|   | |
| Class overview | |
|---|---|
| Name | ST-class armored boat | 
| Builders | Mitsubishi Heavy Industries, Yokohama | 
| Operators |   | 
| Preceded by | Sōkōtei-class | 
| In service | 1940–1945 | 
| General characteristics | |
| Type | Armored boat | 
| Length | 11 m (36.09 ft) o/a [1] | 
| Beam | 2.0 m (6.56 ft) [1] | 
| Draught | 1.1 m (3.61 ft) [1] | 
| Installed power | 150 hp [1] | 
| Propulsion | Diesel engine [1] | 
| Speed | 9.65 knots (17.9 km/h) [1] | 
| Armament | 1 x 37 mm tank gun [1] | 
The ST-class was a type of armored boat of the Imperial Japanese Army that saw service during World War II. [2] [1] [3] She was developed in 1940 (Showa 15) mainly for riverine patrol in China, [1] a role that was previously served by the Soukoutei-class armored boat. The prototype was 11 meters long with a beam of 2.00 meters and a draught of 1.10 meters. Her speed was 9.65 knots. [1] All ships were built at the Yokohama shipyard of Mitsubishi Heavy Industries [1] She was armed with a 37 mm gun (jp:狙撃砲). [1]