The C Type class were given odd numbers, while the D Type were given even numbers. They were built concurrently with the Ukuru class and the D Type-class. The design work of the C Type ships started in March, 1943, the same time as the Ukuru class. The C type escorts required approximately 20,000 man-hours each, compared to the 35,000 man-hours of the Ukuru’s and the 57,000 man-hours of the Mikura’s. The number of depth charges aboard was the same, 120, but the number of depth charge throwers was decreased from 18 to 12 and the depth charge chutes were decreased from two to one.ĭue to the simplifications of the design, a significant saving was made in construction time. The number of 4.7″ guns went from three to two. The range remained the same, 6500 miles at 14 knots. Because of the decrease in engine power, the speed fell from 19.5 knots to 16.5. They were smaller by 200 tons and the Diesel engines that propelled them were also smaller, at 1900 SHP vs 4200 for the Ukurus. The result was the Ukuru class, and a scaled down model of the Mikura class, which became the “C Type” and “D Type” escort classes.īecause of Japan’s deteriorating war situation, the C Type class was a further simplification of the Ukuru design. The first designs, for “Type A” Etorofu class and “Type B” Mikura class, still needed too many man-hours for building, so in June 1943, the Navy General Staff planned for a simplified design. The plan was to build a basic escort ship of around 800 tons, with a simple design for easy construction. In 22 April 1943, the Navy General Staff decided a mass production of escort ships, because of the urgent need to protect the convoys which were under constant attack. The C Type, like the Ukuru-class and Mikura-class, were dedicated to the anti-aircraft and anti-submarine role. The Japanese called them “C Type” ocean defense ships, and they were the fifth class of Kaibokan (Kai = sea, ocean, Bo = defense, Kan = ship), a name used to denote a multi-purpose vessel. ![]() The C Type class escort ships were a class of ships in the service of the Imperial Japanese Navy during World War II.
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