First four images: A set of photographs from the collection of Howard Gould, Quartermaster on SC 258. SC 258 served in Plymouth, England (Base 27).
See also a photo of chasers including SC 258, here.
Thanks to Robert Chesbro, grand-nephew of Howard Gould, for submitting the crew photos to The Subchaser Archivesix
Fifth image: Portrait of James Edward Flaherty, who served on SC 258, courtesy of his son, Capt. Walter P. Flaherty USN (Ret).