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![Swim call top ship5621.jpg Swim call top](/sites/default/files/styles/max_1300x1300/https/s3.amazonaws.com/s3-east-testmedia-noaa.woc.noaa.gov/dam/Photos/legacy/pl23_ship5621.jpg?itok=pglAtFOl)
Description
Swim call top. Testing a ship's boat bottom at an unidentified port. (Image credit: Elmer Larsen Collection, CST NOAA/OMAO (ret.))
Credit
Elmer Larsen Collection, CST NOAA/OMAO (ret.)
Collection
Sailing for Science