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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.1,2 This allowed a maximum of eight 8" guns to be carried.1,2 These were authorized under the 1923 - 19241,3 / 1924 - 19252 Program.1

Aircraft

There was one air compressed Gagnotto catapult for the three aircraft carried.1,2 Two of the aircraft were stored in a hanger below the A turret.1,2 The aircraft used were the Piaggio P6, Macchi M41, CRDA Cant 25, and the Imam Ro43.1

Armament

  Elevation Rate of Fire Shell Weight Range
8" / 203.2 mm L/50 Ansaldo Model 19241
203 mm L/50 Model 19242
8" L/503
45°1,2,3 3 rpm2 276 lb1
113 kg2, 125 kg
30,000 yards2
100 mm L/47 Model 19102 85°2      

The torpedo mounts were located between the funnels.1

Engines

There were two forward spaces that held four boilers and sent exhaust out the forward funnel and drove the outside shafts.1,2 A similar setup was in the aft space and served the aft funnel and drove the inner shafts.1,2

Ships

Trento

  • Manufacturer: Orlando at Leghorn3, OTO at Leghorn2, OTO at Livorno1
  • April 18, 1924: Order placed.1
  • February 8, 1925: Laid down.1,2,3
  • October 4, 1927: Launched.1,2,3
  • April 19293, April 3, 1929: Completed.1,2,3
  • April 1929: Flagship of the Cruiser Squadron.1
  • June - October 10, 1929: Cruise to South America.1
  • 1932: Far East.1
  • June 30, 1932: Sailed to La Spezia.1
  • 1937 - 1938: Two 100 mm L/47 twin mounts and all the 12.7 mm machine guns were removed.2 Four 37 mm L/54 twin mounts were added.2
  • September 1939: Flagship of 3rd Division, 2nd Squadron.1
  • June 1940: Supported mine laying vessels in Sicilian Narrows.1
  • July 1940: Battle of Punto Stilo / Calabria.1,2
  • November 12, 1940: At Taranto during British carrier raid.1 Hit by bomb that didn't explode.1
  • November 1940: Battle of Cape Teulada.1
  • March 1941: Battle of Cape Matapan.1,2
  • March 1942: Battle of Sirte.2
  • 1942: Four 20 mm L/60 guns added.1,2
  • June 15, 1942: During attempt to intercept Malta bound convoy was hit by a torpedo from a Beaufort flow by the No. 217 Squadron.1 Was immobilized.1 Four hours later hit by torpedo from HMS Umbra and sank.1,2

Trieste

  • Manufacturer: Stab. Tecnico at Trieste3, STT2, STT at Trieste1
  • April 11, 1924: Order placed.1
  • June 19253, June 22, 1925: Laid down.1,2,3
  • October 24, 1926: Launched.1,2,3
  • December 21, 1928, March 19303: Completed.1,2,3
  • October 1929: Flagship of 1st Naval Squadron.1
  • June 18, 1935 - February 15, 1938: Flagship of 3rd Division.1
  • 1937 - 1938: Two 100 mm L/47 twin mounts and all the 12.7 mm machine guns were removed.2 Four 37 mm L/54 twin mounts were added.2
  • March 1941: Battle of Cape Matapan.2
  • November 21, 1941, November 19422: Heavily damaged by torpedo from HMS Utmost.1,2 Sailed to Messina.1,2
  • November 1941 - mid 1942: Repairs.1
  • 1943: Six / Eight2 20 mm L/60 guns added.1
  • April 10, 1943: Sunk by USAAF B-24 raid on La Maddalena, Sardinia.1,2

Specifications

  Trento class
Crew 7231,3, 723 - 7812
Displacement 10,000 tons3, 10,344 tons2, 10,511 tons1
Displacement - Loaded 13,334 tons2, 13,548 tons1
Physical Characteristics  
Length 645'3, 646' 2"1,2
196.96 m1,2
Length - Water Line 636'3
Length - Between Perpendiculars 623' 4"1,2, 624'3
190 m1,2
Beam 67' 6"1,3, 67' 7"2
20.6 m1,2
Draft / Height 19'3, 22' 4"1,2
6.8 m1,2
Performance  
Speed 35 knots1,3, 36 knots2
Range at 16 knots 4,160 nautical miles1
Armament 8" / 203.2 mm L/50 Ansaldo Model 1924 twin turrets1, 203 mm L/50 Model 1924 twin turrets2, 8" L/503: 41,2, 83
Anti-Aircraft 3.9" / 100 mm L/45 OTO Model 1924 twin mounts1, 100 mm L/47 Model 1910 twin mounts2, 3.9" L/473: 81,2, 123
40 mm L/39 Vickers pom-poms1, 40 mm L/392: 41,2
12.7 mm machine guns1,2: 41,2
Torpedo Tubes 21"1,3, 533 mm2: 2 mounts 4 tubes each1,2, 83
Aircraft 23, 31,3
Armor  
Barbettes 6 cm - 7 cm2
Belt - Main 3"3
7 cm1,2
Bulkheads 4 cm - 6 cm2
Control Tower 3"3
4 cm - 10 cm2, 10 cm1
Deck - Main 2"3
2 cm - 5 cm2, 5 cm1
Turrets 3"3
10 cm1,2
Engines  
Boilers 123
Yarrow: 121,2
Shafts 41,2,3
Turbines Parsons geared2,3, Parsons SR geared1
HP 150,0001,2,3
Oil 2,120 tons1, 2,214 tons2, 3,000 tons3
  Trieste
Crew  
Displacement 30,339 tons2, 10,505 tons1
Displacement - Loaded 13,326 tons2, 13,540 tons1
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