NAVYPEDIA

Photo

K1

Ships

Name	No	Yard No	Builder	Laid down	Launched	Comp	Fate
K1 (ex-A)		524	P. Smit, jr., Rotterdam	8.1939	23.11.1940	10.1941	sunk 5.5.1945
K2 (ex-B)		750	N. V. Werf Gusto, Schiedam	1939	28.6.1941	11.1942	damaged 9.10.1944, never repaired
K3 (ex-C)		525	P. Smit, jr., Rotterdam	6.1939	22.3.1941	2.1942	surrendered 5.1945, to Netherlands 5.1945 (Van Speyk 6.1946)

Technical data

Displacement standard, t	1200
Displacement full, t	1420
Length, m	75.2 wl 77.9 oa
Breadth, m	10.2
Draught, m	2.90 normal 3.90 deep load
No of shafts	2
Machinery	K1, 2: 2 Germania diesels K3: 2 HKD diesels
Power, h. p.	K1, 2: 2770 K3: 1760
Max speed, kts	K1, 2: 15.5 K3: 14.5
Fuel, t	diesel oil 157
Endurance, nm(kts)	6900(12)
Armour, mm	belt: 60 - 40, deck: 35 - 20, turrets: 60, CT: 20
Armament	2 x 2 - 120/45 Mk 8, 2 x 2 - 37/80 SK C/30, 2 x 4 - 20/65 C/38, 2 x 2 - 20/65 C/38, 4 DCT, 80 mines
Electronic equipment	presumably GHG hydrophone
Complement	161

Standard scale images

Graphics

Project history

Ex-Dutch gunboats "A", "B" and "C" (7-ship series was assumed, but building of four was cancelled by Dutch Government 14.5.1940). Multi-purpose ships, capable to act against a shore and to be used as escorts, therefore had armour and dual-purpose armament (2 twin 120mm/45, 2 twin 40mm/56 mounts, 4 12.7mm MGs and 4 DCTs). Armoured belt covered about 63% of ship length, abreast machinery its thickness was 60-50mm, at ship ends 40mm, 35-20mm armoured deck was connected with its upper edge.

Ships were captured on slipways by German troops and completed under the changed design. Original Dutch main guns in turret mounts and fire control system were retained (they were similar to established on destroyer ZH1). German AA and ASW armament were installed, ships could carry mines. Instead of 3500hp Burmeister & Wain diesels, provided by original design. K1 and K2 received Germania diesels, used on VII series submarines, and K3 received Humboldt-Klockner-Deutz (HKD) diesels. Both formers and latter were less powerful and maximal speed of gunboats has appeared below designed 18kts. K2 was damaged by Allied aircraft during completion, it delayed her commission approximately for a year.

Ship protection

Main belt protected 63% of hull length, its thickness was 60-50mm abreast machinery and 40mm at ship ends. 35-20mm flat deck connected with upper edge of main belt.

Modernizations

1943, all: + 4 DCT, presumably S-Gerät sonar

Naval service

Ships were appeared rather successful and were actively used for convoys support. K1 was sunk 5.5.1945 by British aircraft at Arhus. K2 was hard damaged 28.9.1944 by British torpedo bomber off Bergen, repair was never finished; after war she was returned to the Netherlands and broken up. K3 was returned to the Netherlands and as Van Speyk served till 1960.