The 11-inch mortar M1877 was a Russian 280 mm coastal and fortress mortar that was used in the Russo-Japanese War and World War I.
11-inch and 9-inch mortars at Suomenlinna.
11-inch and 9-inch mortars at Suomenlinna.
A front view of the mount and its recoil mechanism at Suomenlinna.
The 11-inch M1877 shared the same mount as this 9-inch M1877.
The 9-inch mortar M1877 was a Russian 229 mm coastal, fortress and siege mortar that was used in the Russo-Japanese War and World War I.
A 9-inch coastal mortar at Suomenlinna.
A 9-inch mortar captured by the Japanese at Port Arthur.
A 9-inch mortar captured by the Japanese at Port Arthur.
A 9-inch mortar being transported.