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World of Warships Supertest: Pan-American Tier V Premium Battleship Rio de Janeiro

4 min read

Historical background

Rio de Janeiro, better known as Agincourt was a dreadnought battleship built in the United Kingdom. She was laid down in September 1911 and launched in 1913. The thing is that initially, she wasn’t meant to serve in the Royal Navy.

Initially, the ship was part of the South American naval arms race, meant to be sold to Brazil as Rio de Janeiro. However, due to various political and economical reasons, the sale never concluded. Enters the Ottoman Empire that happened to hear about that new Dreadnought which was still under construction. The Ottomans wanted to buy the ship and rename her as Sultan Osman buuuuut… World War I happened. The British government retracted on the sale and seized the ship to reinforce the Royal Navy. This ended up biting the allies in the arse as the Ottomans were fairly pissed about losing a shiny very well-armed battleship and as such, they decided to join the Central Powers.

When it comes to the ship characteristics, Brazil wanted something really impressive and Agincourt doesn’t disappoint here. Her main battery was composed of no less than fourteen 305 mm guns in seven twin turrets, all on the centerline of the ship. At the time, it was the biggest number of main battery guns ever fitted on a Dreadnought. When firing a full broadside, the blast was so great that nearby ship crews were wondering if she didn’t detonate.

As strong as the Agincourt was, her career turned out to be fairly short. The only real action the ship ever witnessed was during the battle of Jutland in 1916.

The ship was placed in reserve at Rosyth in March 1919. After unsuccessful attempts to sell her to the Brazilian Government, she was listed for disposal in April 1921 but was used for experimental purposes later that year. The Royal Navy then planned to convert her into a mobile naval base and she was stripped in preparation for the conversion, which would have included the removal of five of her seven turrets with their barbettes converted into storage and workshops. Nos. 2 and 5 turrets would have been retained. In the end, she was sold for scrap on 19 December 1922 to comply with the tonnage limitations of the Washington Naval Treaty, although she was not broken up until the end of 1924.

If you want to learn more about Rio de Janeiro, here is a video from Drachinifel covering it:

Ship’s preview

Ship’s commemorative flag

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.

Modules

Hull
Engine
Gun Fire Control System
Main battery

icon_module_Hull_installed

Rio de Janeiro

icon_module_Engine_installed

Propulsion: 34 000 HP

icon_module_Suo_installed

‎‎Mk V mod. 1

icon_module_Artillery_installed

305 mm/45 Mk.XIII on a 12in “Special” mount

General Characteristics

TierVIII
Health48 400 HP
Torpedo Damage Reduction14 %
Displacement31 860 tons
Dimensions
Overall length203.28 m
Beam28.53 m
Overall height (keel to the highest point on the ship)24.0 m
Freeboard4.0 m
Main Armament
Maximum Firing Range16.100 km
305 mm/45 Mk.XIII on a 12in “Special” mount7 x 2 305 mm
Secondary Armament
Maximum Firing Range4.300 km
152 mm/50 BL Mk.XIII on a PXI mount
152 mm/50 BL Mk.XIII on a shielded mount
76 mm/50 QF Mk.I on a PIV mount
14 x 1 152 mm
4 x 1 152 mm
10 x 1 76 mm
Maximum speed22.0 knots
Turning Circle Radius670 m
Rudder Shift Time13.4 s
Surface Detectability14.74 km
Air Detectability10.48 km
Detectability After Firing Main Guns in Smoke11.38 km

Main Armament

7 x 2 305 mm/45 Mk.XIII on a 12in “Special” mount
 Maximum Firing Range19.540 km
 Reloading Time30.0 s
180 Degree Turn Time30.0 s
Optimal firing angles at the front34°
Optimal firing angles at the rear36°
Sigma1.7 sigma
Maximum Dispersion221 m
Shells
Type of Projectile HE – 305 mm HE Mk IIa
Alpha Damage5 200
Penetration capacity 76 mm
Explosion size1.69
Fire chance62 %
Projectile Speed831 m/s
Air Drag0.439
Projectile Mass386.0 kg
Type of ProjectileAP – 305 mm AP Mk VIa
Alpha Damage8 100
Projectile Speed831 m/s
Air Drag0.439
Projectile Mass389.8 kg
Projectile Krupp2 187
Projectile Detonator0.015 s
Detonator threshold51 mm
Ricochet Angles45° – 60°

Secondary Armament

14 x 1 152 mm/50 BL Mk.XIII on a PXI mount
4 x 1 152 mm/50 BL Mk.XIII on a shielded mount
Maximum Firing Range4.300 km
Reloading Time10.0 s
Sigma1.0 sigma
Shells
Type of ProjectileHE – 152 mm HE 4 CRH
Alpha Damage2 200
HE penetration25 mm
Explosion Size0.58
Chance to Cause Fire12 %
Projectile Speed914 m/s
Air Drag0.315
Projectile Mass45.3 kg
10 x 1 76 mm/50 QF Mk.I on a PIV mount
Maximum Firing Range4.300 km
Reloading Time5.0 s
Sigma1.0 sigma
Shells
Type of ProjectileHE – 76 mm HE Mk27
Alpha Damage1 100
HE penetration13 mm
Explosion Size0.19
Chance to Cause Fire4 %
Projectile Speed823 m/s
Air Drag0.47
Projectile Mass5.9 kg

Consumables

Slot 1
Slot 2
Damage Control Party
consumable_PCY009_CrashCrewPremiumWork time: 120 s
Cooldown: 80 s
Repair Party
Number of charges: 4
Work time: 28 s
Cooldown: 80 s
HP regeneration speed: +0.5%/s
Casemate damage regeneration: 50%
Citadel damage regeneration: 10%

The Armor

External armor protection:

Front and rear armor protection of the middle section:

Turtleback:

Citadel armor protection:

Turrets armor protection:

Hidden armor protection inside the bow and stern:

Personal Opinion

Compared to Agincourt, Rio de Janeiro is a lot more focused on the main battery with faster reload, better sigma, range, and stronger HE shells. Overall, it definitely looks like a very strong ship, especially with the short AP fuse to slap cruisers, strong HE shells, and otherwise huge salvo size.

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