Comment: The ship wreck HMS Myrtle is in the Estonian Maritime Museum registry ID 486, monument 22265. Diving the wreck requires a permission. There is a permanent mooring buoy at the site.
The Azalea-Class minesweeper Myrtle was built in England in 1915. The ship arrived to Estonia during the days of the War of Independence as part of the British squadron. The ship was sweeping the German mine barriers from the sea routes. Myrtle was lost during the days of the War of Independence on a German minefield near Harilaiu on 15 July 1919. The ship was severely damaged in the course of several mine explosions. There were casualties.
Myrtle was first found by the fishermen of Saaremaa in 1934, but the location was soon forgotten. The wreck was found for the second time by the Russian hydrographic vessel GS-214 "Girokompas" in 1990. On 2 July 1999, the wreck was located in the course of fieldwork conducted by the Estonian Maritime Museum. In June 2000, the wreck was filmed for the documentary "His Majesty's Ship". A memorial plaque was placed to the wreck.
https://register.muinas.ee/public.php?menuID=en_wreckregistry&action=view&id=486
https://register.muinas.ee/public.php?menuID=en_monument&action=view&id=22265
The wreck lies now at a depth of 36 meters at location
58:35.349N 21:46.161E