here's her entry in Toghill's Royal Navy Trawlers Pt1
Built as : John Corwarder L20 in 1917 completed as a minesweeper of the Strath Class
Admiralty Number : 3685
Armament : 1x 12pdr
Sold to mercantile in 1919 renamed River Nith GY289 owned by Consolidated Fisheries of Grimsby
GUNTON. 143860. 1917/202. LT319. FLEMING & FERGUSON 443.
ex River Nith A12/45. ex River Nith GY289/39. ex John Corwarder LO20/19. ex Strath Class John Corwarder, MS 17/19. Scrapped 3/60 Charlestown, £1825.