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Rank VI USSR | Premium | Golden Eagles
Su-25K Pack
GarageImage Stroyny.jpg
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The Pr.7U, Stroyny, 1945 was a Storozhevoy-class destroyer built for Soviet Navy in the late 1930s as the Project 7U (Uluchshenny; improved) where the design flaws of previous Project 7 Gnevny-class were addressed. She was laid down on 29th December 1938 as a Gnevny-class destroyer but she was rebuilt to Storozhevoy-class standard following Stalin's orders. She was commissioned on 30th August 1941. She spent her entire war career in the Leningrad area conducting shore bombardment and naval gunfire support. During her service, she had to have gun liners exchanged twice, as her main armament fired a total of 5,424 shells in the span of four years. In 1953, she was converted into a rescue ship, made a target ship in 1963, and sold for scrap two years later.

Stroyny was introduced as a premium pack during Update 1.79 "Project X". As the main armament of all Project 7U destroyers is manually driven, the turrets suffer from poor traverse speed rendering these difficult when switching targets. The guns themselves are also protected only by 8 mm thick antifragmentation armour covering sides, front and top side. As with most destroyers from other navies as well, the Storozhevoy class features unarmoured magazines above waterline leading to fatal explosion when hit. Her boilers and transmission also take up nearly the entire length of the ship past the bridge.

It was removed from the store after the 2019 Summer sale. It was made available for purchase with Golden Eagles Ge icon.png for the 2019 "Russian Navy Day" mini-event until it was removed from in-game sale after the split of naval into Bluewater and Coastal trees in Update "New Power". It was briefly made available for purchase with Golden Eagles Ge icon.png for the 2022 and 2023 "Russian Navy Day" mini-events.

General info

Survivability and armour

Armourfront / side / back
Main fire tower13 / 13 / 0 mm
Hull16 mm (steel)
Superstructure4 mm (steel)
Number of section7
Displacement2 404 t
Crew271 people

Overall the armour on the Pr. 7U is mediocre and practically useless. Calibres from 30 mm and higher will have no problem with penetrating the armour and causing damages. Due to crew count, it is able to withstand a relative amount of time under heavy combat. However, heavy combat is unadvised in ships like the Pr. 7U considering your armour is lacklustre. When it comes to components, it is almost impossible to make an ammo explosion as the ammunition is below the waterline, meaning only armour piercing rounds fired below the waterline or torpedoes will be able to create an ammo explosion. When it comes to air threats (machine guns strafes, rockets, bombs), the Pr. 7U will be able to survive them with some exceptions of bombs. Bombs that land in a 0-40 m radius of the ships can cause fatal damage (it will also depend on the type of bomb, weight, TNT equivalent, etc).


Speedforward / back
AB82 / 31 km/h
RB67 / 25 km/h

Mobility-wise, the Pr. 7U is nothing we have not seen before, ~65 km/h top speed with really wide and slow turning radius. Soviet destroyers (until the Pr.56) are not known for being fast and should not use speed as primary advantage.

Mobility Characteristics
Game Mode Upgrade Status Maximum Speed (km/h) Turn Time (s) Turn Radius (m)
Forward Reverse
AB Stock ___ ___
Upgraded 82 31
RB/SB Stock ___ ___
Upgraded 67 25

Modifications and economy

Repair cost
AB2 286 Sl icon.png
RB3 052 Sl icon.png
Crew training10 000 Sl icon.png
Experts290 000 Sl icon.png
Aces700 Ge icon.png
Research Aces790 000 Rp icon.png
Reward for battleAB / RB / SB
Talisman.png 2 × 270 / 600 / 50 % Sl icon.png
Talisman.png 2 × 154 / 154 / 154 % Rp icon.png
Seakeeping Unsinkability Firepower
Mods new ship hull.png
Mods new ship rudder.png
Rudder Replacement
Mods new ship screw.png
Propeller Replacement
Mods new ship engine.png
Engine Maintenance
Mods ship damage control crew.png
Damage Control Division
Mods ship fire control crew.png
Fire Division
Mods engine smoke screen system.png
Mods ship anti fragmentation protection.png
Shrapnel Protection
Mods ship venting.png
Mods new ship pumps.png
New Pumps
Mods ship ammo wetting.png
Ammo Wetting
Mods tank ammo.png
Mods tank ammo.png
Mods new aa caliber turrets.png
Anti-Air Armament Targeting
Mods tank ammo.png
Mods new aux caliber turrets.png
Auxiliary Armament Targeting
Mods he frag proxi fuze ship.png
Mods ship rangefinder.png
Improved Rangefinder
Mods new main caliber turrets.png
Primary Armament Targeting
Mods ship mortar.png
Bomb mortar
Mods torpedo.png
Torpedo Mode


Primary armament

4 х Turret130 mm/50 B-13 cannon
Ammunition150 rounds
Vertical guidance-5° / 45°
Main article: B-13 (130 mm)

The Stroyny carries four 130 mm B-13 single mountings, with two turrets ahead of the superstructure and two behind. The B-13 cannon is shared by most WWII-era destroyers of the Soviet fleet, and is a very potent weapon. However, the main flaw with this weapon is its absolutely horrid turret rotation speed of 4.2 degrees / second vertically and horizontally. This means that you have to turn the turrets very early to be able to engage effectively. The guns themselves shoot accurately and have a high initial velocity (870 m/s compared to 790 m/s for the American 5"/38 guns). However, this comes at the expense of reload speed, as the manually-loaded weapons can only fire at 10 rounds per minute (RPM) with a spaded crew, compared to 22 RPM for the American 5"/38. In fact, this fire rate is slower than everything except for the Japanese and Italian 5" guns, which have a similar fire rate.

The guns themselves have access to three shell types: the OF-46 high-explosive (HE) shell, the PB-46A semi armour-piercing (SAPBC) shell, and the ZS-46R proximity-fuzed (HE-VT) shell. Of these weapons, the HE shell is usually the best against enemy destroyers and ships as it packs the most explosive filler, 3.58 kilograms of it to be exact. The SAPBC shell works better against the occasional cruiser you may encounter, as it packs more penetration capacity (up to 179 mm compared to 36 mm for the HE shell). Finally, the HE-VT shell is good against aircraft as it will explode when close enough to the enemy aircraft, meaning that it doesn't require a direct hit. However, it actually packs less explosive filler than the normal HE shell, which is unusual for any HE-VT shell. Combined with the horrible traverse rate, this means the guns aren't particularly suited for anti-aircraft duties.

Penetration statistics
Ammunition Type of
Penetration @ 0° Angle of Attack (mm)
1,000 m 2,500 m 5,000 m 7,500 m 10,000 m 15,000 m
130 mm OF-46 HE HE 36 36 36 36 36 36
130 mm PB-46A SAPBC SAPCBC 181 156 122 96 77 56
130 mm ZS-46R HE-VT HE-VT 26 26 26 26 26 26
Shell details
Ammunition Type of
mass (kg)
Fuse delay
Fuse sensitivity
Explosive mass
(TNT equivalent) (kg)
0% 50% 100%
130 mm OF-46 HE HE 870 33.4 0 0.1 3.58 79° 80° 81°
130 mm PB-46A SAPBC SAPCBC 870 33.5 0.01 6 2.35 48° 63° 71°
Proximity-fused shell details
Ammunition Type of
mass (kg)
Fuse delay
Fuse sensitivity
distance (m)
radius (m)
Explosive mass
(TNT equivalent) (kg)
0% 50% 100%
130 mm ZS-46R HE-VT HE-VT 870 33.8 0 0.1 240 16 2.06 79° 80° 81°

Secondary armament

3 х Turret76 mm/55 34-K cannon
Ammunition300 rounds
Main article: 34-K (76 mm)

The Stroyny carries three 76 mm (3-inch) 34-K mountings in single mounts, all at the rear - one additional mount than its tech-tree cousin, the Soobrazitelny. The 34-K is also shared by most WWII-era Soviet ships, and gives you a potent secondary weapon that is of a relatively high calibre. This gun has a high fire rate of 27 rounds per minute (2.2-second reload), which can be decreased to 1.1 seconds with a full crew. The weapon itself is decent at closer ranges, but isn't a particularly effective anti-aircraft weapon as it inherits the extremely weak Soviet traverse rate. The single mountings themselves are only capable of traversing at 10 degrees per second, marginally faster than guns of cruiser calibre (6 inch+) of other nations.

The gun itself has access to three main shell types - the O-361K high-explosive (HE) shell, the O-361D time-fuzed (HE-TF) shell, and the BR-361 armour-piercing (APHEBC) shell. Of these rounds, the HE is almost always the best against enemy boats as it has the most explosive filler, and consequently, does the most damage. The HE-TF round is slightly worse as it detonates on a timed fuze, meaning the accuracy of the shell depends on crew skills. Finally, the APHEBC shells are rarely usable due to their low damage potential. For good measure, bring mostly HE, and a bit of HE-TF and APHEBC just in case the situation arises.

Penetration statistics
Ammunition Type of
Penetration @ 0° Angle of Attack (mm)
100 m 1,000 m 2,000 m 3,000 m 4,000 m 5,000 m
O-361K HE 8 8 8 8 8 8
O-361D HE-TF 5 5 5 5 5 5
BR-361 APHEBC 121 100 81 65 53 43
Shell details
Ammunition Type of
mass (kg)
Fuse delay
Fuse sensitivity
Explosive mass
(TNT equivalent) (g)
0% 50% 100%
O-361K HE 845 6.95 0 0.1 483 79° 80° 81°
O-361D HE-TF 810 6.61 0 0.1 182 79° 80° 81°
BR-361 APHEBC 816 6.5 1.6 4 119 48° 63° 71°

Anti-aircraft armament

6 х Turret37 mm/67 70-K automatic cannon
Ammunition2000 rounds
Belt capacity5 rounds
Fire rate180 shots/min
4 х Turret12.7 mm DShK machine gun
Ammunition2000 rounds
Belt capacity50 rounds
Fire rate600 shots/min

The Stroyny actually has less anti-aircraft armament than the tech-tree Pr. 7U, but still more than enough to defend itself from any airborne threats.

The primary backbone of the Stroyny's anti-aircraft armament are it's six 37 mm 70-K anti aircraft guns. The 70-K is the standard Soviet anti-aircraft gun and serves as a reliable counterpart to the 40 mm Bofors gun used by the allied nations. This gun is extremely similar to the Bofors as it features a similar design, and fires continuously rather than needing to reload. The guns will eventually jam, but the time it takes to jam the weapons is very long so jamming is not a great issue. The weapon does not get access to belts, but the default one is very suited for ripping small ships or aircraft into shreds.

The Stroyny also carries four 12.7 mm DShK guns in single mountings. The 12.7 mm DShK machine gun is a heavy machine gun, similar to the M2 Browning used by the Americans and the Vickers guns used by the British. This gun fires from a fixed 50-round magazine and will need to be reloaded after the magazine is expended. The gun itself is rather mediocre, and will struggle to hit targets reliably at ranges exceeding 1.5 km. As well, the weapon doesn't do damage particularly well, considering that it is of a lower calibre. The Stroyny does not get access to any ammunition belt upgrades - the default one is the only belt available.

Additional armament

Setup 16 x 533 mm 53-38 torpedo
Setup 22 x BB-1 large depth charge
Setup 36 x 533 mm 53-38 torpedo
2 x BB-1 large depth charge

The Stroyny gets access to six 53-38 torpedoes in two triple mounts with no reloads. The 53-38 torpedo is also found on most other Soviet WWII-era destroyers, and is relatively mediocre as far as torpedoes go. In terms of damage-dealing capabilities, the torpedo is decidedly mediocre, having more explosive filler (300 kg of TNT) than the American torpedoes but less than the British and Japanese ones. However, the main drawback of the torpedo is it's range - without the "torpedo mode" modification, the 53-38s are restricted to a range of just 4 km, meaning that they are tied for the shortest-range bluewater-ship mounted torpedoes along with the Italian destroyer torpedoes. The torpedo mode modification is necessary for hitting longer-ranged targets, but reduces the torpedo's speed to just 56 km/h. In general, these torpedoes are a potent weapon against enemy bluewater ships, but lack the range to do significant damage without the "torpedo mode" modification.

The Stroyny can bring two BB-1 large depth charges, but these weapons are almost entirely useless as you will never get close enough to the enemy to be able to use them. Thus, they essentially serve as extra explosive content on deck, and provide little extra armament in exchange for an increased chance of ammunition (depth charge) detonation. In general, it is not recommended to bring them.

Usage in battles

Describe the technique of using this ship, the characteristics of her use in a team and tips on strategy. Abstain from writing an entire guide – don't try to provide a single point of view, but give the reader food for thought. Talk about the most dangerous opponents for this vehicle and provide recommendations on fighting them. If necessary, note the specifics of playing with this vehicle in various modes (AB, RB, SB).

Pros and cons

Summarise and briefly evaluate the vehicle in terms of its characteristics and combat effectiveness. Mark its pros and cons in the bulleted list. Try not to use more than 6 points for each of the characteristics. Avoid using categorical definitions such as "bad", "good" and the like - use substitutions with softer forms such as "inadequate" and "effective".




Stroyny was one of the final ships from the renowned Type 7 series. In fact, she hadn't even undergone the required tests before the start of the war. With only one commissioned engine, Stroyny proceeded to the Ust-Izhora shipyard and engaged the German troops assaulting Leningrad. While the city was under siege, the destroyer's crew laid down continuous fire on the enemy positions and provided fire support to the Red Army troops breaking through the blockade. According to the official data, Stroyny's primary armament fired a whole 5,424 rounds on the enemy during the Siege of Leningrad! Due to such intense levels of fire, the ship's gun liners – the special insertable tubes with cuts that are used in gun barrels – had to be changed twice. After the blockade was broken, Stroyny was stationed in Leningrad, where it remained until the war was over. In the post-war period, the destroyer was converted into a rescue vessel and later on used as a target ship. Stroyny was retired from military service in 1965.

- From Devblog



See also

Related development

External links

Shipyard named after A. A. Zhdanov (Судостроительный завод имени А. А. Жданова)
Patrol Ships 
Project 2  Groza
Project 1  Leningrad
Project 45  Opytny
Project 7U  Stroyny
Project 30-bis  Smelyi
Project 41  Neustrashimy
Project 56  Spokoinyy

USSR destroyers
  Imperial Russia
Derzky-class  Frunze
Fidonisy-class  Kerch
  Soviet Union
Pr. 1  Leningrad · Moskva
Pr. 45  Opytny
Pr. 7  Besposhchadny · Ryany
Pr. 7U  Soobrazitelny · Stroyny
Pr. 20  Tashkent
Pr. 30  Ognevoy
Pr. 30-bis  Smelyi · Bezuprechny
Pr. 41  Neustrashimy
Pr. 56  Spokoinyy · Blagorodnyy · Bravy
Trophies  Romania
Regele Ferdinand-class  Letuchiy

USSR premium ships
Motor torpedo boats  G-5 (ShVAK) · Pr.123K (A-11)
Motor gun boats  TKA-106 · Pr.183 BM-21 · Ya-5M
Motor torpedo gun boats  MPK Pr.12412P
Armoured gun boats  MBK-161 early · MBK pr.186 (MK 85) · Pr.1124 MLRS · Pr.1204
Sub-chasers  MPK Pr.122bis
Frigates  Rosomacha
Destroyers  Kerch · Ryany · Leningrad · Stroyny · Smelyi · Neustrashimy · Blagorodnyy
Light cruisers  Kerch · Zheleznyakov
Battleships  Marat