This is a set of photos of SC 99 and SC 260 (both served in Unit 10, Plymouth), and other chasers. See also the crew photo set from the McKeige collection.
Note the excellent photo in this set showing the K-tube frame and reel, stowed against the pilot house, and a nice image of the end of a depth charge showing the depth settings (and a sailor in rain slicker sitting on the depth charge).
Thanks to Bruce McKeige, son of Ens. McKeige, for lending the photo album to The Subchaser Archives for scanning.