Bjørgvin class battleship

Bjørgvin class battleship

The "Bjørgvin class" coastal battleships were ordered by Norway in 1912 to supplement the older "Eidsvold" and sclass|Tordenskjold|battleship|0 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.

hips in class

*""Bjørgvin"" (1912) - Compulsorily purchased by the British Navy and renamed HMS|Glatton|1914|6, blew up in September 1918.
*""Nidaros"" (1912) - Compulsorily purchased by the British Navy and renamed HMS|Gorgon|1914|6.

Description

The "Bjørvin" class would be significantly more heavily armed than the previous "Eidsvold" class:
* Two 24 cm/50 guns, which in British service were relined to use standard British ammunition and became 9.2"/51. [ [http://www.navweaps.com/Weapons/WNBR_92-51_mk12.htm British 9.2"/51 (23.4 cm) Mark XII] , updated 8 April 2005, retrieved 9 December 2005] These were considered among the longest-ranged guns in the world in 1918. As designed, they would have fired a 190 kg (419 lb) projectile with a muzzle velocity of 884 m/s (2,900 ft/s), capable of penetrating 22.2 cm (8.75 in) of face-hardened armour at a range of 7,000 m (7,650 yards).
* Four 15 cm/50 in single turrets - one aft, one fore, two midships (one on either side). In British service they were relined to take standard 6 inch (15 cm) ammunition. [ [http://www.navweaps.com/Weapons/WNBR_6-49_mk18.htm British 6"/49 (15.2 cm) BL Mark XVIII] , updated 1 April 2005, retrieved 9 December 2005]
* Six 10 cm (3.94 in) guns.
* Two submerged torpedo tubes.In addition to the heavier armament, the two ships of the "Bjørgvin" class were also significantly better armoured, with her armour better distributed:
* 7 inch (17.78 cm) thick armour in the belt
* 8 inch (20.32 cm) thick armour on the turrets
* 8 inch (20.32 cm) thick armour in the barbettes
* 2.5 inch (6.35 cm) thick armoured deck
* 8 inch (20.32 cm) thick armour on the conning tower
* 4 inch (10,16 cm) thick armoured bulkheads

External links

* [http://www.fmu.mil.no/marine/Bibliotek/bjorgvin.html Model of KNM Bjørgnvin] , head on view
* [http://www.fmu.mil.no/marine/Bibliotek/Bilder/124.jpgDetails of the forecastle] and [http://www.fmu.mil.no/marine/Bibliotek/Bilder/125.jpgdetails of bridge] .
* [http://www.bobhenneman.info/glatton.htm The loss of the HMS Glatton, an "interesting little ship"] , retrieved 15 January 2007

Notes

References

* [http://www.fmu.mil.no/marine/Bibliotek/bjorgvin.html Model of KNM Bjørgnvin] , from the website of the Norwegian Armed Forces Museum, retrieved 9 December 2005
* On guns, see Notes.
* [http://navalhistory.flixco.info/H/288402x53056/b259869/n0.htm Naval History via Flix: KNM Nidaros] , retrieved 11 December 2005
* [http://navalhistory.flixco.info/G/157769x230254/b281303/n0.htm Naval History via Flix: Technical Details of Ship HMS Gorgon] , retrieved 9 December 2005


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