British monitor HMS M33 1915-1924 (HMS Minerva 1925-1939, hulk C23 1939-1945, RMAS Minerva 1945-? and since 1990s again HMS M33)

With our thanks to Alvie Jones for allowing us to publish

Part of M29-class, preceded by M15 class and succeeded by Erebus-class. Designed for coastal bombardments. Building ordered on 15 March 1915, launched by Workman Clark, Belfast on behalf of Harland and Wolff, Northern Ireland with yard number 489 on 22 May 1915, completed on 26 June 1915, commissioned on 24 June 1915, active in the Gallipoli Campaign (19 February 1915-9 January 1916) against the Ottoman Empire, converted into a mine-laying training ship in 1925 and renamed HMS Minerva on 3 February, later fuelling hulk and boom defence workshop, floating office at the Gosport Royal Clarence Victualling Yard sin 1946, sor sale in 1984, became part of the National Historic Fleet and opened as museum ship at Portsmouth, England on 7 August 2015.

Displacement 580 tons (deep load) and as dimensions 54.03 x 9.4 x 1.80 metres or 177.3 x 31 x 5.11 feet. The triple expansion steam engines supplied via twin screws 4,000 hp allowing a speed of 9.6 knots and a range of 1,400 nautical miles/8 knots.  Crew numbered 72 men. Armament consisted of 2-15.2cm/6” BL Mk XII guns, 1-57mm 6 pd quick firing guns and 2 Maxim guns.