Three OL-5s were purchased. Two were based at Coast Guard Air Station Ten Pound Island Gloucester MA and one at Cape May NJ. Purchased in 1926, The amphibians were given tail numbers of CG-1 (later 101), CG-2 (later 102), and CG-3 (later 103). Two of the Loenings crashed while the third, 102 (CG-2), was retired in April 1935 UO-4 was retired in 1935.