Storozhevoy-class destroyer

Naval historians Yakubov and Worth state that the change to unit machinery was due to an incident when the British destroyer {{HMS|Hunter|H35|6}} was stopped due to machinery damage by a mine during neutrality patrols in the Spanish Civil War. The incident was reported at a meeting where Joseph Stalin was present and he ordered that the ships be redesigned with unit machinery so that a ship could still move if one of the two boiler or engine rooms were incapacitated. This change in design saved {{ship|Soviet destroyer|Slavny|1939|2}} following mine damage in 1941, but led to a considerable delay in the Soviet destroyer program and the cancellation of six Type 7 ships. Fitting the additional machinery in the same hull presented significant challenges, leading to an increase in weight, cramped accommodation and a reduction in fuel capacity. These changes led Soviet sailors to nickname the Type 7U, 7 Ukhudshennyi (ухудшенный, made worse).

The Storozhevoys had an overall length of {{convert|112.5|m|ftin|sp=us}}, a beam of {{convert|10.2|m|ftin|sp=us}}, and a draft of {{convert|3.98|m|ftin|sp=us}} at deep load. The ships were slightly overweight, displacing {{convert|1727|MT|LT}} at standard load and {{convert|2279|MT|LT}} at deep load. Their crew numbered 207 officers and sailors in peacetime and 271 in wartime.Yakubov & Worth, p. 101

The ships were powered by two geared steam turbine sets, each driving a single three-bladed {{convert|2.9|m|ftin|adj=on|sp=us}} propeller using steam provided by four water-tube boilers that operated at a pressure of {{convert|26.5|kg/cm2|kPa psi|0|abbr=on|lk=on}} and a temperature of {{convert|350|°C}}.Platonov, pp. 205–206 The turbines, rated at {{cvt|54000|shp}}, were intended to give the ships a speed of {{convert|38|kn|lk=on}}. The designers had been conservative in rating the turbines and many, but not all, of the ships handily exceeded their designed speed during their sea trials. {{ship|Soviet destroyer|Storozhevoy||2}} reached {{convert|40.3|kn}} during her trials in 1941, but {{ship|Soviet destroyer|Soobrazitelny|1940|2}} only managed {{convert|36.8|kn}}. Variations in fuel oil capacity meant that the range of the Storozhevoys varied between {{convert|1380|and|2700|nmi|lk=in}} at {{convert|19|kn}}.Yakubov & Worth, pp. 101, 106–107

File:Guns of the Soobrazitelny.jpg

As built, the Storozhevoy-class ships mounted four 50-caliber 130 mm/50 B13 Pattern 1936 in two pairs of superfiring single mounts fore and aft of the superstructure. Each gun was provided with 150 rounds. The development of the gun was troubled by excessive barrel erosion problems and three variants were built in a not entirely successful effort to resolve the problem which complicated logistical and operational support as each performed slightly differently. The manually operated mounts had an elevation range between -5° and +45° and had a rate of fire of 6–10 rounds per minute. They fired a {{convert|33.4|kg|lb|adj=on|sp=us}} shell at a muzzle velocity of {{convert|870|m/s|ft/s|abbr=on}}, which gave them a range of {{convert|25597|m|yd|sp=us}}.Yakubov & Worth, pp. 101, 103–104

Anti-aircraft defense was provided by two 55-caliber 76.2 mm anti-aircraft gun Model 1935 (34-K) AA guns and three 46-caliber 45 mm anti-aircraft gun (21-K) AA guns, all in single mountsHill, p. 40 as well as four {{convert|12.7|mm|adj=on|sp=us}} DK or DShK machine guns. The 34-K guns could elevate between -5° and +85°, had a rate of fire of 15–20 rounds per minute, and the ships carried 300 rounds per gun for them. Their muzzle velocity of {{convert|801|m/s|ft/s|sp=us}} gave their {{convert|11.9|kg|lb|adj=on|disp=flip|sp=us}} high-explosive shells a maximum horizontal range of {{convert|14640|m|yd|sp=us}} and an effective ceiling of {{convert|6500|m|ft|sp=us}}. The 21-K was a converted anti-tank gun with a rate of fire of 25–30 rounds per minute with an elevation range between -10° and +85°. The gun fired a {{convert|1.41|kg|lb|adj=on|sp=us}} shell at a muzzle velocity of {{convert|760|ft/s|m/s|abbr=on}}. This gave them a range of {{convert|9200|m|yd|sp=us}}. The Project 7Us stowed 500 rounds for each gun. The DShK had an effective rate of fire of 125 rounds per minute and an effective range against aircraft of {{convert|2500|m|yd|sp=us}}.Yakubov & Worth, pp. 101, 104

The ships were equipped with six {{cvt|533|mm|in}} torpedo tubes in two rotating triple mounts amidships; each tube was provided with a reload. The Project 7U-class ships primarily used the 53-38 or the 53-38U torpedo, which differed only in the size of their warhead; the latter had a warhead {{convert|100|kg|lb|sp=us}} heavier than the {{convert|300|kg|lb|adj=on|sp=us}} warhead of the 53-38. The torpedoes had three range/speed settings: {{convert|10000|m|yd|sp=us}} at {{convert|30.5|kn}}; {{convert|8,000|m|yd|sp=us}} at {{convert|34.5|kn}} and {{convert|4,000|m|yd|sp=us}} at {{convert|44.5|kn}}. The ships could also carry a maximum of either 60 or 96 mines and 25 depth charges. They were fitted with a set of Mars hydrophones for anti-submarine work, although it was useless at speeds over {{convert|3|kn}}.Yakubov & Worth, pp. 101, 105–106

Fire control for the main battery of the Storozhevoys was provided by a Mina-7 fire-control system that was derived from an Italian Galileo system. It included a TsAS-2 mechanical analog computer that received information from a KDP2-4 gunnery director on the roof of the bridge which mounted a pair of DM-4 {{convert|4|m|ftin|spell=in|sp=us|adj=on}} stereoscopic rangefinders. Anti-aircraft fire control was strictly manual with only a DM-3 {{convert|3|m|ftin|spell=in|sp=us|adj=on}} rangefinder to provide data to the guns. Some ships received the Soyuz high-angle fire-control system for the 34-K guns. It consisted of a mechanical analog computer, a Gazon vertical gyroscope and an SVP-29 stabilized viewfinder. The system could handle targets like bombers flying level, but was useless against aircraft attacking in a dive.Yakubov & Worth, pp. 104–105

Later in the war electronic equipment such as radar and sonar were supplied by the Allies for these ships.

All of the ships of the class were originally begun as Type 7 destroyers and their partially completed hulls were broken up and relaid down as Type 7Us. Those ships shown with two shipyards were begun at the first and were then towed to the second one for completion.Rohwer & Monakov, p. 234; Yakubov & Worth, p. 102

The first two Project 7U destroyers completed by the Black Sea shipyards, Smyshlyony and Soobrazitelny, joined the 3rd Destroyer Division, led by destroyer leaders {{Ship|Soviet destroyer|Kharkov||2|up=}} and {{Ship|Soviet destroyer|Moskva||2|up=}}, of the fleet Light Forces Detachment upon their entry into service at Sevastopol in late 1940 and early 1941.Khorkov, p. 24 After the 22 June 1941 start of Operation Barbarossa, the German invasion of the Soviet Union, Smyshlyony and Soobrazitelny were tasked to support Kharkov and Moskva in the 26 June Raid on Constanța together with the cruiser {{Ship|Soviet cruiser|Voroshilov||2}}. A grounded paravane on Smyshlyony prevented her from rendezvousing on schedule, while Soobrazitelny became separated from the cruiser in the dark. Both destroyers helped escort the damaged Kharkov back to base.Kachur, pp. 73–75, 78 Sposobny and Svobodny joined the 3rd Division when they entered service during the war.Balakin, p. 82 All three destroyers in service were on escort duty in July and from late August they escorted transports and provided fire support to the defenders of besieged Odessa.Balakin, pp. 108–109, 112, 122 Sovershenny never joined the fleet as she was heavily damaged by a Soviet mine during trials. Soobrazitelny was the only one of the five Project 7Us completed for the Black Sea Fleet to survive the war.

{{Reflist}}

• {{Cite book|script-title=ru:Легендарные "семёрки" Эсминцы "сталинской" серии|last=Balakin |first=Sergey |publisher=Yauza/Eksmo|year=2007|isbn=978-5-699-23784-5|location=Moscow |language=ru |trans-title=Legendary Sevens: Stalin's Destroyer Series}}
• {{Cite book|script-title=ru:Крейсера и миноносцы. Справочник|last=Berezhnoy |first=Sergey |publisher=Voenizdat|year=2002|isbn=978-5-203-01780-2|location=Moscow|language=ru|trans-title=Guide to Cruisers and Destroyers}}
• {{cite book | last = Hill | first = Alexander | year = 2018 | title = Soviet Destroyers of World War II | place = Oxford, UK| publisher = Osprey Publishing| isbn = 978-1-4728-2256-7|series=New Vanguard|volume=256}}
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• {{cite book|last=Rohwer|first=Jürgen|title=Chronology of the War at Sea 1939–1945: The Naval History of World War Two|publisher=Naval Institute Press|location=Annapolis, Maryland|year=2005 |edition=Third Revised|isbn=978-1-59114-119-8|author-link=Jürgen Rohwer}}
• {{cite book|last1=Rohwer|first1=Jürgen|last2=Monakov|first2=Mikhail S.|title=Stalin's Ocean-Going Fleet: Soviet Naval Strategy and Shipbuilding Programs 1935–1953|publisher=Frank Cass |location=London|year=2001|isbn=0-7146-4895-7|name-list-style=amp}}
• {{cite book|last1=Yakubov|first1=Vladimir|last2=Worth |first2=Richard |chapter=The Soviet Project 7/7U Destroyers|editor1-last=Jordan |editor1-first=John |editor2-last=Dent |editor2-first=Stephen |publisher=Conway|location=London|year=2008|title=Warship 2008|pages=99–114|isbn=978-1-84486-062-3 |name-list-style=amp}}

• {{cite book|title=Conway's All the World's Fighting Ships 1922–1946|editor-last=Chesneau|publisher=Conway Maritime Press|location=Greenwich, UK|year=1980|isbn=978-0-85177-146-5|last=Budzbon|first=Przemysaw|pages=318–346|chapter=Soviet Union|editor-first=Roger}}

{{Commons category|Storozhevoy class destroyer}}

• [http://wunderwaffe.narod.ru/Magazine/MK/1997_06/index.htm] {{in lang|ru}}

{{Storozhevoy-class destroyer}}

{{WWII Soviet ships}}

Category:Destroyer classes

Category:World War II destroyers of the Soviet Union

Category:Destroyers of the Soviet Navy