Duguay-Trouin

Duguay-Trouin

Duguay-Trouin

France

III Rank

Battle rating:

AB	RB	SB
4.7	4.7	4.7

Class:

PREMIUM

Light cruiser

Purchase:1 600

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Description

The Duguay-Trouin-class, Duguay-Trouin, 1944 is a premium gift rank III French light cruiser with a battle rating of 4.7 (AB/RB/SB), a lead ship of her class. She was introduced in Update "Sky Guardians".

General info

Survivability and armour

Armourfront / side / back

Citadel20 / 20 / 20 mm

Main fire tower30 / 30 / 30 mm

Hull16 mm (steel)

Superstructure8 mm (steel)

Number of section9

Displacement8 760 t

Crew578 people

The ship has a significant advantage in terms of survivability due to the size of its crew, with 578 sailors it is one of the largest in the BR. The ammunition racks are located deep below the waterline and are protected by additional plating, which makes ammunition explosions very unlikely to occur. Moreover, the turrets and ammo elevators are equipped with 30 mm armour, which can reduce fragmentation damage caused by near-misses.

The ship's large size also serves as a form of protection as its hull is divided into 9 sections, a feature typically found on heavy cruisers, reducing damage from both torpedoes and bombs.

However, like other ships in its BR, the Duguay-Trouin does not have armour that can directly stop high-calibre SAP or HE shells. Typically for the light cruisers it is also unable to withstand damage from multiple enemy warships.

Mobility

Speedforward / back

AB71 / 34 km/h

RB61 / 29 km/h

The mobility can be described in one word: average. The rudder turn speed varies between 5.4 seconds (not upgraded) to 4.05 seconds (aced crew with maximum leadership), which is somewhat slower than most of the light cruisers of the BR when not upgraded, but the same as all the competitors when fully aced. Guns can easily keep up with the turn rate thanks to their high horizontal targetting speed.

Mobility Characteristics
Game Mode	Upgrade Status	Maximum Speed (km/h)		Turn Time (s)	Turn Radius (m)
		Forward	Reverse
AB	Stock	___	___
	Upgraded	71	34
RB/SB	Stock	___	___
	Upgraded	61	29

Modifications and economy

Repair cost

AB3 089

RB2 579

Crew training10 000

Experts180 000

Aces590

Research Aces710 000

Reward for battleAB / RB / SB

2 × 340 / 600 / 50 %

2 × 148 / 148 / 148 %

Modifications

Seakeeping	Unsinkability	Firepower
Dry-Docking Rudder Replacement Propeller Replacement Engine Maintenance	Damage Control Division Fire Division Smokescreen Shrapnel Protection Ventilation New Pumps Ammo Wetting	Anti-Air Armament Targeting 155 mm M1924 HE-TF 75mm_oea_mle1925_navy_he_time_fuse_ammo_pack Auxiliary Armament Targeting 155 mm M1924 SAP Primary Armament Targeting Improved Rangefinder

Armament

Primary armament

4 х Turret2 x 155 mm/50 model 1920 gun

Ammunition300 rounds

Vertical guidance-10° / 40°

Four twin turrets provide an one of the highest damage outputs in the BR, comparable only with some of the US destroyers. While the low rate of fire can be an issue under some circumstances, the size of the explosive filler in both: HE and SAP shells more than make up for it. The gun comes equipped with three types of shells:

• M1924 HE - large explosive filler, contact fuse, best against soft-skinned targets and external modules on the enemy warships
• M1924 SAP - good explosive filler, best against lightly-armoured targets, will dive into the ship to reach the internal modules
• M1924 HE-BF - smallest explosive filler of the three, base fuse, particularly good when hitting a highly angled target, will dive deeper into the ship bellows than SAP, but also is more prone to over-penetration and has less of a penetrative capability against a parallel target

The ship lacks any dedicated anti-air shells or AP shells that could penetrate heavy armour.

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
M1924 HE	HE	51	51	51	51	51	51
M1924 HE-BF	HE	87	78	64	53	45	34
M1924 SAP	SAPBC	142	126	104	87	73	55

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%
M1924 HE	HE	864	59	0	0.1	6.16	79°	80°	81°
M1924 HE-BF	HE	870	56.5	0.015	7	2.9	79°	80°	81°
M1924 SAP	SAPBC	870	56.5	0.01	7	3.67	48°	63°	71°

Secondary armament

4 х Turret75 mm/50 model 1922 gun

Ammunition100 rounds

75 mm mle 1924 are located on each side of the funnels

Having just two 75 mm secondary guns per side, equipped with an HE shells with contact fuse, secondary armament shouldn't be relied upon. They reload every 4 seconds, which is insufficient for easy dealing with manoeuvring torpedo boats.

Mounts have an ability to engage targets up to 85° vertical guidance, what would make them perfect against high altitude bombers, but this is severely limited by the lack of HE-TF or HE-VT shells. In effect the gunfire has primarily have a psychological effect against enemy airplanes, as the probability of directly hitting at ranges where 75 mm would provide an additional protection is negligible.

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
OEA Mle 1925	HE	8	8	8	8	8	8
HE-TF OEA Mle 1925	HE-TF	8	8	8	8	8	8

Shell details
Ammunition	Type of warhead	Velocity (m/s)	Projectile mass (kg)	Fuse delay (m)	Fuse sensitivity (mm)	Explosive mass (TNT equivalent) (g)	Ricochet
							0%	50%	100%
OEA Mle 1925	HE	850	5.93	0	0.1	450	79°	80°	81°
HE-TF OEA Mle 1925	HE-TF	850	5.93	0	0.1	450	79°	80°	81°

Anti-aircraft armament

6 х Turret40 mm Bofors L/60 Mark 3 gun

Ammunition2000 rounds

Belt capacity4 rounds

Fire rate160 shots/min

20 х Turret20 mm/70 Oerlikon Mk.II autocannon

Ammunition1800 rounds

Belt capacity60 rounds

Fire rate450 shots/min

Anti-air battery on the aft superstructure with two 40 mm Bofors and three 20 mm Oerlikon

The vessel comes with multiple anti-air guns spread all throughout the ship, giving it an excellent coverage of both: short-range 20 mm and medium-range 40 mm guns. The 40 mm in particular offer 360° degree horizontal and -7°/+90° vertical leaving no dead zones for the enemy dive bombers to approach. The 20 mm guns are limited to -3°/+65° vertical, offering the best defence to the port and starboard.

Usage in battles

The Duguay-Trouin is a very effective cruiser in its BR and lower, but has little means of responding against heavy cruisers from a higher BRs. It's a gun-centric ship, that can output a significant amount of damage even with the HE shells, but where it shines is the damage output from SAP shells compared to a similar shells from other vessels.

The ship is best used for pushing enemy points, out-ranging enemy destroyers and picking off problematic, but lightly-armoured targets. What it should avoid are direct exchanges of fire with the enemy heavy cruisers, or getting too close to the enemy ships armed with torpedoes, in particular Japanese Long Lance.

Pros and cons

Pros:

• Very good damage output from the main guns
• Effective anti-air cover
• Good survivability with very well protected ammo racks

Cons:

• Very limited armour protection
• Very limited capability to deal with a heavily-armoured target due to the lack of AP shells
• Lack of HE-TF or HE-VT shells
• No torpedoes

History

The Duguay-Trouin-class was developed from the 1915 proposal for a new class of cruisers, the first to be built domestically in France since 1906. Designated Project 171 ships were originally to be much smaller and cheaper, armed with the 138.6 mm guns, but the reveal of the British E-class along with the American Omaha-class in 1920 forced French designers into a larger, better-armed and faster ships armed with the 155 mm guns. Just the increase in speed alone, from 30 to 34 knots, doubled the required shaft horse power from ~53 000 shp to ~100 600 shp.

Typically for the Treaty cruisers it enjoyed a minimal protection, accounting for just 2% of displacement. Cruisers of the time were described as "eggshells armed with hammers", being able to stop WW1-era 4 inch guns, but inadequate for the guns of the interwar period. Cruisers of the time were designed to outrun the ships they couldn't outgun. That said though: Duguay-Trouin-class was built with survivability in mind. The double-shell hull was subdivided with 17 transverse watertight bulkheads. Each of the four boiler rooms enjoyed a fully redundant subsystems. Similarly steering gear was fully electrically powered, but it had a manual backup. Electrical systems were also highly redundant, with turbogenerators located in the aft engine room near rear turrets, central engine room and below the bridge superstructure. Generators could be run individually or coupled. Later ships of the class included an additional diesel generators for an even higher degree of redundancy. Petrol and aviation fuel was stored in a special isolated tanks high in the stern of the ship, ensuring that any damage to the tanks wouldn't impact the vessel.

The ship was praised for its excellent sea-keeping qualities, an exceptional turning circle of just 750 m at 28 knots, a low silhouette, spacious armoured bridge, along with the flexibility and reliability of the machinery. The key criticism of the vessel was its high centre of gravity once the fuel load was depleted, resulting in roll of up to 18° during turns.

Interestingly ship design included space reserved for a passive hydrophone system along with the ultrasound pinger, but after the failed tests of the system on a smaller vessels, plans for the refit were abandoned.

The ship's namesake is René Duguay-Trouin (1673–1736), French privateer and Vice-Admiral. He became famous for his command during the War of the Spanish Succession, including the victory during the Battle at The Lizard, Battle of Rio de Janeiro and a capture of over 300 ships by 1709.

Media

Skins

• Skins and camouflages for the Duguay-Trouin from live.warthunder.com.

See also

Related development

• Primauguet

External links

• [Devblog] French Navy: light cruiser Duguay-Trouin
• [Wikipedia] Duguay-Trouin-class cruiser
• [Wikipedia] French cruiser Duguay-Trouin (1923)
• [uboat.net] FR Duguay-Trouin of the French Navy - French Light cruiser of the Duguay-Trouin class - Allied Warships of WWII
• [Navypedia] DUGUAY TROUIN light cruisers (1926)
• Jordan John and Jean Moulin. 2013. French Cruisers 1922-1956. Annapolis Maryland: Naval Institute Press.

France light cruisers
Duguay-Trouin-class	Duguay-Trouin · Primauguet
	Jeanne d'Arc*
	Emile Bertin*
	* Unique ship

France premium ships
Motor torpedo boats	VTB-9 · VLT-2
Destroyers	Panthere · Tornade · Aigle · Le Triomphant
Light cruisers	Duguay-Trouin
Heavy cruisers	Dupleix
Battleships	Courbet