Viribus Unitis

13.11

Viribus Unitis

Battleship | Europe | Tier V

Tech Tree Position

General

Purchase priceSpecial

Hit Points35,700

Main Battery

305 mm/45 Škoda K10 in a turret4 х 3 pcs.

Rate of Fire2.07 shots/min.

Reload Time29 sec.

Rotation Speed4 deg./sec.

180 Degree Turn Time45 sec.

Firing Range16 km.

Maximum Dispersion222 m.

HE Shell305 mm HE L4,0

Maximum HE Shell Damage4,200

Chance of Fire on Target Caused by HE Shell23 %

Initial HE Shell Velocity800 m./s.

HE Shell Weight450 kg.

AP Shell305 mm APC L3,4 4crh

Maximum AP Shell Damage8,500

Initial AP Shell Velocity800 m./s.

AP Shell Weight450 kg.

Secondary Armament #1

150 mm/50 Škoda K10 on a casemate mount12 х 1 pcs.

Firing Range4.3 km.

Rate of Fire6 shots/min.

Reload Time10 sec.

HE Shell150 mm HE 100 lb

Maximum HE Shell Damage2,200

Initial HE Shell Velocity880 m./s.

Chance of Fire on Target Caused by HE Shell11 %

AA Defense

66 mm/50 Škoda K10 on a single mount4 х 1 pcs.

. . . Average Damage per Second8.8

. . . Firing Range3 km.

Maneuverability

Maximum Speed20.5 knot

Turning Circle Radius530 m.

Rudder Shift Time11.5 sec.

Concealment

Surface Detectability Range12.13 km.

Air Detectability Range6.82 km.

Battle Levels

12345678910

13.11

Viribus Unitis

Battleship | Europe | Tier V

Tech Tree Position

General

Purchase priceSpecial

Hit Points35,700

Main Battery

305 mm/45 Škoda K10 in a turret4 х 3 pcs.

Rate of Fire2.07 shots/min.

Reload Time29 sec.

Rotation Speed4 deg./sec.

180 Degree Turn Time45 sec.

Firing Range16 km.

Maximum Dispersion222 m.

HE Shell305 mm HE L4,0

Maximum HE Shell Damage4,200

Chance of Fire on Target Caused by HE Shell23 %

Initial HE Shell Velocity800 m./s.

HE Shell Weight450 kg.

AP Shell305 mm APC L3,4 4crh

Maximum AP Shell Damage8,500

Initial AP Shell Velocity800 m./s.

AP Shell Weight450 kg.

Secondary Armament #1

150 mm/50 Škoda K10 on a casemate mount12 х 1 pcs.

Firing Range4.3 km.

Rate of Fire6 shots/min.

Reload Time10 sec.

HE Shell150 mm HE 100 lb

Maximum HE Shell Damage2,200

Initial HE Shell Velocity880 m./s.

Chance of Fire on Target Caused by HE Shell11 %

AA Defense

66 mm/50 Škoda K10 on a single mount4 х 1 pcs.

. . . Average Damage per Second8.8

. . . Firing Range3 km.

Maneuverability

Maximum Speed20.5 knot

Turning Circle Radius530 m.

Rudder Shift Time11.5 sec.

Concealment

Surface Detectability Range12.13 km.

Air Detectability Range6.82 km.

Battle Levels

12345678910

V

Special

Viribus Unitis — European special premium Tier V battleship.

The lead ship of the sole series of the Austro-Hungarian Navy dreadnoughts. By applying a rather heavy arrangement, the designers were able to create a well-armored battleship of a relatively small size, with powerful weapons consisting of twelve 305 mm main battery guns.

Viribus Unitis was first released for sale on 3 October, 2019

Modules

	Rate of Fire (shots/min)	180° Turn Time (sec)	Maximum Dispersion (m)	Maximum HE Shell Damage (HP)	Chance of Fire on Target Caused by HE Shell (%)	Maximum AP Shell Damage (HP)		Research price (exp)	Purchase price ()
305 mm/45 Škoda K10 in a turret	2.1	45	222	4,200	23	8,500		0	0

	Hit Points (HP)	Armor (mm)	Armor (mm)	Main Turrets (pcs.)	Secondary Gun Turrets (pcs.)	AA Mounts (pcs.)	Torpedo Tubes (pcs.)	Hangar Capacity (pcs.)		Research price (exp)	Purchase price ()
Viribus Unitis	35,700	13	280	4	12	4				0	0

	IDS_SHIP_PARAM_SUO_INCREASE_DIST (%)	Maximum Firing Range (km)		Research price (exp)	Purchase price ()
FKS Typ 5 Mod. 1		0		0	0

	Maximum Speed (knot)		Research price (exp)	Purchase price ()
Propulsion: 27,000 hp	20.5		0	0

Compatible Upgrades

Slot 1
Slot 2
Slot 3

Player Opinion

Performance

Warning: The data presented in the AA Defense sidebar section may be incorrect.
Refer to the in-game Port screens for more useful data.

Viribus Unitis is the first Austro-Hungarian ship to enter World of Warships and currently sits at Tier V of the European tree as a premium ship, making her also the first European battleship to enter the game.

One of Viribus Unitis's strengths can be found in her main armament. With twelve main guns distributed in four triple turrets she can throw a large volume of shells towards her target while her reload is on a reasonable level, giving her a very good shell output over time. The main shell type as for most other battleships should be AP, as the fire chance and Alpha Damage of Viribus Unitiss' HE shells are not particularly noteworthy. However, there are also downsides to Viribus Unitiss' armament. To begin with, the turret rotation is fairly slow meaning that captains should plan in advance which side to fire at. Furthermore it should be noted that the firing angles of the main guns are akin to Großer Kurfürst, resulting in a high risk being taken whenever one wishes to unleash a full broadside. Lastly, the main battery range is the lowest of any Tier V battleship except Pyotr Velikiy. The secondary armament is lacking in both hitting power and range and should thus not be considered when outfitting Viribus Unitis. Instead, focus should be laid on improving the main battery as much as possible with Aiming Systems Modification 1.

Being a ship from the era of dreadnoughts, Viribus Unitis boasts a lot of distributed armor. The casemate is armored with 180mm sides making them immune to any HE shells and a lot of small and medium caliber AP, while the 30mm midship decks ensures good HE resilience there. A 150mm strong extension of the main belt covers large areas of the bow, resulting in a great difficulty for incoming shells to hit the citadel through the bow of Viribus Unitis. A turtleback ensures a good resistance of the citadel against shells coming through the belt armor, and if a shell does manage to explode within Viribus Unitis's citadel her Repair Party allows her to recover 33% of the damage taken instead of only 10%. These advantages do come at a price however. Viribus Unitis has by far the lowest hitpool of any Tier V battleship, even being below numerous Tier IV and Tier III ships. What this means is that even normal penetrations can result in the loss of a large percentage of the hitpool. The lower percentage of casemate damage being healed by her Repair Party further amplify this problem, making Viribus Unitis exceptionally vulnerable against overmatching shells. For this reason it is heavily recommended to invest into captain skills such as Basics of Survivability and Fire Prevention.

The maneuverability of Viribus Unitis is a mixed bag. Her top speed is at the bottom of Tier V battleships, however her turning characteristics are very good. A quick responding rudder and the smallest turning circle of any battleship in her MM spread allow for fast changes of direction, which do come in handy when considering the turret traverse angles of the main battery.

Viribus Unitiss' greatest weakness lies in her vulnerability against aircraft. Lacking any sort of meaningful AA defense her only hope is to dodge the dropped ordnance or to stick close to teammates with better AA defenses.

Finally Viribus Unitis also has the best concealment of any battleship at her tier. Getting as low as 10.9km when fully upgraded this gives Viribus Unitis an edge when facing off against other battleships.

The way Viribus Unitis should be played is by prioritizing cruisers over other targets. Trying to stick to allies for protection against aircraft and to have them act as shields against returning fire is heavily recommended. Open duels against other battleships should be avoided whenever possible due to the vulnerability of Viribus Unitis against large caliber AP shells. In particular when facing Tier VII ships Viribus Unitis will have to be very careful with her movements.

Pros:

• Heavy broadside of twelve guns is potentially devastating
• Very good accuracy for a Tier 5 battleship
• Good armor, comparable to other WW1-era dreadnoughts
• Good rudder shift time and very tight turn radius
• Heavy secondary armament with good damage and fire chance
• Excellent concealment

Cons:

• Bad main battery firing angles
• Second shortest main battery range among Tier 5 battleships
• Secondary armament is painfully short ranged
• Smallest healthpool in tier/class
• Poor speed of only 20.5 knots
• Defenseless against plane attacks
  

Research

As a premium ship, Viribus Unitis doesn't have any upgrades to research.

Optimal Configuration

Upgrades

The recommended upgrades for Viribus Unitis are as follows:

• Slot 1: Main Armaments Modification 1 will help reduce the likelihood of one of the main battery turrets becoming disabled.
• Slot 2: Damage Control System Modification 1  reduces the chance of flooding or fire on the ship.
• Slot 3: Aiming Systems Modification 1 decreases the dispersion of the main battery shells.

Commander Skills

Recommended Commander Skills
Cost (points)	Attack			Defense
1	Gun Feeder -40% time to switch shell type.	Demolition Expert +1% chance of main and secondary HE shells causing a fire +15% to the fragmentation damage area of HE ordnance when firing at submarines.	Consumables Specialist −7.5% cooldown time of all Consumables except:  Damage Control Party ,  Repair Party .	Emergency Repair Specialist -3% cooldown time of Damage Control Party  and Repair Party . ★★	Incoming Fire Alert Receive a warning about a salvo fired at your ship from more than 4.5 km.	Preventive Maintenance −30% chance of main armament, engines, steering becoming incapacitated +15% to HP of secondary and AA guns.
2	Grease the Gears +20% main turret traverse speed. ★★	Inertial Fuse for HE Shells +25% armor penetration of HE shells. Base fire chance reduced by half.	Brisk So long as the ship remains undetected: +10% ship speed.	Vigilance +25% detection range of enemy torpedoes +7% damage reduction of Torpedo Protection System. . ★★	Priority Target The detection indicator will show the number of enemies targeting you with main battery. ★★	AAA & ASW Expert +15% continuous AAA and flak damage . +10% damage inflicted by depth charges. While AAA is active: −40% ship consumables reload time..
3	Super-Heavy AP Shells +7.5% AP shell damage −10% fire and flood damage received +25% fire and flood duration.	Long-Range Secondary Battery Shells +20% secondary battery firing range.	Adrenaline Rush -0.2% reload time of all armaments per 1% HP lost +0.2% AA continuous damage per 1% HP lost. ★★	Basics of Survivability -15% repair, fire, and flooding duration. ★★	Improved Repair Party Readiness −0.8% reload time of Repair Party each time your ship receives potential damage equal to 100% of the ship's base HP. After receiving 2M HP potential damage: +1 charge of Repair Party ..	Focus Fire Training In an active priority AA sector: •  +1.5% (to 5%) immediate damage. •  +25% continuous damage. •  +1 flak burst per salvo. −10% aircraft preparation time. −15% reload time of Airstrike armament..
4	Furious 1st fire / flood   −10% Main battery reload time 2nd etc. (up to 5), each   −5% Main battery reload time	Manual Secondary Battery Aiming −10% secondary battery reload time. −10% secondary battery dispersion. When firing at a manually selected target: dispersion gradually improves from -25% to -50%.	Close Quarters Combat -10% reload time of main battery if an enemy ship is spotted within secondary range.	Emergency Repair Expert Damage Control Party  and Repair Party : +1 charge (each). +10% action time . ★★	Concealment Expert -10% detectability range of the ship.	Fire Prevention Expert -10% risk of fire. Three fires maximum. ★★
Key: ★★★ - Extremely Useful      ★★ - Frequently Useful      ★ - Occasionally Useful     No stars - Not Useful

Consumables

Viribus Unitis equips the following consumables:

• Slot 1: Damage Control Party 
• Slot 2: Repair Party 

Camouflage

As a premium ship, Viribus Unitis comes with Default permanent camouflage and a set of permanent combat bonuses.

Signals

Recommended Signal Flags
Combat
Charlie Kilo +5% ship HP; +2.5% squadron HP.	Juliet Yankee Bissotwo -20% to flooding duration. ★★★	India Yankee -20% to fire duration. ★★★	Hotel Yankee -20% to damage received when ramming the enemy. +50% to damage dealt when ramming the enemy. ★	Victor Lima +1% chance for HE bombs and shells with a caliber above 160mm causing a fire. +0.5% chance for bombs and smaller shells causing a fire. +4% chance of torpedoes causing flooding.	India X-Ray +1% chance for HE bombs and shells with a caliber above 160mm causing a fire. +0.5% chance for bombs and smaller shells causing a fire. ★
Juliet Whiskey Unaone +15% chance of causing flooding.	Mike Yankee Soxisix +5% to secondary battery maximum firing range. -5% to maximum dispersion of secondary battery shells. -5% to secondary battery loading time.	November Echo Setteseven +5% continuous AA damage at all ranges. +5% damage from flak bursts.	Sierra Mike +5% to the ship's maximum speed. ★★	November Foxtrot -5% reload time on all consumables. ★	India Delta +20% to the amount of HP recovered when Repair Party  is used. ★★★
X-Ray Papa Unaone +10% action time of a Smoke Generator .	Sierra Bravo +10% action time of Hydroacoustic Search  -10% reload time of Defensive AA Fire .

Gallery

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  Premium

Historical Info

Viribus Unitis, 1910

Construction

Builder: Stabilimento Tecnico Triestino, Trieste, Italy

Laid down: 24 July 1910

Launched: 24 June 1911

Commissioned: 5 December 1912

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Specifications

20,014 tons displacement, normal

21,595 tons displacement, full

152.2m length

27.2m beam

8.9m draft (full load)

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Machinery

Twelve (12) Yarrow Boilers

Four (4) Parsons geared steam turbines

2,000 tons coal

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Performance

20 knots at 27,000 shp

4,200 nautical miles at 10 knots

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Armor

Main belt: 280mm

Upper belt: 180mm

Decks: 36mm with 48mm slopes

Bulkheads: 130mm

Barbettes: 280mm

Turrets: 200mm

Conning tower: 280-250mm

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Armament

Main

Twelve (4x3) 30.5cm G. L/45 K10

Secondary

Tweleve (12x1) 15cm G. L/50 K10

Eighteen (18x1) 7cm G. L/50 K10

Torpedoes

Four (4) 533mm torpedo tubes

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Complement

1,087

File:PICTURE.JPG

CAPTION.

History

SMS Viribus Unitis  was an Austro-Hungarian dreadnought battleship, the first of the Tegetthoff class. "Viribus Unitis", meaning "With United Forces", was the personal motto of Emperor Franz Joseph I.
Viribus Unitis was ordered by the Austro-Hungarian Navy in 1908 and was laid down in Stabilimento Tecnico Triestino shipyard in Trieste on 24 July 1910. Viribus Unitis was launched from the shipyard on 24 June 1911 and was formally commissioned into the Austro-Hungarian Navy on 5 December 1912.
During World War I, Viribus Unitis took part in the flight of the German warships SMS Goeben and Breslau. In May 1915, she also took part in the bombardment of the Italian port city of Ancona. Viribus Unitis was sunk by a limpet mine planted by Raffaele Rossetti, an Italian engineer and military naval officer of the Regia Marina on 1 November 1918.

Design

The Tegetthoff-class were the first and only dreadnought battleships of the K.u.K. Kriegsmarine. They were designed in response to the efforts of Archduke Franz Ferdinand and Navy Chief of Staff Rudolf Montecuccoli to modernize the Austro-Hungarian fleet in the face of their rivals, the much more powerful Regia Marina of Italy.

The ‘Dreadnought revolution’ offered the small Austrian fleet a chance to close the gap, as both fleets would be forced to re-start construction of their battlelines. The design process for the first of Austria’s dreadnoughts began in October 1908 under the naval architect Siegfried Popper, and was accelerated by the news that Italy was also moving towards its first dreadnought – Dante Alighieri, which would be laid down on 6 June 1909 and be the first battleship with triple turrets.

The Tegetthoff-class weighed in at 20,014 tons normal and 21,595 tons at full load, with an overall length of 152.2 meters (151 meters by the waterline) and a beam of 27.3 meters – making them fairly ‘stubby’ ships. A unique quirk of these battleships was the inclusion of a ram bow. The propulsion systems were powered by twelve Yarrow-type boilers arranged in two boilers rooms, each containing six boilers (three across, two deep). These fed four Parsons steam turbines, which generated 25,000 shp for a design top speed of 20 knots – although this was not possible to achieve in service.

The main armament was formed by twelve ‘30.5cm/45’ (actually 42.6) in four triple superfiring turrets (A-B-X-Y). These guns fired 450 kg 4crh APC shells at a muzzle velocity of 800 m/s, with a maximum ballistic range of 22,000 meters at +20° elevation (the maximum elevation of the guns). The shells, which had a high-quality cap design for the era, were capable of penetrating 475mm of Krupp Cemented armor at a range of 6,000 meters, falling to 272mm at 10,000 meters. Maximum firing rate was 2 rounds/minute per gun. The secondary battery was made up of twelve casemate-mounted ‘15cm/50’ (actually 149.1mm/47), which fired 45.5 kg shells (APC or HE) at rate of six rounds per minute. Also included was eighteen ‘7cm/50’ (actually 66mm/47) anti-torpedo boat guns, which fired 4.5 kg HE shells at a rate of 15-20 rounds/minute. Fire control arrangements for all weapon systems remained relatively simple, being loosely patterned off of German methods.

The main armor belt of the ship was 280mm thick, and made of Witkowitz improved Krupp cemented armor – a unique variation of the standard Krupp cemented armor, the best of its type used in the First World War. The armor belt extended the entire length of the citadel (was closed by 160mm plates), and extended almost to the bow and stern with 150mm plates (extreme plates on stern and stem were 110mm thick). The upper portion of the armor belt was 180mm thick, and its extensions to the stern and stem were 110mm thick. Casemate armor was 180mm thick, and covered by 30mm armor plate. The main armor deck was 36mm thick, and connected to the bottom of the main armor belt via 48mm thick turtleback armor slopes. Main battery turrets had 200mm faces, 280mm sides and rears, and a 60mm roof. The barbettes were 280mm thick.

On the whole, the ships appeared well armed and armored – they were quite modern in appearance, too. However, the Tegetthoff'-class was riddled with numerous design flaws that severely reduced their fighting capacity, to below that of contemporary dreadnoughts. The ships were not very stable, and were not suited to operations in the open sea. On trials it was found that the ships would heel over at 19° in high-speed turns – and that the righting arm (i.e., the maximum angle from which the ship could recover) was only 25°. Not only did this mean that turning would expose the unarmored underside of the ship to enemy fire, but also that such turns would be impossible in the event of significant damage due to the risk of capsizing. This was largely the result of the ships being too small for their armament and needed to be 2,500 tons larger. This also led to the warping of longitudinal frames and the keel below the main battery turrets, due to their weight being more than the hull could handle. Additionally, they proved unable to reach their planned top speed of 20 knots – in service it was found impossible to work up past 17.5 knots, rendering them the slowest dreadnoughts of their era.

The armor scheme itself also carried numerous flaws, primarily through unprotected gaps in the armor – such as the space between the barbette and gunhouse, or for the copula holding the turret rangefinder, as well as the armor deck where the overly-large openings for the funnels could allow even small anti-torpedo boat guns to penetrate into the engine room. The funnel uptakes were also entirely unarmored. The main battery also represented an additional weakness, as the Tegetthoff, unlike any foreign dreadnought, did not use interrupted hoists, increasing the risk of flashback, and ammunition stored in the handling room (used as a ready ammunition room) was found to be at risk of detonation from near misses to the ship.

Flaws in the armament were not limited to the above. The triple turrets were not well balanced, and as a result required ammunition to be reserved on the ready racks at the back of the turret to help balance the weight of the guns. Additionally, as it was impossible to ventilate the turret while it was in action, the gun crews only had enough oxygen for 15 minutes of action. The casemate for the 15cm battery lacked any ventilation in the first place, which meant they would be forced to go out of action as soon as any smoke entered their compartments The result of these flaws was to render the Tegetthoff-class largely unsuited for combat with other warships, making them one of the worst dreadnought battleships ever built.

Service

In-game historical inaccuracies

• Actual rate of fire of the main battery guns is three rounds per minute, not two.
• Firing range of the 150 mm secondary guns is actually 15 km, not a measly 4.3.
• Viribus Unitis was never painted in disruptive camouflage.
• Viribus Unitis is represented in her 1915-16 refit, when she received four 7 cm AA guns on her 'B' and 'X' turrets. The actual name of these AA mounts is Škoda 7 cm K16 BAG (BAG = Ballon-Abwehr Geschutze or anti-balloon gun).
• Montecucculin Green camouflage is missing.
• Two 8 mm Schwarzlose M.07/12 machine guns, one mounted atop each armored cupola with rangefinder on the starboard and port sides of the ship, are missing.

Historical Gallery

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  SMS Viribus Unitis during the 1910s

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  A line drawing of Viribus Unitis, lead ship of the Tegetthoff class

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  Model of Viribus Unitis in the Museum of Military History, Vienna

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  Viribus Unitis in 1914

• 

  Jugoslavija, the former Viribus Unitis, sinking

References

1. SMS Viribus Unitis - Wikipedia
2. Tegetthoff-class battleship - Wikipedia

Ship Change Log

See here for links to Update notes.

• Available for testing by supertesters in the game starting from Update 0.7.12.

Testing Changes

• November 19, 2018:
  • Preliminary characteristics.

• Update 0.8.0.2:
  • Sigma decreased from 1.8 to 1.65.
  • The parameters of the "Repair Party" consumable were changed:
    • Casemate (non-citadel) damage recovery reduced from 50% to 40%.
    • HP recovery after taking damage to the citadel increased from 10% to 33%.
• First available for purchase in the Premium Store in Update 0.8.8.
• Update 0.10.0:
  • The firing range of the secondary battery was increased to 4.3 km.
• Update 12.5:
  • Sigma value increased from 1.8 to 1.9.
  • Main battery reload time reduced from 30 to 29 seconds.

Ships of Europe

Battleships