Built in 1957, at Jakobson Shipyard Incorporated of Oyster Bay, New York (hull #375) as the Dalzelline for the Dalzell Towing and Transportation Company (New Haven Transport Company) of New York, New York.

In 1965, Dalzell Towing was acquired by McAllister Brothers Towing of New York, New York. Where the tug retained her name.

In 1969, the McAllister Brothers Towing Company renamed the tug as the Neill McAllister.

In 2007, the tug was phased out of active service and was "laid up."

In 2011, she was acquired by the Zenith Tugboat Company of Duluth, Minnesota. Where she was renamed as the Franz Van Riedel.

In 2012, the tug was acquired by Ocean tug and Barge Logistics of Port Au Prince, Haiti. Where the tug was renamed as the Icon I.

Her current, and or final disposition is unknown. She was a single screw, rated at 1,600 horsepower.