HMS Mersey (1914)

HMS Mersey
History
Brazil
Name	Madeira
Builder	Vickers
Laid down	24 August 1912
Launched	30 September 1913
Out of service	3 August 1914
Fate	Sold to the United Kingdom
United Kingdom
Name	HMS Mersey
Acquired	3 August 1914
Fate	Sold 1921 for scrapping
General characteristics
Class and type	Humber-class monitor
Displacement	1,260 long tons (1,280 t)
Length	266 ft 9 in (81.3 m)
Beam	49 ft (14.9 m)
Draught	5 ft 7.2 in (1.7 m)
Installed power	1,450 ihp (1,080 kW)
Propulsion	2 × triple expansion engines 2 × Yarrow boilers 2 × screws
Speed	12 kn (22 km/h; 14 mph)
Complement	140
Armament	2 × 6 in (152 mm) guns 2 × 4.7 in (119 mm) howitzers 4 × 3-pounder guns 1 × 3-pounder anti-aircraft gun
Armour	Belt: 1.5–3 in (38–76 mm) Bulkheads: 1.5 in (38 mm) Barbette: 3.5 in (89 mm) Turret Face: 4 in (102 mm)

HMS Mersey was a Humber-class monitor of the Royal Navy. Originally built by Vickers for the Brazilian Navy and christened Madeira, she was purchased by the Royal Navy in 1914 on the outbreak of the First World War along with her sister ships Humber and Severn.