High Quality Content by WIKIPEDIA articles! Iona (YT/YTB/YTM-220), a wooden tugboat originally classified YT-220, was launched by Greenport Basin & Construction Co., Greenport, New York, 26 August 1944; sponsored by Mrs. Martina E. Swanson; and placed in service 2 February 1945. She was the second United States Navy ship of that name. The new tug was assigned harbor duty in the 14th Naval District based at Pearl Harbor, and she remained there until transferred to the Philippine Islands in 1955. At Subic Bay Iona performed harbor duties necessary for the smooth functioning of a great naval base. She was reclassified a 'District Harbor Tug Medium', YTM-220, in February 1962. In June, 1963, following an accidental sinking in May, she was disposed of by burning.

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