SC-277 was laid down at the Mare Island Navy Yard at Mare Island, California; launched on 31 July 1917; and commissioned 9 April 1918. The sub chaser conducted three trials between 11 April and 1 May, and on 3 May departed Mare Island.
While at Ponta Delgada, Azores, SC-277 received a repair party from destroyer tender on or after 30 April 1918.[1]
On 17 July 1920 SC-277 received, as part of the new U.S. Navy letter-number scheme, the hull designation of PC-277.[2] She returned to Mare Island on 17 October 1920.
SC-277 was decommissioned on 15 June 1922 and sold on 25 September 1922 to M. Levin & Sons of San Francisco, California. Her ultimate fate is unknown.