HMS Severn

Survived

Type	Monitor
War	First World War
Main guns	2 × 6″ guns

Shallow-draught river monitor built for Brazil, towed out to East Africa to destroy Königsberg in the Rufiji delta.

HMS SEVERN in bombarding position in Arab House Creek in the Rufigi River Delta, German East Africa, 3 July 1917. Port wings flooded to get extra elevation for its 6 inch guns. The after 6 inch gun is being loaded to bombard the railway loop trenches. Photo: Ross W (Commander), Public domain · Wikimedia Commons

Armament and specifications

Armament

2 × 6 in (152 mm) guns
2 × 4.7 in (119 mm) dual-purpose guns
4 × 3-pounder guns
1 × 3-pounder anti-aircraft gun

Armour

Belt: 3–1.5 in (76–38 mm)
Bulkheads: 1.5 in (38 mm)
Barbette: 3.5 in (89 mm)
Turret Face: 4 inches (102 mm)

Builder	Vickers
Laid down	24 August 1912
Launched	19 August 1913
Displacement	1,260 long tons (1,280 t)
Length	266 ft 9 in (81.3 m)
Speed	12 kn (22 km/h; 14 mph) (design) 9.5 kn (18 km/h; 11 mph) (in service)

As built, from the ship's Wikipedia article. Figures there may cover later refits too.

Career

Launched

19 August 1913

Battle of the Rufiji Delta

Survived

October 1914 – 11 July 1915

Fate

Survived

Sold 9 May 1921 for scrapping