DE Yubari Class
Because the retirement of the domestic escort ships continued, it was decided that the new model DE would be built for power reinforcement of the Coast Guard [ie, "regional district "]. The DE Yubari class is an improved version of DE Ishikari class. 200 tons of standard displacement has been increased in order to supply the defective point.
The DE 227 Yubari was built as a prototype of the escort ship for small-sized coast patrol. As for the basic structure such as body shape, armament, and on-board devices, the Yubari class closely resembles the Ishikari class, but the total length of the ships was modified (extended) to improve habitability and navigation. On the back deck, there is a space for 20mm CIWS to be instralled at a later date.
Because coast patrol is the main duty, the anti-submarine armament ASROC on the Ishikari class was replaced with the Harpoon SSM system, putting more emphasis on the anti-warship armament.
Yubari, a 3141-ton light cruiser of innovative design, was built at Sasebo, Japan. Commissioned at the end of July 1923, she was generally employed as flagship for destroyer squadrons. Yubari's initial World War II combat operation was the attempt to capture Wake on 10-11 December 1941. Though that attack was repulsed, she participated in the capture of the island base later in the month. She served as flagship of the Port Moresby Attack Force during the Battle of the Coral Sea in May 1942. After completing a transport mission to Sonsorol Island on 27 April 1944, she was hit by a torpedo from the U.S. submarine Bluegill (SS-242). Efforts to control progressive flooding were unsuccessful, and Yubari sank the following morning.
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