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ROYAL STREET
Pictured as the: Amazing Grace (American Tugs Incorporated) Photo by: Billy Smith

Built in 1958, by Greenville Shipbuilding Incorporated of Greenville, Mississippi (hull #1) as the William B. Barnett II for the American River Lines Incorporated of Greenville, Mississippi.

In 1966, the tug was acquired by the Illinois Central Railroad Company of Chicago, Illinois. Where the tug retained her name. And was utilizes to push rail ferry at Natchez, Mississippi.

In 1974, she was acquired by Seabrook Towing Incorporated of Charleston, South Carolina. Where she was renamed as the Captain Mash.

In 1989, she was acquired by the McAllister Brothers Towing Company of New York, New York. Where the tug retained her name.

In 1992, the tug was acquired by Detyens Marine Industries of Wilmington, North Carolina. Where the tug was renamed at the Willam J. Detyens. Named for William J. Detyens the Founder of Detyens Shipyards, Incorporated

The tug was later acquired by the Beyel Brothers Company of Cocoa Beach, Florida. Where the she was renamed as the William J.

She was then acquired by Detyens Marine Industries of Wilmington, North Carolina. Where the tug was renamed at the Willam J. Detyens.

In 1997, the tug was acquired by the Royal Street Towing Company of New Orleans, Louisiana. Where the tug was renamed as the Royal Street.

In 2014, the tug was acquired by Platinum Marine Incorporated of Mandeville, Louisiana. Where she was renamed as the Susan D.

In 2014, she was acquired by American Tugs Incorporated of Harvey, Louisiana. Where the tug was renamed as the Amazing Grace.

Rebuilt in 1998, and repowered in 2001. She is powered by two, Caterpillar 3508 diesel engines. With, Twin Disc reduction gears at a ratio of 6:1. She is a twin screw towboat, rated at 1,300 horsepower.
(William R. Detyens Jr.)


  • Vessel Name: ROYAL STREET
  • USCG Doc. No.: 277588
  • Vessel Service: TOWING VESSEL
  • Trade Indicator: Coastwise Unrestricted
  • Call Sign: WDI7701
  • Hull Material: STEEL
  • Hull Number: 1
  • Ship Builder: GREENVILLE BARGE CONSTRUC
  • Year Built: 1958
  • Length: 70
  • Hailing Port: BELLE CHASSE, LA.
  • Hull Depth: 7.2
  • Hull Breadth: 24
  • Gross Tonnage: 134
  • Net Tonnage: 91
  • Previous Vessel Names:
    William B. Barnett II, CAPTAIN MASH, William J. Detyens, WILLIAM J., William J. Detyens, ROYAL STREET, ROYAL STREET, SUSAN D.
  • Previous Vessel Owners:
    American River Lines Inc., Illinois Central Railroad Co., Seabrook Towing Inc., McAllister Bros. Towing Co., Detyens Marine Industries, Beyel Brothers Co., Detyens Marine Industries, ROYAL STREET TOWING COMPANY INC, PLATINUM MARINE LLC