Ruggiero di Lauria

13.3

Ruggiero di Lauria

Battleship | Italy | Tier X

Tech Tree Position

General

Purchase price34,650

Hit Points79,200

Main Battery

457 mm/45 Mk.II in a turret4 х 2 pcs.

Rate of Fire2 shots/min.

Reload Time30 sec.

Rotation Speed6 deg./sec.

180 Degree Turn Time30 sec.

Firing Range19.25 km.

Maximum Dispersion209 m.

Chance of Fire on Target Caused by HE Shell0 %

AP Shell457 mm AP Mk II

Maximum AP Shell Damage14,900

Initial AP Shell Velocity762 m./s.

AP Shell Weight1506 kg.

Maximum SAP Shell Damage16,600

Initial SAP Shell Velocity757 m./s.

Secondary Armament #1

135 mm/45 Model 1938 on a Model 1938 mount8 х 2 pcs.

Firing Range7.3 km.

Rate of Fire5.61 shots/min.

Reload Time10.7 sec.

AA Defense

135 mm/45 Model 1938 on a Model 1938 mount8 х 2 pcs.

. . . Average Damage per Second59.2

. . . Firing Range3.99 km.

37 mm/54 Breda Model 1939 on a quadruple mount6 х 4 pcs.

. . . Average Damage per Second114.6

. . . Firing Range3.51 km.

37 mm/54 Model 1938 on a Model 1938 mount10 х 2 pcs.

. . . Average Damage per Second116

. . . Firing Range3.51 km.

20 mm/70 Scotti Model 1941 on a sextuple mount20 х 6 pcs.

. . . Average Damage per Second124

. . . Firing Range2.01 km.

Maneuverability

Maximum Speed35 knot

Turning Circle Radius1 000 m.

Rudder Shift Time17 sec.

Concealment

Surface Detectability Range15.19 km.

Air Detectability Range12.53 km.

Battle Levels

12345678910

13.3

Ruggiero di Lauria

Battleship | Italy | Tier X

Tech Tree Position

General

Purchase price34,650

Hit Points79,200

Main Battery

457 mm/45 Mk.II in a turret4 х 2 pcs.

Rate of Fire2 shots/min.

Reload Time30 sec.

Rotation Speed6 deg./sec.

180 Degree Turn Time30 sec.

Firing Range19.25 km.

Maximum Dispersion209 m.

Chance of Fire on Target Caused by HE Shell0 %

AP Shell457 mm AP Mk II

Maximum AP Shell Damage14,900

Initial AP Shell Velocity762 m./s.

AP Shell Weight1506 kg.

Maximum SAP Shell Damage16,600

Initial SAP Shell Velocity757 m./s.

Secondary Armament #1

135 mm/45 Model 1938 on a Model 1938 mount8 х 2 pcs.

Firing Range7.3 km.

Rate of Fire5.61 shots/min.

Reload Time10.7 sec.

AA Defense

135 mm/45 Model 1938 on a Model 1938 mount8 х 2 pcs.

. . . Average Damage per Second59.2

. . . Firing Range3.99 km.

37 mm/54 Breda Model 1939 on a quadruple mount6 х 4 pcs.

. . . Average Damage per Second114.6

. . . Firing Range3.51 km.

37 mm/54 Model 1938 on a Model 1938 mount10 х 2 pcs.

. . . Average Damage per Second116

. . . Firing Range3.51 km.

20 mm/70 Scotti Model 1941 on a sextuple mount20 х 6 pcs.

. . . Average Damage per Second124

. . . Firing Range2.01 km.

Maneuverability

Maximum Speed35 knot

Turning Circle Radius1 000 m.

Rudder Shift Time17 sec.

Concealment

Surface Detectability Range15.19 km.

Air Detectability Range12.53 km.

Battle Levels

12345678910

X

34,650

Ruggiero di Lauria — Italian Tier X battleship.

A fast battlecruiser armed with eight 457 mm guns. The project is based on ideas introduced in 1921 by Italian naval engineer Ferdinando Cassone. In addition to its remarkable armament and displacement, both quite advanced for that era, the project stood out for its innovative anti-torpedo defense system and two-tiered power plant.

Ruggiero di Lauria was first released for sale on 16 August 2023 as part of the Steel Will event. She was added to the Armory on 06 December 2023 with the release of Update 12.11, and is available for 31,000 Steel .

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 ()
457 mm/45 Mk.II in a turret	2	30	209			14,900		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 ()
Ruggiero di Lauria	79,200	19	457	4	8	20/10/6/8				0	0

	IDS_SHIP_PARAM_SUO_INCREASE_DIST (%)	Maximum Firing Range (km)		Research price (exp)	Purchase price ()
SDT 10		0		0	0

	Maximum Speed (knot)		Research price (exp)	Purchase price ()
Propulsion: 235,000 hp	35		0	0

Compatible Upgrades

Slot 1
Slot 2
Slot 3
Slot 4
Slot 5
Slot 6

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.

Tier X premium Italian battleship Ruggiero di Lauria defies most of the expectations of Italian battleships. While the tech tree battleships share inaccurate main armaments with lots of smaller-caliber SAP shells and a longer reload, Ruggiero di Lauria has accurate main guns that shoot fewer, but larger-caliber, shells with a normal reload.

Armament

Ruggiero di Lauria carries eight 457 mm guns in four twin turrets. Although her 30-second turret traverse is fast for a Tier X battleship, her 19.25 km base firing range is one of the lowest in her tier. Even with her Spotting Aircraft active, her main battery range would still be average at best. Unlike Cristoforo Colombo, she has an average 30-second reload, but with only eight guns her rate of fire and damage per minute are low. However, her guns are scarily accurate for their size, with the same battlecruiser dispersion as Alaska and Thunderer, with an average 1.8 sigma.

Like the tech tree Italian battleships, Ruggiero di Lauria fires SAP and AP shells rather than HE. Her SAP deals an impressive 16,600 damage per shell and can penetrate up to 114 mm plating, and has the same improved penetration angles as Cristoforo Colombo. Like other SAP shells, they cannot set fires and may be less effective against sharply angled battleship armor, but they have higher damage and increased armor penetration compared to same-caliber HE shells. Her AP shells are identical to those fired by St. Vincent, with 14,900 damage per shell and reduced fuse times. Although its damage is high for the tier, it is the second lowest of the Tier X 457 mm-armed battleships, only beating Kremlin.

Both her AP and SAP shells can overmatch 30 mm plating, making her guns a very scary threat to any cruiser she faces. Unless they have thicker icebreaker or belt armor, they cannot angle to her AP shells. And even if her SAP doesn’t overmatch, the improved penetration angles and high penetration mean it is still unlikely to bounce. Battleships can be more resilient to her SAP if it hits their thicker belt armor, but they will still take heavy damage through their superstructure regardless of angle. Due to the larger caliber, both her SAP and AP shells have a 10% damage cap against destroyers. Even a single SAP shell will still hurt, but she can’t delete a destroyer like Venezia can.

Like Giuseppe Verdi a tier lower and her Tier X cruiser counterpart Napoli, Lauria has SAP secondaries. She uses eight of the same 135 mm turrets as Attilio Regolo’s main battery, four on each side of the ship. However, she does not get any sort of improved range or dispersion, and is stuck with a terrible 10.7-second reload. They can penetrate up to 38 mm armor if they hit, but are not worth investing into. At most, they’ll provide a bit more damage against thinner targets that wander too close.

Ruggiero di Lauria’s ASW defenses are typical for a Tier X battleship. She has two charges that reload in 30 seconds each, with an 11 km range and two bombs per charge. Each bomb deals up to 4900 damage.

Consumables

Ruggiero di Lauria’s consumable suite is typical for a battleship, but small compared to many of her Tier X counterparts. She carries a Damage Control Party, Repair Party, and a Spotting Aircraft, all with normal stats. Unlike the high-tier tech tree Italian battleships, she does not have an Exhaust Smoke Generator.

Ruggiero di Lauria’s Repair Party has an action time of 28 seconds with an 80-second cooldown. It heals up to 14% of her total HP per charge with four charges base. Unlike many battleship heals, Ruggiero di Lauria’s repairs up to 33% of any citadel damage taken, rather than 10%.

A spotter plane is fairly common on battleships, but sorely needed on Ruggiero di Lauria. It increases her main battery firing range by 20% for 100 seconds, with a 240-second cooldown.

Maneuverability

Ruggiero di Lauria is fast, but not particularly agile. Her 35-knot top speed is the fastest of any Tier X battleship, although Bourgogne, Incomparable, and St. Vincent will outrun her when their Engine Boosts are active. With the Sierra Mike signal and Brisk commander skill active, she can reach 40.4 knots. She can easily keep pace with (or even outrun) her team’s cruisers and battleships, and reposition around the map as needed.

Her 17-second rudder shift is decent for a battleship, but her 1000 m turning circle is large for Tier X. Although she has an impressive torpedo belt, torpedoes will still be a threat as she will struggle to avoid them without earlier spotting from her allies.

Survivability

Ruggiero di Lauria is squishy for a battleship. Her 79,200 HP is well below average for Tier X, and even lower than some Tier IX battleships. As a result, she also heals less HP per Repair Party charge than many other battleships. Although her Repair Party heals more citadel damage than many other battleships, her low health means citadels will still hurt. Her 39% torpedo damage reduction is high for Tier X, but she should still avoid torpedoes whenever possible rather than rely on her torpedo belt.

Ruggiero di Lauria’s armor scheme is weird, with a very oddly-shaped citadel. She has the typical 32 mm bow and stern plating of most high tier battleships, with a thicker 120 mm central and rear deck but a 32 mm forward deck. She has narrow bands of 50 and 150 mm belt armor above her citadel. Lauria’s exposed citadel extends above the waterline, with an even higher section under the superstructure that is only 350 mm thick. Most of her citadel deck is 100 mm thick and vulnerable to AP bombs, but only 38 mm thick under her superstructure. Although still protected against most bombs, Hakuryū, Sekiryu, and Manfred von Richthofen’s upgraded AP bombs can still reach it and cause critical damage. Sometimes, she will bounce every shell that hits her, and sometimes she will eat a citadel at a random angle. Between her exposed citadel and low health, she must be careful when showing broadside to an enemy battleship.

Although she is a squishy target, her excellent concealment will help keep her alive. With a full concealment build, her surface concealment can get as low as 12.3 km, one of the lowest in her tier and lower even than some cruisers. Her aerial detection is less impressive at 10.15 km, but still decent for a battleship of her size. She has the exact same concealment as Thunderer.

Anti-aircraft

Like many other Italian ships, Ruggiero di Lauria does not have good AA defenses. Where most Tier X battleships have a 5.8 km long-range aura, Ruggiero di Lauria’s only reach 4.6 km, with the lowest long range damage of any high tier battleship. She also only produces four low-damage flak clouds. Her mid- and short-range auras have more normal ranges, but the damage from both is still underwhelming.

She has the option to swap her Spotting Aircraft for a Catapult Fighter for a marginal boost to her defenses, but they will still be ineffective against most Tier VIII carriers, much less Tier X or supercarriers. With the exception of flak damage, even Cristoforo Colombo has better AA defenses than Ruggiero di Lauria. Planes will be a problem for Ruggiero di Lauria, and she will rely on allied air cover for protection. Even Tier VIII carriers won’t be afraid of her AA.

Battle performance

Ruggiero di Lauria is a squishy, stealthy cruiser-killer. Like Thunderer and the British battlecruisers, she’s better suited for flanks than tanking damage head on. With her overmatch and accurate main battery, she poses a substantial threat to any broadside cruiser or battleship, and even destroyers will not be happy getting hit by her SAP. Her secondaries can deter smaller ships from venturing too close, but will not defend against a suicide torpedo rush and aren’t worth focusing on.

She should use her high speed and excellent concealment to quickly reach a flanking position where she can force a crossfire with her more durable allies. However, her vulnerable citadel, low health, and poor AA defenses mean that taking those positions comes with risk. Even a Tier VIII carrier can focus her down when isolated, and her oddly-shaped citadel means she can still take heavy damage even when angled or kiting. Damage she can’t really afford to take.

While Giuseppe Verdi prefers close range engagements and the tech tree battleships overcome their poor accuracy by throwing more shells at a target, Ruggiero di Lauria is a longer range sniper. She rewards good aim and positioning, but relies on her captain to truly take advantage of her strengths.

Pros:

• SAP main battery shells with improved penetration angles
• Improved main battery dispersion
• Both SAP and AP overmatch 30 mm plating
• Short-fuse AP shells
• Secondaries fire SAP shells
• Fast
• Excellent concealment
• Repair Party heals more citadel damage

Cons:

• Low health
• Vulnerable, oddly-shaped citadel
• Short main battery range
• Ineffective secondaries
• Poor AA defenses
• Large turning circle
• Cannot set fires

Research

As a premium ship, Ruggiero di Lauria has no module upgrades to research.

Optimal Configuration

Like most other battleships, Ruggiero di Lauria should prioritize skills and upgrades that increase her survivability and main battery performance. Although they fire SAP shells with increased damage and penetration, her secondaries are not worth investing skill points or upgrades into.

Upgrades

The recommended upgrades are:

• Slot 1: Main Armaments Modification 1
• Slot 2: Damage Control System Modification 1 
• Slot 3: Aiming Systems Modification 1
• Slot 4: Damage Control System Modification 2 or Propulsion Modification 1
• Slot 5: Concealment System Modification 1 
• Slot 6: Main Battery Modification 3

In Slot 6, players that feel her limited main battery range is too limited can swap Main Battery Modification 3 for Gun Fire Control System Modification 2 . This allows her to play at a more comfortable distance and provide better fire support to the opposite flank, but comes at the expense of lowering her damage potential.

Commander Skills

Like all other Italian ships, Unique commander Luigi Sansonetti will be a good fit in Ruggiero di Lauria. His Far Reach talent that increases her main battery range after killing an enemy ship will be a very welcome boost to her short gun range. His Rapid Fire talent provides a 15% boost to her reload upon earning the Confederate achievement, which further increases her already potent main battery potential. Although less reliable than in the cruisers, she can sometimes activate his Concealed Reserves talent too, for longer Repair Party duration.

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

Ruggiero di Lauria equips the following consumables:

• Slot 1: Damage Control Party 
• Slot 2: Repair Party  – 4 charges
• Slot 3: Spotting Aircraft  – 4 charges or Catapult Fighter  – 3 charges

Camouflage

As a premium ship, Ruggiero di Lauria comes with Default permanent camouflage and a set of permanent combat bonuses.

Signals

Recommended Signal Flags
Combat
Juliet Charlie -100% to the risk of magazine detonation. ★★	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. +5% to the risk of your ship's magazine detonating.
Juliet Whiskey Unaone +15% chance of causing flooding. +5% to the risk of your ship's magazine detonating.	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 .

Note: Use of the Juliet Charlie signal makes detonation impossible.

Gallery

Historical Info

Ruggiero di Lauria, October 1921 (designed)

Construction

Builder:

Laid down:

Launched:

Commissioned:

Decommissioned:

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Specifications

45,000 - 57,000 tons displacement

256 m length

32 m beam

9.5 m draft

---

Machinery

18 boilers, 12,000 HP per boiler (in groups of three)

4 turbines, 50,000 HP each

2 propellers

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Performance

35 - 40 knots (proposed) at 216,000 shaft horsepower

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Armor

Main belt: 150 - 456 mm (sloped belt)

Citadel: 350 mm

Deck: 120 - 178 mm

Turrets: 170 - 450 mm

Conning tower: Unknown

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Armament

Main

8 (4x2) 456 mm guns

Secondary

6 (2x3) 152 mm secondary battery turrets

Unknown additional casemate-mounted secondaries

Anti-Aircraft

Unknown

Torpedoes

None

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Aircraft

N/A

Ferdinando Cassone’s October 1921 design in Rivista Marittima for a large battlecruiser with 456 mm main guns.

In October 1921, Italian engineer Ferdinando Cassone submitted a design to Rivista Marittima, a monthly magazine by the Italian Navy — “La fase attuale dell’evoluzione delle navi da gattaglia (studio critico)” (“The current phase of the evolution of battleships (a critical study)”). The article’s purpose was to explore what was possible for a modern battleship of a specific displacement, within the limits of what was feasible at the time. Two similar but separate designs were discussed, one displacing 45,000 tons and the other 57,000 that sacrificed the centerline secondary mounts for a more compact protected area and thicker armor. The ship was to be 265 meters long with a beam of 32 meters (similar to the dimensions of the Iowa-class battleships).

The design called for eight 456 mm guns in four twin turrets, with two triple 152 mm secondary turrets superfiring over the B and X main turrets. This would have resulted in a substantially heavier broadside compared to the last class of Italian battleships laid down, the Francesco Caracciolo-class, and would be bested only by Ferrati’s quadruple-turret super-dreadnought designs with sixteen 381 mm turrets. The secondary battery was designed to have a similar broadside weight as Francesco Caracciolo, but with improved firing arcs.

In order to maximize armor protection and reduce overall length, the boiler spaces were positioned over the engine rooms, and called for up to eighteen boilers placed in groups of three, and four turbines. The turbines would be capable of producing 216,000 shp, and Cassone claimed a possible top speed of 35 to 40 knots, although 33 to 35 knots would have likely been the practical limit.

The main armor belt was to be 456 mm thick, and inclined at 15°. Due to the unique two-tier propulsion design, it had to extend one deck further up the hull, although it was thinner at 350 mm. The belt continued even higher, gradually decreasing to 150 mm, where it joined with the main 350 mm armor deck to create turtleback-like slopes. The heavily sloped main belt armor was designed to detonate shells and direct the explosive force down toward the water. This reduced the overall thickness needed, saving weight and allowing the design to reach its proposed speeds. Above the main deck, the top of the boilers and their uptakes were protected by an 80 mm layer of armor at a nearly 40° angle, which increased back to 350 mm at the base of the funnels.

A cross-section sketch showing the proposed torpedo defense system, with void spaces to capture and vent explosive gasses.

Cassone’s design included a unique torpedo defense system. It incorporated two large void spaces on the side of the hull, essentially gas-filled tanks that would allow a torpedo to penetrate into them and detonate before reaching the citadel spaces. The explosive gasses would be directed through vents in the citadel area and emerge near the ship’s funnels rather than damage the ship’s critical spaces.

Although an innovative design for the time, it was not actually a serious proposal for construction. Instead, it was intended as a template for discussions on the future of capital ship designs. The project was never implemented due to Italy’s limited capital ship-building capabilities, and the Washington Naval Conference beginning the next month put an end to any plans for new capital ship construction for the foreseeable future. Although the stacked propulsion and vented torpedo defense system would never actually appear in any later capital ship designs, the design reflected what was considered necessary for Italian battleship designs of the time — high speed, without sacrificing armor or weapons for combat with other warships.

Historical Gallery

References

Ship Change Log

See here for links to Update notes.

• Available for testing by supertesters in the game starting from Update 12.6.

Testing Changes

• DevBlog 444:
  • Preliminary characteristics.
    • Note: The DevBlog states that Ruggiero di Lauria's AP shells have standard characteristics. They actually have a short fuse timer of 0.015 s.

• Update 12.7:
  • Available for purchase in the Armory, in a special bundle for 36,000 steel that includes the Made of Steel permanent camouflage.
• Update 12.11:
  • Available for purchase in the Armory for 31,000 steel.

Ships of Italy

Battleships