The O 9-class submarine consisted of three submarines, built for the Royal Netherlands Navy. Used for patrols in the Dutch home waters. The class comprised O 9, O 10, and O 11. Its diving depth was 60 metres (200 ft).
The O 9-class submarines were designed by J.J. van der Struyff, at the time chief engineer of the Royal Netherlands Navy (RNN).[1] Together with the submarines of the K XI class they were the first submarines designed fully in-house by the RNN, which resulted in the first indigenous Dutch submarine design.[2][3] The submarines of the O 9-class were the first Dutch submarines built with two propellers and a double hull.[4] Previous classes only had a single hull and one propeller. As a result the submarines of the O 9-class had a different external shape in comparison to previous Dutch submarine classes as they were no longer cigar shaped.[1] The submarines had a length of 54.66 meters, a beam of 5.70 meters and a draught of 3.53 meters.[5] Furthermore, each submarine had a displacement of 526 ton while surfaced and 656 ton underwater.[6] The diving depth of the O 9 class was 60 meters.[7]
The primary armament of the O 9-class submarines consisted of five torpedo tubes; two 53.3 cm torpedo tubes and three 45 cm torpedo tubes.[8][9] The 45 cm torpedo tubes were unusual since most contemporary submarines in service with foreign navies at the time did not use 45 cm torpedo tubes anymore.[10] In addition to the torpedo tubes, each submarine had a single 8.8 cm cannon and a machine gun, which could be used against planes.[6] There was also enough room in the submarine to store 10 torpedoes.[8]
The O 9-class submarines were equipped with two 6 cylinder two-stroke diesel engines made by the company Sulzer in Winterthur.[11][5] Besides the diesel engines, it also had two electric motors and 120 cells.[4] This gave a capacity of 4350 Ah and allowed the submarine to operate solely on electric power for 3 hours.[8] The engines allowed the submarines to reach 900 hp when surfaced and 500 hp underwater, which resulted in a maximum speed while surfaced of 12 kn and underwater 8 knots.[12][4]
Service historyedit
In the morning of 6 March 1940 the submarines of the O 9-class were planning to do exercises near Texel that would be filmed for propaganda purposes.[13] However, while leaving the harbor of Den Helder the O 11 got rammed by the surveillance vessel BV 3 and as a result of severe damage sunk.[14]
At the time of the German invasion O 11 was under repair in Den Helder.[7] On 14 May 1940 she was scuttled there to prevent her being captured by German forces. However the Germans raised the ship and ordered it repaired. In September 1944 O 11 was sunk in Den Helder to block the entrance of the harbour.[15]
Jalhay, P.C. (1982). Nederlandse Onderzeedienst 75 jaar (in Dutch). Bussum: De Boer Maritiem. ISBN90-228-1864-0.
Bosscher, Ph.M.; Bussemaker, H.O. (2007). Gelouterd door strijd: De Nederlandse Onderzeedienst tot de val van Java, 1942 (in Dutch). Amsterdam: De Bataafsche Leeuw. ISBN978-90-6707-614-2.
Mark, Chris (1997). Schepen van de Koninklijke Marine in W.O. II (in Dutch). Alkmaar: De Alk. ISBN90-6013-522-9.
Bosscher, Ph.M. (1984). De Koninklijke Marine in de Tweede Wereldoorlog (in Dutch). Vol. 1: Voorgeschiedenis en de verrichtingen in Nederland, de Europese wateren en het noordelijke deel van de Atlantische Oceaan tot het uitbreken van de oorlog in Azië (December 1941). Franeker: Wever. ISBN90-6135-371-8.
von Münching, L.L. (1978). Schepen van de Koninklijke Marine in de Tweede Wereldoorlog (in Dutch). Alkmaar: Alk. ISBN90-6013-903-8.
Raven, G.J.A., ed. (1988). De kroon op het anker: 175 jaar Koninklijke Marine (in Dutch). Amsterdam: De Bataafsche Leeuw. ISBN90-6707-200-1.
Further readingedit
Jalhay, P.C.; Wijn, J.J.A. (1997). Ik nader ongezien! De onderzeeboten van de Koninklijke Marine. Amsterdam: De Bataafsche Leeuw. ISBN9067074624.
External linksedit
Description of class
December 15, 2023
class, submarine, consisted, three, submarines, built, royal, netherlands, navy, used, patrols, dutch, home, waters, class, comprised, diving, depth, metres, hnlms, 9class, overviewnameo, classbuilderskoninklijke, maatschappij, schelde, flushing, nederlandsche. The O 9 class submarine consisted of three submarines built for the Royal Netherlands Navy Used for patrols in the Dutch home waters The class comprised O 9 O 10 and O 11 Its diving depth was 60 metres 200 ft HNLMS O 9Class overviewNameO 9 classBuildersKoninklijke Maatschappij De Schelde Flushing Nederlandsche Scheepsbouw Maatschappij Amsterdam Fijenoord RotterdamOperators Royal Netherlands NavyPreceded byHNLMS O 8Succeeded byO 12 classBuilt1923 1926In commission1926 1944Completed3Lost1General characteristicsTypeSubmarineDisplacement526 tons surfaced 656 tons submergedLength54 66 m 179 ft 4 in Beam5 7 m 18 ft 8 in Draught3 53 m 11 ft 7 in Propulsion2 450 bhp 336 kW diesel engines 2 250 bhp 186 kW electric motorsSpeed12 kn 22 km h 14 mph surfaced 8 kn 15 km h 9 2 mph submergedRange3 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 submergedComplement29Armament2 21 inch bow torpedo tubes 2 17 7 inch bow torpedo tubes 1 17 7 inch stern torpedo tube 1 x 88 mm gun 1 x 12 7 mm machine gun Contents 1 Design 2 Service history 3 Ships in class 4 Citations 5 References 6 Further reading 7 External linksDesign editThe O 9 class submarines were designed by J J van der Struyff at the time chief engineer of the Royal Netherlands Navy RNN 1 Together with the submarines of the K XI class they were the first submarines designed fully in house by the RNN which resulted in the first indigenous Dutch submarine design 2 3 The submarines of the O 9 class were the first Dutch submarines built with two propellers and a double hull 4 Previous classes only had a single hull and one propeller As a result the submarines of the O 9 class had a different external shape in comparison to previous Dutch submarine classes as they were no longer cigar shaped 1 The submarines had a length of 54 66 meters a beam of 5 70 meters and a draught of 3 53 meters 5 Furthermore each submarine had a displacement of 526 ton while surfaced and 656 ton underwater 6 The diving depth of the O 9 class was 60 meters 7 The primary armament of the O 9 class submarines consisted of five torpedo tubes two 53 3 cm torpedo tubes and three 45 cm torpedo tubes 8 9 The 45 cm torpedo tubes were unusual since most contemporary submarines in service with foreign navies at the time did not use 45 cm torpedo tubes anymore 10 In addition to the torpedo tubes each submarine had a single 8 8 cm cannon and a machine gun which could be used against planes 6 There was also enough room in the submarine to store 10 torpedoes 8 The O 9 class submarines were equipped with two 6 cylinder two stroke diesel engines made by the company Sulzer in Winterthur 11 5 Besides the diesel engines it also had two electric motors and 120 cells 4 This gave a capacity of 4350 Ah and allowed the submarine to operate solely on electric power for 3 hours 8 The engines allowed the submarines to reach 900 hp when surfaced and 500 hp underwater which resulted in a maximum speed while surfaced of 12 kn and underwater 8 knots 12 4 Service history editIn the morning of 6 March 1940 the submarines of the O 9 class were planning to do exercises near Texel that would be filmed for propaganda purposes 13 However while leaving the harbor of Den Helder the O 11 got rammed by the surveillance vessel BV 3 and as a result of severe damage sunk 14 At the time of the German invasion O 11 was under repair in Den Helder 7 On 14 May 1940 she was scuttled there to prevent her being captured by German forces However the Germans raised the ship and ordered it repaired In September 1944 O 11 was sunk in Den Helder to block the entrance of the harbour 15 Ships in class editThe ships were built by three different shipyards O 9 was built by the Koninklijke Maatschappij De Schelde in Flushing O 10 in Amsterdam at the Nederlandsche Scheepsbouw Maatschappij and O 11 in Rotterdam at Fijenoord shipyard 9 16 O 9 class construction data 17 18 Name Laid down Launched Commissioned DecommissionedO 9 23 September 1922 7 April 1925 18 January 1926 1 December 1944O 10 24 December 1923 30 July 1925 1 September 1926 11 October 1944O 11 24 December 1922 19 March 1925 18 January 1926 Dutch Navy 14 May 1940 scuttled German navy September 1944 sunk Citations edit a b Jalhay 1982 p 113 Bosscher 1984 pp 150 151 Raven 1988 p 88 a b c Mark 1997 p 78 a b Bosscher and Busssemaker 2007 p 86 a b Mark 1997 p 68 a b von Munching 1978 p 34 a b c Bosscher and Busssemaker 2007 p 87 a b von Munching 1978 p 33 Bosscher and Busssemaker 2007 p 24 Bosscher and Busssemaker 2007 p 29 Bosscher and Busssemaker 2007 pp 86 87 Bosscher 1984 p 185 Jalhay 1982 p 114 Mark 1997 p 79 Raven 1988 p 178 Mark 1997 pp 78 79 Jalhay 1982 pp 113 114 References editJalhay P C 1982 Nederlandse Onderzeedienst 75 jaar in Dutch Bussum De Boer Maritiem ISBN 90 228 1864 0 Bosscher Ph M Bussemaker H O 2007 Gelouterd door strijd De Nederlandse Onderzeedienst tot de val van Java 1942 in Dutch Amsterdam De Bataafsche Leeuw ISBN 978 90 6707 614 2 Mark Chris 1997 Schepen van de Koninklijke Marine in W O II in Dutch Alkmaar De Alk ISBN 90 6013 522 9 Bosscher Ph M 1984 De Koninklijke Marine in de Tweede Wereldoorlog in Dutch Vol 1 Voorgeschiedenis en de verrichtingen in Nederland de Europese wateren en het noordelijke deel van de Atlantische Oceaan tot het uitbreken van de oorlog in Azie December 1941 Franeker Wever ISBN 90 6135 371 8 von Munching L L 1978 Schepen van de Koninklijke Marine in de Tweede Wereldoorlog in Dutch Alkmaar Alk ISBN 90 6013 903 8 Raven G J A ed 1988 De kroon op het anker 175 jaar Koninklijke Marine in Dutch Amsterdam De Bataafsche Leeuw ISBN 90 6707 200 1 Further reading editJalhay P C Wijn J J A 1997 Ik nader ongezien De onderzeeboten van de Koninklijke Marine Amsterdam De Bataafsche Leeuw ISBN 9067074624 External links editDescription of class Retrieved from https en wikipedia org w index php title O 9 class submarine amp oldid 1164456056, wikipedia, wiki, book, books, library,
