Type D escort ship

No.2 on 26 February 1944 at Tokyo Bay
Class overview
Name:	No.2 class escort ship
Builders:	Yokosuka Naval Arsenal Fujinagata Shipyards Harima Zōsen Corporation Hitachi Zōsen Corporation Ishikawajima Heavy Industries Kawasaki Shipbuilding Corporation Mitsubishi Heavy Industries Tōkyō Ishikawajima Shipyard
Operators:	Imperial Japanese Navy Republic of China Navy Soviet Navy People's Liberation Army Navy
Preceded by:	Ukuru class
Cost:	5,363,000 JPY
Built:	1943–1946
In commission:	1944–1987
Planned:	203
Completed:	67
Cancelled:	136
Lost:	26
Retired:	41
General characteristics
Type:	Escort ship
Displacement:	740 long tons (752 t) standard
Length:	69.5 m (228 ft)
Beam:	8.6 m (28 ft 3 in)
Draught:	3.05 m (10 ft)
Propulsion:	1 shaft, geared turbine engines, 2,500 hp (1,864 kW)
Speed:	17.5 knots (20.1 mph; 32.4 km/h)
Range:	4,500 nmi (8,300 km) at 16 kn (18 mph; 30 km/h)
Complement:	160
Sensors and processing systems:	Type 22-Go radar Type 93 sonar Type 3 hydropnhone
Armament:	As built : 2 × 120 mm (4.7 in)/45 cal DP guns 6 × Type 96 25 mm (0.98 in) AA machine guns (2×3) 12 × Type 3 depth charge throwers 1 × depth charge chute 120 × depth charges From 1944 : as above, plus 1 × 80 mm (3.1 in) mortar

The Type D escort ships (丁型海防艦, Tei-gata kaibōkan^?) were a class of ships in the service of the Imperial Japanese Navy during World War II. The Japanese called them "Type D" coast defence ships, and they were the sixth class of Kaibōkan (Kai = sea, ocean, Bo = defence, Kan = ship), a name used to denote a multi-purpose vessel.

The Type D, like the Ukuru-class and Mikura-class, were dedicated to the anti-aircraft and anti-submarine role.

On 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 plan was to build a basic escort ship of around 800 tons, with a simple design for easy construction. 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 result was the Ukuru class, and a scaled-down model of the Mikura class, which became the "Type C" and "Type D" escort classes.

Because of Japan's deteriorating war situation, the Type D class was a further simplification of the Ukuru design and were built to the same design as the Type C escort ship. However, due to a shortage of diesel engines to power both groups of vessels, the Type D were powered by turbine engines. This gave a slight increase in speed, from 16.5 to 17.5 knots, but a reduction in range and endurance, 4500 miles at 16 knots instead of 6500 miles. The Type D was the only Kaibokan type to use turbines.