RN Bolzano

RN Bolzano

RN Trento

RN Zara

RN Bolzano

RN Trento

RN Zara

Italy

IV Rank

Battle rating:

AB	RB	SB
5.0	5.3	5.3

Class:

Heavy cruiser

Research:75 000

Purchase:250 000

Show in game

Description

The RN Bolzano, laid down on 11 June 1930, launched on 31 August 1932, completed and delivered on 19 August 1933, was a heavy cruiser based on the hull of the Trento class. RN Bolzano had several modifications and was practically a mixture of the Zara and Trento classes, featuring the powerplants and 203 mm/53 Ansaldo mod.1927 cannons of the Zara class with reduced protection on the main turrets, improved watertighting compartmentation compared to the Trento class, and other minor modifications. However, she proved to be weaker than the Zara class and therefore an almost useless upgrade. Upon entering service, RN Bolzano joined the naval forces deployed in the Mediterranean. During World War II, she participated in the Battle of Punta Stilo, in the interception of Allied ships involved in the British Operation Mincemeat, and in the Battle of Mid-August, during which she was severely damaged by a torpedo from the submarine HMS Unbroken. She would remain in the port of La Spezia and be abandoned after the armistice. On 22 June 1944, she was attacked by British and Italian assault craft, and only in April 1945 was she found, sunk and capsized by the American 5th Army and the first Italian Co-Belligerent units. She was later recovered and scrapped in 1949.

Introduced in Update "Alpha Strike", Trento-class, RN Bolzano, 1937 mixes features from RN Trento and RN Zara. The main armament is improved thanks to Zara's 203 mm cannons with a better reload, but the anti-air armament and armour protection remain mediocre. She has good manoeuvrability and speed, so it is recommended to play around hard cover such as islands to maximise survivability.

General info

Survivability and armour

Armourfront / side / back

Citadel60 / 70 / 50 mm

Main fire tower100 / 80 / 100 mm

Hull25 mm (steel)

Superstructure8 mm (steel)

Number of section9

Displacement13 885 t

Crew788 people

Talk about the vehicle's armour. Note the most well-defended and most vulnerable zones, e.g. the ammo magazine. Evaluate the composition of components and assemblies responsible for movement and manoeuvrability. Evaluate the survivability of the primary and secondary armaments separately. Don't forget to mention the size of the crew, which plays an important role in fleet mechanics. Save tips on preserving survivability for the "Usage in battles" section. If necessary, use a graphical template to show the most well-protected or most vulnerable points in the armour.

Mobility

Speedforward / back

AB80 / 34 km/h

RB68 / 29 km/h

Write about the ship's mobility. Evaluate its power and manoeuvrability, rudder rerouting speed, stopping speed at full tilt, with its maximum forward and reverse speed.

Mobility Characteristics
Game Mode	Upgrade Status	Maximum Speed (km/h)		Turn Time (s)	Turn Radius (m)
		Forward	Reverse
AB	Stock	___	___
	Upgraded	80	34
RB/SB	Stock	___	___
	Upgraded	68	29

Modifications and economy

Repair costBasic → Reference

AB9 765 → 13 212

RB9 720 → 13 151

Total cost of modifications66 900

129 900

Talisman cost1 500

Crew training72 000

Experts250 000

Aces940

Research Aces480 000

Reward for battleAB / RB / SB

430 / 600 / 100 %

166 / 166 / 166 %

Modifications

Seakeeping	Unsinkability	Firepower
Dry-Docking Research: 4 500 Cost: 8 700 330 Rudder Replacement Research: 2 500 Cost: 4 900 185 Propeller Replacement Research: 2 800 Cost: 5 400 210 Engine Maintenance Research: 3 600 Cost: 7 000 270	Damage Control Division Research: 4 500 Cost: 8 700 330 Fire Division Research: 2 500 Cost: 4 900 185 Smokescreen Research: 2 500 Cost: 4 900 185 Shrapnel Protection Research: 2 800 Cost: 5 400 210 Ventilation Research: 2 800 Cost: 5 400 210 New Pumps Research: 3 600 Cost: 7 000 270 Ammo Wetting Research: 3 600 Cost: 7 000 270	Anti-Air Armament Targeting Research: 4 500 Cost: 8 700 330 Auxiliary Armament Targeting Research: 2 500 Cost: 4 900 185 203mm_ansaldo_50_53_navy_aphebc_ammo_pack Research: 2 500 Cost: 4 900 185 100mm_it_perforante_navy_ap_ammo_pack Research: 2 500 Cost: 4 900 185 Primary Armament Targeting Research: 2 800 Cost: 5 400 210 Improved Rangefinder Research: 2 800 Cost: 5 400 210 100mm_it_dirompente_contro_aerea_navy_he_df_ammo_pack Research: 2 800 Cost: 5 400 210 Torpedo Mode Research: 3 600 Cost: 7 000 270 203mm_ansaldo_50_53_navy_he_df_ammo_pack Research: 3 600 Cost: 7 000 270 Hydroplane Research: 3 600 Cost: 7 000 270

Armament

Primary armament

4 х Turret2 x 203 mm/53 Ansaldo mod.1927 cannon

Ammunition314 rounds

Vertical guidance-5° / 45°

Provide information about the characteristics of the primary armament. Evaluate their efficacy in battle based on their reload speed, ballistics and the capacity of their shells. Add a link to the main article about the weapon: {{main|Weapon name (calibre)}}. Broadly describe the ammunition available for the primary armament, and provide recommendations on how to use it and which ammunition to choose.

Penetration statistics
Ammunition	Type of warhead	Penetration @ 0° Angle of Attack (mm)
		1,000 m	2,500 m	5,000 m	7,500 m	10,000 m	15,000 m
HE Dirompente	HE	58	58	58	58	58	58
APHEBC Perforante	APHEBC	388	327	247	189	148	105
HE-TF Contro-aerea	HE-TF	58	58	58	58	58	58

Shell details
Ammunition	Type of warhead	Velocity (m/s)	Projectile mass (kg)	Fuse delay (s)	Fuse sensitivity (mm)	Explosive mass (TNT equivalent) (kg)	Ricochet
							0%	50%	100%
HE Dirompente	HE	900	110.57	0	0.1	7.5	79°	80°	81°
APHEBC Perforante	APHEBC	900	125.3	0.03	9	3.16	48°	63°	71°
HE-TF Contro-aerea	HE-TF	900	110.57	0	0.1	7.5	79°	80°	81°

Secondary armament

8 х Turret2 x 100 mm/47 O.T.O. Mod. 1928 cannon

Ammunition1200 rounds

Some ships are fitted with weapons of various calibres. Secondary armaments are defined as weapons chosen with the control Select secondary weapon. Evaluate the secondary armaments and give advice on how to use them. Describe the ammunition available for the secondary armament. Provide recommendations on how to use them and which ammunition to choose. Remember that any anti-air armament, even heavy calibre weapons, belong in the next section. If there is no secondary armament, remove this section.

Penetration statistics
Ammunition	Type of warhead	Penetration @ 0° Angle of Attack (mm)
		100 m	1,000 m	2,000 m	3,000 m	4,000 m	5,000 m
HE Dirompente	HE	17	17	17	17	17	17
APHE Perforante	APHE	150	129	109	93	78	67
HE-TF Contro-aerea	HE-TF*	17	17	17	17	17	17

Shell details
Ammunition	Type of warhead	Velocity (m/s)	Projectile mass (kg)	Fuse delay (s)	Fuse sensitivity (mm)	Explosive mass (TNT equivalent) (g)	Ricochet
							0%	50%	100%
HE Dirompente	HE	850	13.2	0	0.1	1,300	79°	80°	81°
APHE Perforante	APHE	850	13.8	0.01	6	820	47°	60°	65°
HE-TF Contro-aerea	HE-TF*	850	13.2	0	0.1	1,300	79°	80°	81°

Anti-aircraft armament

2 х Turret40 mm/39 Vickers-Terni mod.1915/1917, Modif.1930 autocannon

Ammunition1500 rounds

Belt capacity50 rounds

Fire rate200 shots/min

2 х Turret2 x 37 mm/54 Breda Mod.32 autocannon

Ammunition3000 rounds

Belt capacity6 rounds

Fire rate200 shots/min

4 х Turret2 x 13.2 mm Breda Model 31 machine gun

Ammunition6000 rounds

Belt capacity30 rounds

Fire rate500 shots/min

An important part of the ship's armament responsible for air defence. Anti-aircraft armament is defined by the weapon chosen with the control Select anti-aircraft weapons. Talk about the ship's anti-air cannons and machine guns, the number of guns and their positions, their effective range, and about their overall effectiveness – including against surface targets. If there are no anti-aircraft armaments, remove this section.

Additional armament

Setup 116 x 533 mm steam turbined torpedo S.I. 270/533,4X7,2 Tipo I

Describe the available additional armaments of the ship: depth charges, mines, torpedoes. Talk about their positions, available ammunition and launch features such as dead zones of torpedoes. If there is no additional armament, remove this section.

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".

Pros:

Cons:

History

Describe the history of the creation and combat usage of the ship in more detail than in the introduction. If the historical reference turns out to be too long, take it to a separate article, taking a link to the article about the ship and adding a block "/History" (example: https://wiki.warthunder.com/(Ship-name)/History) and add a link to it here using the main template. Be sure to reference text and sources by using <ref></ref>, as well as adding them at the end of the article with <references />. This section may also include the ship's dev blog entry (if applicable) and the in-game encyclopedia description (under === In-game description ===, also if applicable).

Devblog

Bolzano was ordered in the late 1920s as part of a larger Italian naval rearmament program. Unlike the Trento and Zara classes however, Bolzano represented a one-off construction combining design aspects of both the older Trento as well as the more advanced Zara class. After its commissioning in 1933, Bolzano had a rather uneventful initial interwar service. Throughout World War II however, Bolzano played a significant role in various naval engagements, including the Battle of Calabria and the Battle of Cape Spartivento. During these engagements, Bolzano's design proved its worth after surviving deadly torpedo attacks on several occasions. In 1943 however, with Italy's surrender looming and the threat of German occupation imminent, Bolzano was scuttled by her own crew in the port of La Spezia to prevent her capture.

Media

Excellent additions to the article would be video guides, screenshots from the game, and photos.

See also

Links to articles on the War Thunder Wiki that you think will be useful for the reader, for example:

• reference to the series of the ship;
• links to approximate analogues of other nations and research trees.

External links

• [Devblog] RN Bolzano: The Last Stand

Ansaldo
Corvettes
Gabbiano-class	RN Gabbiano · Folaga
Destroyers
Leone-class	RN Leone · RN Tigre
Light Cruisers
Condottieri-class	RN Bartolomeo Colleoni · RN Raimondo Montecuccoli · RN Eugenio di Savoia
Heavy Cruisers
Trento-class	RN Bolzano
Battleships
Conte di Cavour-class	Novorossiysk*
	*RN Giulio Cesare before war reparation to the USSR

Italy heavy cruisers
Trento-class	RN Trento · RN Bolzano
Zara-class	RN Zara · RN Pola