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Italy's Naval flag

Italy's Trento class Cruisers

Design

The Trento class were built within the restrictions of the Washington Treaty. This allowed a maximum of eight 8" guns to be carried. These were authorized under the 1923 - 1924 / 1924 - 1925 Program.

Aircraft

There was one air compressed Gagnotto catapult for the three aircraft carried. Two of the aircraft were stored in a hanger below the A turret. The aircraft used were the Piaggio P6, Macchi M41, CRDA Cant 25, and the Imam Ro43.

Armament

  Elevation Rate of Fire Shell Weight Range
8" / 203.2 mm L/50 Ansaldo Model 1924
203 mm L/50 Model 1924
8" L/50
45° 3 rpm 276 lb
113 kg, 125 kg
30,000 yards
100 mm L/47 Model 1910 85°      

The torpedo mounts were located between the funnels.

Engines

There were two forward spaces that held four boilers and sent exhaust out the forward funnel and drove the outside shafts. A similar setup was in the aft space and served the aft funnel and drove the inner shafts.

Ships

Trento

  • Manufacturer: Orlando at Leghorn, OTO at Leghorn, OTO at Livorno
  • April 18, 1924: Order placed.
  • February 8, 1925: Laid down.
  • October 4, 1927: Launched.
  • April 1929, April 3, 1929: Completed.
  • April 1929: Flagship of the Cruiser Squadron.
  • June - October 10, 1929: Cruise to South America.
  • 1932: Far East.
  • June 30, 1932: Sailed to La Spezia.
  • 1937 - 1938: Two 100 mm L/47 twin mounts and all the 12.7 mm machine guns were removed. Four 37 mm L/54 twin mounts were added.
  • September 1939: Flagship of 3rd Division, 2nd Squadron.
  • June 1940: Supported mine laying vessels in Sicilian Narrows.
  • July 1940: Battle of Punto Stilo / Calabria.
  • November 12, 1940: At Taranto during British carrier raid. Hit by bomb that didn't explode.
  • November 1940: Battle of Cape Teulada.
  • March 1941: Battle of Cape Matapan.
  • March 1942: Battle of Sirte.
  • 1942: Four 20 mm L/60 guns added.
  • June 15, 1942: During attempt to intercept Malta bound convoy was hit by a torpedo from a Beaufort flow by the No. 217 Squadron. Was immobilized. Four hours later hit by torpedo from HMS Umbra and sank.

Trieste

  • Manufacturer: Stab. Tecnico at Trieste, STT, STT at Trieste
  • April 11, 1924: Order placed.
  • June 1925, June 22, 1925: Laid down.
  • October 24, 1926: Launched.
  • December 21, 1928, March 1930: Completed.
  • October 1929: Flagship of 1st Naval Squadron.
  • June 18, 1935 - February 15, 1938: Flagship of 3rd Division.
  • 1937 - 1938: Two 100 mm L/47 twin mounts and all the 12.7 mm machine guns were removed. Four 37 mm L/54 twin mounts were added.
  • March 1941: Battle of Cape Matapan.
  • November 21, 1941, November 1942: Heavily damaged by torpedo from HMS Utmost. Sailed to Messina.
  • November 1941 - mid 1942: Repairs.
  • 1943: Six / Eight 20 mm L/60 guns added.
  • April 10, 1943: Sunk by USAAF B-24 raid on La Maddalena, Sardinia.

Specifications

  Trento class
Crew 723, 723 - 781
Displacement 10,000 tons, 10,344 tons, 10,511 tons
Displacement - Loaded 13,334 tons, 13,548 tons
Physical Characteristics  
Length 645', 646' 2"
196.96 m
Length - Water Line 636'
Length - Between Perpendiculars 623' 4", 624'
190 m
Beam 67' 6", 67' 7"
20.6 m
Draft / Height 19', 22' 4"
6.8 m
Performance  
Speed 35 knots, 36 knots
Range at 16 knots 4,160 nautical miles
Armament 8" / 203.2 mm L/50 Ansaldo Model 1924 twin turrets, 203 mm L/50 Model 1924 twin turrets, 8" L/50: 4, 8
Anti-Aircraft 3.9" / 100 mm L/45 OTO Model 1924 twin mounts, 100 mm L/47 Model 1910 twin mounts, 3.9" L/47: 8, 12
40 mm L/39 Vickers pom-poms, 40 mm L/39: 4
12.7 mm machine guns: 4
Torpedo Tubes 21", 533 mm: 2 mounts 4 tubes each, 8
Aircraft 2, 3
Armor  
Barbettes 6 cm - 7 cm
Belt - Main 3"
7 cm
Bulkheads 4 cm - 6 cm
Control Tower 3"
4 cm - 10 cm, 10 cm
Deck - Main 2"
2 cm - 5 cm, 5 cm
Turrets 3"
10 cm
Engines  
Boilers 12
Yarrow: 12
Shafts 4
Turbines Parsons geared, Parsons SR geared
HP 150,000
Oil 2,120 tons, 2,214 tons, 3,000 tons
  Trieste
Crew  
Displacement 30,339 tons, 10,505 tons
Displacement - Loaded 13,326 tons, 13,540 tons
Physical Characteristics  
Length  
Length - Water Line  
Length - Between Perpendiculars  
Beam  
Draft / Height  
Performance  
Speed  
Range  
Armament  
Anti-Aircraft  
Torpedo Tubes  
Aircraft  
Armor  
Belt - Main  
Control Tower  
Deck - Main  
Turrets  
Engines  
Boilers  
Shafts  
Turbines  
HP  
Oil  

Sources:

  1. Cruisers of World War Two An International Encyclopedia, M. J. Whitley, 1995
  2. Conway's All the World's Fighting Ships 1922-1946, Robert Gardiner, 1987
  3. Janes' Fighting Ships of World War II, 1989
20th Century American Military History Crucial Site