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Izyaslav-class destroyer

20th century Baltic Fleet warship class

Field	Value
section1	{{Infobox ship/image
image	KarlMarks1922-1941a.jpg
image_caption	Karl Marx, the former Izyaslav
section2	{{Infobox ship/class overview
name	Izyaslav class
builders	Bocker and Lange, Reval, Estonia
operators	*
class_before
in_commission_range	1916–1954
total_ships_planned	5
total_ships_completed	3
total_ships_canceled	2
total_ships_lost	2
total_ships_scrapped	1
section3	{{Infobox ship/characteristics
header_caption	(as built)
type	Destroyer
displacement	1390 LT
length	107 m
beam	9.5 m
draught	4.1 m
propulsion	2 shafts; 2 steam turbines
speed	31 kn
range	1880 nmi at 21 kn (estimated)
power	*5 Normand boilers
*{{cvt	32700	shp	kW	lk	on}}
complement	150
armament	*4–5 × single 4 in guns

32700 shp
3 × triple 17.7 in torpedo tubes
1 × 2.5 in AA gun
1 × 3 in Lender AA gun
80 mines The Izyaslav class () were a class of destroyer flotilla leaders built for the Baltic Fleet of the Imperial Russian Navy during World War I.

Design and description

The Izyaslav-class ships were designed to serve as flotilla leaders for the -type destroyers. The ships normally displaced 1390 LT and 1570 - at full load. They measured 107 m long overall with a beam of 9.5 m, and a draft of 4.1 m. The Izyslavs were propelled by two Brown-Boveri-Parsons steam turbines, each driving one propeller using steam from five Normand-Vulcan boilers. The turbines were designed to produce a total of 32700 shp for an intended maximum speed of 35 kn. During the ships' sea trials, they only reached 31.7 - despite outputs of 34975 -. The ships carried enough fuel oil to give them an estimated range of 1880 nmi at 21 kn. Their crew numbered 150.

The Izyaslav-class ships were originally intended to have an armament of two 60-caliber 102 mm (4 in) Pattern 1911 Obukhov guns, one each at the bow and stern, and a dozen 450 mm torpedo tubes in six double mounts. The Naval General Staff changed this to four triple mounts once they became available in 1914 and then decided to remove a torpedo mount in exchange for another four-inch gun at the stern on 20 August 1915 while the ships were still under construction. Another gun was ordered to be added on the forecastle on 25 May 1916. was complete with this gun armament, but her sister ships had another gun added on the stern in April 1917. All of these guns were on the centerline and interfered with each other's movements. Anti-aircraft defense was provided by a 63 mm Pattern 1916 anti-aircraft (AA) gun and a 76 mm Lender AA gun, both in single mounts amidships. The Izyaslavs were completed with one triple torpedo mount between the forward funnels and two mounts aft of the rear funnel. They could carry 80 M1912 naval mines. They were also fitted with a Barr and Stroud rangefinder and two 60 cm searchlights.

Ships

These ships were built by Bocker and Lange in Reval, Estonia. The ships were delayed due to ordering machinery from Switzerland which was embargoed on the outbreak of World War I. New machinery was ordered from Britain.

Ship (original name in Russian service)	Name(s) in Soviet or foreign services (ships were renamed)	Laid down	Launched	Completed	Fate
Avtroil	Estonian Lennuk
Peruvian Almirante Guise	9 November 1913	13 January 1915	12 August 1917	Captured by the British in 1918, given to the Estonian Navy and sold by the Estonians to Peru in 1933, scrapped, 1954
Izyaslav	{{ship	Soviet destroyer	Karl Marx	2}}	27 October 1913	9 November 1914	16 June 1917
Prymyslav	{{ship	Soviet destroyer	Kalinin	2}}	27 June 1915	20 July 1927	Sunk, 28 August 1941
Bryachislav	NA		1 October 1915	NA	Evacuated to Petrograd, but scrapped incomplete, 1923
Fedor Stratilat		1915

Citations

Bibliography

References

Verstyuk & Gordeyev, p. 65
Apalkov, p. 48
Verstyuk & Gordeyev, p. 75
Verstyuk & Gordeyev, pp. 66–67
Breyer, p. 62

Info: Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

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