Repower of the Tug Gretchen H

Cummins Hotips#873

Three Cummins QSK19 main engines installed in the Gretchen H.

As sometimes happens with boats in the maritime world, the recent repower of a tug shone a light on a pair of well known independent companies. The tug Gretchen H. (ex Harry Olsen, Polar Breeze) was built by Rodriguez Shipbuilding of Coden Alabama in 1997 and is currently owned, since 2005, by Boyer Towing.

Three sets of engine gauges and three throttles in the wheelhouse of the Gretchen H.

The Gretchen H is a good solid boat and her owners decided she was well worth a new set of engines. At 80 by 30 feet she has an eleven foot depth. As with many tugs out of the Rodriguez yard she has triple propellers and triple engines. She had an older set of engines rated at 700 HP each. The owners decided on three new Cummins QSK19 Tier 3 compliant engines rated for 750 HP each at 1800 RPM. The existing Twin Disc MG5202DC gears with their 6.1:1 ratios were a good fit for the new engines so they were retained.

A power-take-off mounted on the center engine.

Boyer did the repower themselves at their own Seattle yard.  The old Luggers came out and the new, bright-red Cummins machines went in. The tug performed flawlessly on sea trials at the end of January and is ready to go back to work towing barges between Seattle, Wake Island, or Alaska.

Photos: Mike Fourtner/Cummins

For further information:

Boyer Towing

Seattle, WA

206 763-8688


Mike Fourtner

Commercial Marine Sales, Pacific Region

Cummins Sales and Service

3300 Mottman Rd. SW

Olympia, WA 98512

Direct     360 242 4175

Mobile:  360 742 2864



Capt. Jennifer McQuilken

Marketing Communications Leader, Marine and Oil & Gas

Cummins Inc.

4400 Leeds Ave. Suite 300

Charleston, SC 29405



Phone: +1 843 696-9534 (call or text)

  1. Haig-Brown & Assoc. Ltd.

Bangkok, Thailand
Phone: 66 (0)8 5347 6206




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