What is known about this ship
Larch Lake (J489) is a Canadian Lake-group 126-ft MMS construction hull, completed as a naval minesweeper for transfer.
Class context: MMS II class
The MMS II class was the enlarged 126-foot British Admiralty wooden motor-minesweeper design associated with MMS 1001-1090 and the related Canadian Lake construction program. It carried magnetic, acoustic, and mechanical sweeping gear on a substantially larger hull than the earlier MMS I series while retaining simple diesel propulsion and dispersed small-yard construction.
Later service and disposition
Completed for direct transfer to Soviet naval service; not commissioned in the Royal Canadian Navy.
Class relationship
This ship is recorded as a member of MMS II class. Shared design history belongs on the class page; this page concentrates on the individual hull where evidence is available.
Sources and further reading
- 126-ft Admiralty-type motor minesweepers (MMS1001) (1942-1946) ↗Navypedia · accessed 2026-09-19
- Conway's All the World's Fighting Ships, 1922–1946Conway Maritime Press
- Minesweepers Built in Canada In and Before WWII ↗ShipbuildingHistory.com · accessed 2026-09-19
- MMS-class minesweeper ↗Wikipedia · accessed 2026-09-19