From: Dictionary of American Naval Fighting Ships, Vol.V p 163
A gem of varying hues.
Opal (PYc--8) was built in 1928 as yacht Coronet at Germania Werft, Kiel, Germany: purchased from her owner, M. S. Bush, 27 January 1941; converted at Merrill-Stevens Dry-dock Co., Miami, Fla.; and commissioned 10 June 1941.
Opal emerged in August 1941 after additional availability periods and reported 23 August at Guantanamo, Cuba for service in the 10th Naval District. PYc--8 patrolled off that naval base and among the Greater Antilles prior to arrival Trinidad, 24 April 1942, for similar "inshore patrol" duties. Early in October she sailed to the Charleston Navy Yard for installation of new sound detection equipment before returning to action against German submarines in the Caribbean.
Employed frequently during the first 5 months of 1943 on escort missions between Guantanamo and Trinidad, Opal departed the former 26 August for the Panama Canal Zone. Reassigned she became a replacement for another PYc previously designated to serve as a training ship for Ecuadorian naval crews. At first transferred on loan to Ecuador 23 September 1943, she was purchased by that government, 13 May 1949, and struck from the Navy List 7 June 1949. Renamed Manabi, she served the Ecuadorian Navy until struck in 1960 and scrapped.