No.1-class patrol boat

	Minekaze, the lead ship of the class of destroyer the patrol boats were converted from.
Class overview
Name	No.1-class patrol boat
Builders	Yokosuka Naval Arsenal
Operators	Imperial Japanese Navy
Succeeded by	Matsu-class destroyer; No.1-class landing ship;
Built	1940
In commission	1940 – 1945
Planned	4
Completed	2
Canceled	2 (replaced by 4 × No.31-class patrol boats)
Lost	2
General characteristics
Type	Patrol boat
Displacement	1,270 long tons (1,290 t) standard
Length	April 1940; 102.57 m (336 ft 6 in) overall;
Beam	8.92 m (29 ft 3 in)
Propulsion	2 × Mitsubishi-Parsons geared turbines; 2 × Kampon water tube boilers; 2 shafts, 10,000 shp;
Speed	22.0 knots (25.3 mph; 40.7 km/h)
Armament	April 1940; 3 × 120 mm (4.7 in) L/45 naval guns; 2 × 533 mm (21.0 in) torpedo tubes; 2 × 533 mm torpedoes; Late 1941; 2 × 120 mm (4.7 in) L/45 naval guns; 4 × Type 96 25 mm AA guns; 2 × depth charge throwers; 18 × depth charges; 2 × landing craft and 250 troops,; or 42 × depth charges;

The No. 1-class patrol boat (第一号型哨戒艇,, Dai Ichi Gō-gata Shōkaitei) was a class of patrol boats of the Imperial Japanese Navy (IJN), serving during World War II. 2 vessels were converted from Minekaze-class destroyers in 1940.