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World of Warships Supertest: British Tier X Battleship St. Vincent

5 min read

Historical background

St. Vincent is based on the I3 design of battlecruisers. In terms of design studies, I3 preceded G3 and introduced the strange layout of having all turrets located forward of the ship around the superstructure and the engines at the rear. The purpose of this layout was to maximize firepower as well as engine power while still having a reasonably compact hull.

Thanks to this design, the estimated speed would have been 32.5 knots provided by an impressive 180 000 horsepower. The main battery consisted of nine 18-inch guns (457 mm) in three triple turrets, two superfiring at the front and one amidship facing aft.

Even with these innovations, the design was still considered too big which drastically limited the number of available drydocks. As such, it was abandoned in favor of the smaller G3 design.

If you want to learn more about the I3 design as well as the other battlecruisers designs from the Royal Navy, here is a video from Drachinifel covering them:

In World of Warships, we are getting a fairly good representation of the I3 design with some modernization done to the anti-air armament as well as some armor changes from what I see. The ship sits at the end of the battlecruiser line and compared to previous ships she has a much more advantageous placement when it comes to its underwater torpedo tubes. They are aimed forward and cover a 40° area in front of the ship.

Ship’s preview

Ship’s camouflage

For the classic reminder, this is a ship in testing, anything can change so don’t look at her like she would already be released.


Gun Fire Control System
Main battery


St. Vincent


Propulsion: 180 000 HP


Mk X mod. 1


457 mm/45 Mk.II in a turret


‎622 mm Mk I

General Characteristics

Health79 400 HP
Torpedo Damage Reduction14 %
Displacement57 893 tons
Overall length280.0 m
Beam32.25 m
Overall height (keel to the highest point on the ship)38.0 m
Freeboard5.9 m
Main Armament
Maximum Firing Range19.540 km
457 mm/45 Mk.II in a turret3 x 3 457 mm
Secondary Armament
Maximum Firing Range7.300 km
152 mm/50 BL Mk.XXII on a Mk.XVIII mount
113 mm/45 QF Mk.I/III on an RP10 Mark II BD mount
8 x 2 152 mm
10 x 2 113 mm
Torpedo Armament
Maximum Firing Range10.000 km
622 mm PR Mk II
2 x 1 622 mm
Maximum speed32.5 knots
Turning Circle Radius970 m
Rudder Shift Time16.8 s
Surface Detectability16.28 km
Air Detectability11.08 km
Detectability After Firing Main Guns in Smoke17.31 km

Main Armament

3 x 3 457 mm/45 Mk.II in a turret
 Maximum Firing Range19.540 km
 Reloading Time30.0 s
180 Degree Turn Time30.0 s
Optimal firing angles at the front30°
Optimal firing angles at the rear30°
Sigma1.5 sigma
Maximum Dispersion212 m
Type of Projectile HE – 457 mm HE Mk IIa
Alpha Damage7 100
Penetration capacity 76 mm
Explosion size3.25
Fire chance63 %
Projectile Speed757 m/s
Air Drag0.29
Projectile Mass1 814.0 kg
Type of ProjectileAP – 457 mm AP Mk IIa
Alpha Damage14 900
Projectile Speed762 m/s
Air Drag0.29
Projectile Mass1 506.0 kg
Projectile Krupp2 485
Projectile Detonator0.015 s
Detonator threshold76 mm
Ricochet Angles45° – 60°

Secondary Armament

8 x 2 152 mm/50 BL Mk.XXII on a Mk.XVIII mount
Maximum Firing Range7.300 km
Reloading Time12.0 s
Sigma1.0 sigma
Type of ProjectileHE – 152 mm HE Mk V
Alpha Damage2 150
HE penetration25 mm
Explosion Size0.54
Chance to Cause Fire9 %
Projectile Speed884 m/s
Air Drag0.362
Projectile Mass50.8 kg
10 x 2 113 mm/45 QF Mk.I/III on an RP10 Mark II BD mount
Maximum Firing Range7.300 km
Reloading Time5.0 s
Sigma1.0 sigma
Type of ProjectileHE – 113 mm HE 5crh
Alpha Damage1 700
HE penetration19 mm
Explosion Size0.38
Chance to Cause Fire8 %
Projectile Speed746 m/s
Air Drag0.329
Projectile Mass24.95 kg

Torpedo Armament

2 x 1 622 mm PR Mk II
622 mm Mk I*
Reloading Time45 s
Maximum Distance10.000 km
Optimal firing angles0°-20°
Damage21 067
Flooding Chance355%
Speed67 knots
Surface Detectability1.7 km

Anti-air Armament

10 x 2 113 mm/45 QF Mk.I/III on an RP10 Mark II BD mount
Sector range0.1 km – 5.8 km
Hit chance75 %
Sector’s damage29
Sector’s damage frequency0.29 s
Sector’s damage per second102
Flak clouds number5
Flak cloud damage1 470
4 x 8 40 mm/39 Vickers QF Mk.VIII on a Mk.VI mount
14 x 1 40 mm/56 OQF Mk.III on a Mk.VII mount
10 x 2 40 mm/56 OQF Mk.1/2 on a Mk.IV mount
Sector range0.1 km – 3.5 km
Hit chance75 %
Sector’s damage199
Sector’s damage frequency0.29 s
Sector’s damage per second697


Slot 1
Slot 2
Slot 3
Slot 4
Damage Control Party
consumable_PCY009_CrashCrewPremiumWork time: 15 s
Cooldown: 80 s
Repair Party
Number of charges: 3
Work time: 20 s
Cooldown: 80 s
HP regeneration speed: +2.0%/s
Casemate damage regeneration: 50%
Citadel damage regeneration: 10%
Engine Boost
Number of charges: 3
Work time: 120 s
Cooldown: 120 s
Speed bonus: +8%
Defensive AA Fire

Number of charges: 3
Work time: 40 s
Cooldown: 80 s
Damage from continuous DPS: +50%
Damage from flak explosions: +300%

The Armor

External armor protection:

Front and rear armor protection of the middle section:

Armored deck under the funnels:

Main armor deck:


Citadel armor protection:

Turrets armor protection:

Hidden armor protection inside the bow and stern:

Personal Opinion

Compared to Duncan, St. Vincent looks very strong. In terms of firepower, she uses the same shells as Thunderer except that she gets weaker HE with lower damage and penetration. St. Vincent also gets short-fuse AP shells compared to Thunderer. She still has the problem of the short firing range but at least, she gets good concealment and high speed to compensate. The armor is massively improved compared to Duncan with a thicker weather deck, internal main armor deck, and even a turtleback to protect the ship’s sides.

Another major improvement of this ship compared to the previous ones is the position of the torpedo launchers. They are aimed towards the front of the ship instead of its broadside. As such, it will be incredibly useful for aggressive actions and will also save your bacon from potential ramming attempts.

Still though… THIS SHIP IS SO DAMN UGLY! Killerbin and Painezor, couldn’t your ancestors design good-looking ships in the 20s?

Also, my OCD is going crazy right now.

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