The K XI class was a class of three submarines, built by Fijenoord shipyard in Rotterdam for the Royal Netherlands Navy. Used for patrols in the Dutch colonial waters. The submarines diving depth was 60 metres (200 ft). All ships were still in service at the start of World War II. K XIII was scuttled while under repair at Soerabaja to prevent her being captured by the invading Japanese forces.

HNLMS K XIII
Class overview
Name	K XI class
Builders	Fijenoord, Rotterdam
Operators	Royal Netherlands Navy
Preceded by	K VIII class
Succeeded by	K XIV class
Built	1922-1926
Completed	3
General characteristics
Type	Submarine
Displacement	688 tons surfaced 828 tons submerged
Length	66.7 m (218 ft 10 in)
Beam	6.15 m (20 ft 2 in)
Draught	3.78 m (12 ft 5 in)
Propulsion	2 × 1,200 bhp (895 kW) diesel engines 2 × 327 bhp (244 kW) electric motors
Speed	17 kn (31 km/h; 20 mph) surfaced 8 kn (15 km/h; 9.2 mph) submerged
Range	3,500 nmi (6,500 km; 4,000 mi) at 8 kn (15 km/h; 9.2 mph) on the surface 25 nmi (46 km; 29 mi) at 8 kn (15 km/h; 9.2 mph) submerged
Complement	31
Armament	2 × 21 inch bow torpedo tubes 2 × 17.7 inch bow torpedo tubes 2 × 17.7 inch stern torpedo tubes 1 x 88 mm Bofors gun 1 x 12.7 mm machine gun