There are many naval details of WWII which we do not know about. Here are a few links for ships and Dutch submarines which were in Malayan waters. There is mention of Singapore, Borneo, and local cities and towns of Malaya and Siam - Kota Bharu, Patani, etc. There is mention of Pantai Timour in Bali, Indonesia. There is mention of Station Soerabaja (Surabaya). The Dutch submarines blog webmaster also seeks help from readers re people ID, event, location and date.
External links:
http://www.dutchsubmarines.com/boats/boat_kxii.htm
http://www.dutchsubmarines.com/men/crew/men_g_tigchelaar.htm
http://www.dutchsubmarines.com/pictures/pictures_k_boats_1930s.htm
http://www.dutchsubmarines.com/pictures/pictures.htm
Dec 23 1939: Arrived in the Dutch East Indies. Transferred to the K X after a month of exercise patrols on O 20. The O 20 was sunk later in The Gulf of Siam (19 Dec 1941). Exercised on K X, then K XI, K VIII, K XVIII, and K XII in August 1940.Was off West coast of Borneo when war with Japan started (7 Dec 1941). Sailed on board K XII to Singapore, loaded torpedoes from Submarine tender (probably tender Janssens) and went on patrol off the coast of Malaya. http://www.dutchsubmarines.com/men/crew/men_g_tigchelaar.htm
Dec 12 1941: Under the command of Ltz. I H.C.J. Coumou we torpedoed a transport ship of about 8000 tons off Kota Bharu (Battle of Patani). http://www.dutchsubmarines.com/men/crew/men_g_tigchelaar.htm
O 20's deck phone, June 2002 off Kota Bharu (Malaysia). The official name of this phone is electro megaphone and it is manufactured by Brown. (Photo: © Roy Leenderts). http://www.dutchsubmarines.com/pictures/pictures_diving_o20.htm
The dive team at the bow of the Mata Ikan, June 2002 off Kota Bharu. (Photo: © Collection Roy Leenderts). From left to right: Top row: DaniĆ«l Zuidema, Klaas Brouwer, Guido Granacher, Dick Cohen and Roy Leenderts. Bottom row: Michael Lim, Simon Bok, the captain (name unknown) and Marcel Conradi. http://www.dutchsubmarines.com/pictures/pictures_diving_o20.htm
K XV arriving in Tandjong Priok (Dutch East Indies), 1945. The submarine on the right is probably the Dutch Tijgerhaai (1). (Photo: © Collection Aart Hopman). http://www.dutchsubmarines.com/pictures/pictures_kxv_wwii.htm
External links:
http://www.dutchsubmarines.com/boats/boat_kxii.htm
http://www.dutchsubmarines.com/men/crew/men_g_tigchelaar.htm
http://www.dutchsubmarines.com/pictures/pictures_k_boats_1930s.htm
http://www.dutchsubmarines.com/pictures/pictures.htm