Marushin MARS027 Imperial Japanese Navy Nakajima B5N1 "Kate" Torpedo Bomber - Aircraft Carrier Soryu, 1941 (1:48 Scale)
"Tora! Tora! Tora!"
- Predetermined Japanese signal indicating they had achieved complete surprise leading up to the aerial assault at Pearl Harbor, December 7th, 1941
The Nakajima B5N (Allied reporting name: Kate) was the Imperial Japanese Navy's standard torpedo bomber for the first years of World War II. While the B5N was substantially faster and more capable than its Allied counterparts, the TBD Devastator and Fairey Swordfish, it was close to obsolescence by the time of the Pearl Harbor Attack. Nevertheless, the B5N operated throughout the whole war. Although primarily used as a carrier-based aircraft, it was also used as a land-based bomber on occasions. The B5N had a crew of 3: pilot, navigator/bombardier/observer, and radio operator/gunner.
The B5N was designed by a team led by Katsuji Nakamura in response to a 1935 specification by the Navy for a torpedo bomber to replace the Yokosuka B4Y. Internally designated Type K by Nakajima, it successfully competed with the Mitsubishi B5M for a production contract. The first prototype flew in January 1937 and was ordered into production soon afterwards with the full designation Type 97 Carrier Attack Bomber.
The B5N soon saw combat, first in the Sino-Japanese War, where combat experience revealed several weaknesses in the original B5N1 production model. These were mainly concerned with the lack of protection that the design offered its crew and fuel tanks. Keen to maintain the high performance of the type, the Navy was reluctant to add weight in the form of armour, and instead looked to obtaining a faster version of the aircraft in the hopes of out-running enemy fighters. The B5N2 was given a much more powerful engine, and various modifications were made to streamline it. Although its performance was only marginally better, and its weaknesses remained unremedied, this version replaced the B5N1 in production and service from 1939. It was this version that would be used by the Navy in the attack on Pearl Harbor. Apart from this raid, the greatest successes of the B5N2 were the key roles they played in sinking the US Navy aircraft carriers Yorktown, Lexington and Hornet.
The B5N served as the basis for a follow-on design, the Nakajima B6N, which eventually replaced it in front-line service. The B5N continued to fly in secondary roles, such as training, target towing, and anti-submarine warfare. Some of the aircraft used for this latter purpose were equipped with early radars and magnetic anomaly detectors. B5Ns were also used as bombers during the unsuccessful defence of the Philippines in October 1944.
Wingspan: 12-3/4 inches
Length: 8-1/2 inches
Release Date: October 2008
Historical Account: "Blue Dragon" - Soryu (meaning "blue (or green) dragon") was an aircraft carrier of the Imperial Japanese Navy. She took part in the attack on Pearl Harbor and was sunk at the battle of Midway.
Soryu was built at Kaigun Kosho, Kure, Japan and commissioned on December 29th, 1937. As opposed to some earlier Japanese carriers which were redesigns on battlecruiser (Akagi) or battleship (Kaga) hulls, she was designed from the start as an aircraft carrier. At close to 65 km/h (35 kts), she was the fastest carrier in the world at launch.
At the outbreak of the Pacific War, commanded by Captain Ryusaku Yanagimoto, Soryu, in Carrier Division 2, was one of six carriers making up the Kido Butai (Striking Force) that attacked Pearl Harbor on December 7th, 1941. She launched two waves of air strikes against the US Naval base. Her first wave targeted Nevada, Tennessee, and West Virginia with armor-piercing bombs and Utah, Helena, California, and Raleigh with torpedoes, as well as attacked grounded aircraft at Barbers Point. Her second wave targeted California, Raleigh, Kaneohe and Navy Yard installations.