Interlake Steamship Announces Christening of Tug and Barge
06/25:
Richfield, OH, June 25, 1999: The Interlake Steamship Company and Interlake Transportation, Inc. announce the christening of their new 7,200-horsepower Z-drive tug Dorothy Ann and self-unloading barge conversion Pathfinder at the Cleveland-Cuyahoga County Port Authority on Monday, June 28, 1999. Speaking at the ceremony is Congresswoman Marcy Kaptur (D-OH).
Designed by Ocean Tug & Barge engineering, Bellingham, MA, the 124' 6" long Dorothy Ann was constructed in 1998 by Bay Shipbuilding Company, Sturgeon Bay, WI. On September 16, 1998, she was towed to Escanaba, MI, where final outfitting was performed by Bark River Towing of Escanaba, Weld All of Menominee, MI, and Marine Accommodations of Jacksonville, FL. She entered service on June 23, 1999.
John B. Hopkins, Vice President, Marketing at Interlake, said, "The addition of this integrated tug-barge unit to our fleet has enabled us to enter new bulk cargo markets on the Great Lakes."
Dorothy Ann is the largest Z-drive tug built to date in North America. Her twin Ulstein Z-drives enable her to turn on her own axis, stop within her own length, and move easily in any direction. Coupled with barge Pathfinder, the pair is the most maneuverable unit on the Great Lakes. Alone, Dorothy Ann can travel at 16 MPH: when pushing the loaded barge, open lake speed is 11.5 MPH. She is fitted with a Great Lakes-specific articulated pin-type connection system for engaging Pathfinder's notched stern. Dorothy Ann's elevated pilot house - outfitted with state-of-the-art navigation and communication equipment - has a height of eye of 70 feet, and the vented tower was designed to spoil trailing air drafts. Accommodations include air-conditioned private cabins with semi-private bathroom facilities for 12 crew members, a lounge, and an owner's stateroom.
Namesake of tug Dorothy Ann is Dorothy Ann Tregurtha Croskey of Minneapolis, MN. Sponsor is Susan Tregurtha Marshall of Chicago, IL. Both are daughters of Paul R. Tregurtha, Interlake Steamship Company's vice-Chairman.
The barge Pathfinder is the former steam-powered Great Lakes bulk carrier J.L. Mauthe. The Mauthe was built by Great Lakes Engineering Works, River Rouge, MI, with dimensions of 647' x 70' x 36' and entered service in 1953. After 40 years of service in the Interlake Steamship fleet, she was idled in 1993. In January 1997, the Mauthe was towed to Bay Shipbuilding company for conversion to a self-unloading barge.
Designed by Northeast Technical Services Company, Inc., conversion involved eliminating forward cabins, removing propulsion machinery, replacing the original stern with a notch to accommodate the Dorothy Ann, and installing an automated unloading system utilizing Continental Conveyor & Equipment Company's HAC® belt arrangement and a 260' aft-mounted unloading boom. In the process, the vessel's length was reduced to 604' 6". Intended primarily to serve the bulk stone and aggregate trade, Pathfinder can safely handle a wide variety of bulk cargoes and material sizes.
Pathfinder loaded her first cargo at Escanaba, MI, on March 21, 1998, and has since become the largest tug-barge to transit Cleveland's Cuyahoga River. Her cargo capacity is 21,260 gross tons. Paired with the tug Joyce L. Van Enkevort, she delivered 112 cargoes totaling nearly two million tons in 1998, her first season of operation.
Sponsor of the Pathfinder is April S. Barker, of Hudson, OH, wife of Interlake Steamship's Assistant Vice President, James A. Barker.
In addition to the tug Dorothy Ann and barge Pathfinder, the Interlake Steamship fleet includes eight other self-unloading ships and one straight-deck bulk carrier with capacities ranging from 21,000 to 68,000 gross tons. Interlake Steamship serves bulk iron ore, coal, and stone markets throughout the Great Lakes.