BILL PIPPIN COLLECTION
No. 11863. Nakajima B5N2 "Kate" ("TAIC 6" c/n 2194) Technical Air Intelligence Center
Photograph from H.J. Nowarra

Nakajima B5N2

03/31/2013. Remarks by Johan Visschedijk: "Designed to a 1935 requirement, and already in service for four years when Japan entered the war, the Nakajima B5N was in 1941 without question the best carrier-borne torpedo-bomber in the world. Powered by a Nakajima Hikan radial engine, the low-wing three-crew monoplane with inwards-retracting wide-track landing gear was exceptionally clean, and first flew in January 1937. The following year production B5N1 aircraft were embarking in Japan's carriers and shore-based units were deployed in China.

In 1939 the improved B5N2 appeared with a more powerful Sakae 11 engine in a smaller cowling, although armament and bomb-load were unchanged, and this version remained in production until 1943. When Japan attacked the USA the B5N2 had wholly replaced the B5N1 with operational units, and 144 B5N2s were involved in the fateful attack on Pearl Harbor; within the next 12 months aircraft of this type sank the American carriers USS Hornet, Lexington and Yorktown.

Given the reporting name "Kate" by the Allies, the B5N certainly earned the respect of the Americans, and in all the major carrier battles of the Pacific War attracted the undivided attention of defending fighters. With its puny defensive armament of a single machine gun and laden with a large bomb or torpedo, however, the B5N began to suffer very heavily, and although the type was fully committed during the Solomons campaign the survivors were withdrawn from combat after the Philippine battles of 1944. Thereafter, on account of their excellent range, they were assigned to antisubmarine and maritime reconnaissance duties in areas beyond the range of Allied fighters. Production of all B5Ns reached 1,149."

Nakajima B5N2

10/31/2023. Remarks by
Johan Visschedijk: "Built in 1943, this "Kate" was fitted with a Type H-6 Air-to-Surface Vessel radar (also referred to as Type 64), developed at the Oppama Naval Air Technical Depot. Coded "KEB306" the aircraft was assigned to the new Kōkūtai 931, established at Saeki Base, Japan, February 1, 1944. The 931 was an anti-submarine patrol and convoy escort unit, part of the General (Combined) Escort Force.

Nakajima B5N2
(IJN: "KEB306") (Johan Visschedijk Collection)

During and after the Battle of Saipan (largest of the Northern Mariana Islands), June 15 to July 9, 1944, US forces found a huge amount of military equipment. On the airfield Aslito the abandoned "Kate" "KEB306" was found. The TAIU-POA (Technical Air Intelligence Unit - Pacific Ocean Areas) shipped it, together with thirteen "Zekes" and 37 engines, on the escort carrier USS Copahee (CVE-12) to the USA on July 8, it arrived at NAS San Diego, California, on July 28,1944.

Nakajima B5N2
(IJN: "KEB306") (Johan Visschedijk Collection)

The aircraft were transported to the Technical Air Intelligence Center (TAIC) at NAS Anacostia, Maryland, where the "Kate" and a number of "Zekes" were restored to flying condition. The "Kate" first flew in the USA on November 16, 1944. A month later, December 13, 1944, it was transferred to the Tactical Test Division at NAS Patuxent River. Coded "TAIC 6", it was used there to evaluate the effectiveness of the radar equipment against US naval vessels off the Delaware coast, with the equipment being operated by the Naval Radio Laboratory. It returned to the TAIC at NAS Anacostia on April 27, 1945.

In October 1945 the "Kate" and a "Zeke" were attached to The Navy’s Flying Might at NAS Wildwood, Rio Grande, a group set up as a travelling display to take part in nationwide Victory Loan promotions across the USA. Believed to have been on static display at the World's Fair of Aviation, Offutt Field, Fort Crook, Omaha, Nebraska in July 1946. The "Kate" "TAIC 6" was scrapped in 1946."

Nakajima B5N2


Created March 31, 2013