During his time in command of the Mars, she suffered a serious accident in April 1902 when one of her forward 12-inch (305-mm) guns was fired before the breech was closed, killing two officers and nine enlisted men, injuring seven, and wrecking the forward main battery turret.

[2] He was posted to the depot ship HMS Duke of Wellington at Portsmouth on 2 January 1903,[3] and later the same month received a Good Service pension.

[4] He became Director of Naval Ordnance on 1 January 1904, but after a year was appointed Admiral-superintendent of Portsmouth dockyard in February 1905, serving as such until November the following year, when he was appointed in command of a Cruiser squadron in the Mediterranean.

Berry was appointed a Commander of the Royal Victorian Order (CVO) in 1905, and promoted to a Knight Commander (KCVO) on 10 February 1906, on the occasion of the visit of King Edward VII to Portsmouth to launch the new HMS Dreadnought.

[5] Barry married, in 1881, Elizabeth Annie Maltby, daughter of Rev.