Bjørgvin-class coastal defence ship

Bjørgvin as HMS Glatton
Class overview
Operators:	Royal Navy
Preceded by:	Eidsvold-class battleship
Succeeded by:	None
Built:	1912–1914
In commission:	1914–1928
Completed:	2
Lost:	1
General characteristics
Type:	Coastal defence ship
Displacement:	4,900 long tons (4,979 t)
Length:	94 m (308 ft 5 in)
Beam:	16.8 m (55 ft 1 in)
Draught:	5.4 m (17 ft 9 in)
Propulsion:	Coal-fired reciprocating steam engines, 4,000 shp (2,983 kW)
Speed:	15 knots (17 mph; 28 km/h)
Complement:	305
Armament:	2 × 24 cm (9.4 in) guns 4 × 15 cm (5.9 in) guns 6 × 10 cm (3.9 in) guns 2 × submerged torpedo tubes
Armour:	Belt: 7 in (180 mm) Bulkheads: 4 in (100 mm) Barbettes: 8 in (200 mm) Turrets: 8 in (200 mm) Decks: 2.5 in (64 mm) Conning tower: 8 in (200 mm)

The Bjørgvin class coastal battleships were ordered by Norway in 1912 to supplement the older Eidsvold and Tordenskjold-class coastal defence ships. The two ships laid down were compulsorily purchased by the Royal Navy when World War I broke out, and classified as monitors. The British government paid Norway £370,000 as compensation for each ship.

The Bjørgvin class would be significantly more heavily armed than the previous Eidsvold class:

In addition to the heavier armament, the two ships of the Bjørgvin class were also significantly better armoured, with her armour better distributed:

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