Built in 1961, at St. Charles, Louisiana as the Longhorn for Twenty Grand Marine Service Incorporated of Morgan City, Louisiana.
In 1982, the tug was acquired by the Southern Dredging Company Incorporated of Charleston, South Carolina. Where she was renamed as the Captain George.
In 2020, the tug was acquired by Coastline Marine Incorporated of Atlantic Highlands, New Jersey. Where the tug was renamed as the Osprey.
In 2025, she was acquired by Vinik Marine Services of Keyport, New Jersey. Where she was renamed as the Capt. Marco.
Powered by two, Detroit Diesel 12-V-71 diesel engines. She is a twin screw tug, rated at 700 horsepower.
Her electrical service provided by two, Detroit 371 generator sets. The tug's capacities are 4,000 gallons of fuel, and 2,000 gallons of water.