Nagara Class, Japanese Light Cruisers

Photograph of IJN Yura, a Nagara-class light cruiser

Naval Historical Center #77698

Schematic of Nagara-class light cruiser

ONI 41-42


Tonnage 5570 tons standard displacement
Dimensions 534'9" by 48'5" by 16'
162.99m by 14.75m by 4.87m
Maximum speed       36 knots
Complement 450
Aircraft 1 Model 3 catapult
1 seaplane
Armament 7x1 5.5"/50 guns
2 3"/40 AA guns
6 machine guns
4x2 24" torpedoes
Protection 220.6 tons
1.5" (38mm) + 1" (25mm) HT belt
1.1" (28mm) HT deck
0.8" (20mm) gun shields
4-shaft Mitsubishi-Parsons-Gihon turbines (90,000 shp)
12 Kampon boilers
Bunkerage 1260 tons fuel oil
Range 9000 nautical miles (17,000 km) at 10 knots
6000 nautical miles (11,000 km) at 14 knots
1943: Two 5.5" guns removed. Torpedo armament increased to 4x4 mounts.  Light antiaircraft increased to 22 25mm/60 AA guns and 2 13mm/76 AA guns and Type 21 radar installed.

1944-9: Isuzu converted to antiaircraft cruiser with 3x2 5"/50 DP guns, 11x3, 5x1 25mm guns, and 2x2 torpedo tubes.

The Nagaras were completed in 1922-25 and resembled the earlier Kumas except for their 24” (61 cm) torpedo armament. Though these were not originally capable of firing the deadly Long Lance, which required special equipment to handle their pure oxygen supply, the class was in the process of having its torpedo tubes updated at the outbreak of war.  The conning tower was left unarmored to make room for aircraft handling facilities.

In late 1944, Isuzu was converted to an antiaircraft cruiser intended to serve as the flagship of an antisubmarine group.

Units in the Pacific:


South of Cape Camau, French Indochina

Sunk by aircraft 1944-10-26 south of Luzon


South of Cape Camau, French Indochina

Sunk by aircraft 1942-10-25 off Guadalcanal



Torpedoed 1945-4-7 by Charr


Pearl Harbor Attack Force (Nagumo), 200 miles north of Oahu

Sunk by aircraft 1944-10-26 south of Luzon


First Surprise Attack Force (Hara) at Magong, sailing for Aparri

Torpedoed 1944-8-18 east of Samar by Hardhead


Fourth Surprise Attack Force (Kubo) at Palaus, sailing for Legaspi      

Torpedoed 1944-8-7 by Croaker

Photo Gallery

Nagara class cruiser from forward quarter

U.S. Navy

ONI 41-42 page for Nagara class light cruisers

U.S. Navy

ONI 41-42 page for Nagara class light cruisers

U.S. Navy


Lacroix and Wells (1997)
Whitley (1995)

Worth (2001) (accessed 2008-12-9)

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