W-13-class minesweeper

	No.13 in 1933
Class overview
Name	No.13 class minesweeper
Builders	Fujinagata Shipyards; Mitsui Bussan; Ōsaka Iron Works;
Operators	Imperial Japanese Navy
Preceded by	No.1 class
Succeeded by	No.7 class
Subclasses	No.13 class (Project Number I3A); No.17 class (Project Number I3B);
Cost	1,330,000 JPY (in 1931)
Built	1931 – 1936
In commission	1933 – 1945
Planned	6
Completed	6
Lost	5
Retired	1
General characteristics No.13-class
Displacement	525 long tons (533 t) standard
Length	74.00 m (242 ft 9 in) overall
Beam	8.20 m (26 ft 11 in)
Draught	2.07 m (6 ft 9 in)
Propulsion	2 × triple expansion stages reciprocating engines; 2 × Kampon mix-fired boilers; 2 shafts, 3,200 shp;
Speed	20.0 knots (23.0 mph; 37.0 km/h)
Range	2,600 nmi (4,800 km) at 12 kn (14 mph; 22 km/h)
Complement	98
Armament	2 × 120 mm (4.7 in) L/45 naval guns; 2 × 13.2 mm (0.52 in) AA guns; 18 × depth charges; 2 × Type 81 depth charge projectors; 2 × paravanes or 40 × Mk.5 naval mines;
General characteristics No.17-class
Displacement	578 long tons (587 t) standard
Length	72.50 m (237 ft 10 in) overall
Beam	7.85 m (25 ft 9 in)
Draught	2.50 m (8 ft 2 in)
Propulsion	2 × Kampon geared turbines; 2 × Kampon mix-fired boilers; 2 shafts, 3,200 shp;
Speed	19.0 knots (21.9 mph; 35.2 km/h)
Range	2,600 nmi (4,800 km) at 12 kn (14 mph; 22 km/h)
Complement	94
Armament	2 × 120 mm (4.7 in) L/45 naval guns; 2 × 13 mm AA guns; 36 × depth charges; 1 × Type 94 depth charge projector; 2 × paravanes or 40 × Mk.5 naval mines;

The No.13 class minesweeper (第十三号型掃海艇,, Dai Jūsan Gō-gata Sōkaitei) was a class of minesweepers of the Imperial Japanese Navy (IJN), serving during the 1930s and World War II. 6 vessels were built in 1931-36 under the Maru 1 Keikaku. They have two sub classes, this article handles them collectively.

Class overview
No.13 in 1933
Name	No.13 class minesweeper
Builders	Fujinagata Shipyards Mitsui Bussan Ōsaka Iron Works
Operators	Imperial Japanese Navy
Preceded by	No.1 class
Succeeded by	No.7 class
Subclasses	No.13 class (Project Number I3A) No.17 class (Project Number I3B)
Cost	1,330,000 JPY (in 1931)
Built	1931 – 1936
In commission	1933 – 1945
Planned	6
Completed	6
Lost	5
Retired	1
General characteristics No.13-class
Displacement	525 long tons (533 t) standard
Length	74.00 m (242 ft 9 in) overall
Beam	8.20 m (26 ft 11 in)
Draught	2.07 m (6 ft 9 in)
Propulsion	2 × triple expansion stages reciprocating engines 2 × Kampon mix-fired boilers 2 shafts, 3,200 shp
Speed	20.0 knots (23.0 mph; 37.0 km/h)
Range	2,600 nmi (4,800 km) at 12 kn (14 mph; 22 km/h)
Complement	98
Armament	2 × 120 mm (4.7 in) L/45 naval guns 2 × 13.2 mm (0.52 in) AA guns 18 × depth charges 2 × Type 81 depth charge projectors 2 × paravanes or 40 × Mk.5 naval mines
General characteristics No.17-class
Displacement	578 long tons (587 t) standard
Length	72.50 m (237 ft 10 in) overall
Beam	7.85 m (25 ft 9 in)
Draught	2.50 m (8 ft 2 in)
Propulsion	2 × Kampon geared turbines 2 × Kampon mix-fired boilers 2 shafts, 3,200 shp
Speed	19.0 knots (21.9 mph; 35.2 km/h)
Range	2,600 nmi (4,800 km) at 12 kn (14 mph; 22 km/h)
Complement	94
Armament	2 × 120 mm (4.7 in) L/45 naval guns 2 × 13 mm AA guns 36 × depth charges 1 × Type 94 depth charge projector 2 × paravanes or 40 × Mk.5 naval mines