From Wendy Sadler: This is a photo of Silas Usher....he was serving with HMS Vanguard when she exploded in 1917, but was on leave, so not a casualty of the ship....During the Battle of Jutland however he was stationed with HMS YARMOUTH.
Bit of a character, he spent time in cells several times over his service and in 1919 deserted the Navy, with Colchester Police recovering him (he was born near the town). He died in 1974.
Able Seaman J 22752