bay on June 11, 2012, being completed on May 25, 2013, and departing China for Canada on May 29, 2013. She arrived at Montreal on August 25, 2013 where final preparations upon her entering of service were completed. She sailed up the St. Lawrence Seaway on July 30, 2013, to unload her cargo of ballast stone at Windsor, Ontario.

The Thunder Bay was upgraded to Nova Scotia class certification in February of 2020 while receiving a routine drydocking and inspection. Additional hull strengthening was fitted while in drydock.

The Thunder Bay continues to be an active member of the Canada Steamship Lines fleet, hauling ore, coal, stone, grain, and salt across ports on the Great Lakes and Canadian east coast.

Compiled By Brendan Falkowski

Updated on June 10, 2020



“Thunder Bay”. Canada Steamship Lines. N.d. Accessed 10 June 2020. <>

“CSL’s Trillium Class Laker”. Canada Steamship Lines. N.d. Accessed 10 June 2020. <>

Greenwood’s Guide to Great Lakes Shipping 2016, Harbor House Publishers, 2016. Pp. 4.16.

Wilush, Ted. “Thunder Bay (3)”. Great Lakes & Seaway Shipping Online. N.d. Accessed 10 June 2020. <>