Battle of Arafura Sea

Battle of Arafura Sea
	Part of Operation Trikora
	Diorama depicting the battle Indonesian postage stamp commemorating the battle
Date	15 January 1962
Location	Arafura Sea
Result	Dutch victory
Belligerents
Indonesia	Netherlands
Commanders and leaders
Sudomo; Yos Sudarso †; Wiratno †; Memet Sastrawiria †; Tjiptadi †;	L.E.H. Reeser
Units involved
Indonesian Navy	Royal Netherlands Navy
Strength
3 Jaguar-class fast attack craft RI Matjan Tutul; RI Matjan Kumbang; RI Harimau; Transporting 150 infiltrators	2 S-class destroyers HNLMS Evertsen; HNLMS Kortenaer; 1 Friesland-class destroyer HNLMS Utrecht; Supported by a P-2 Neptune plane
Casualties and losses
1 torpedo boat sunk; 2 torpedo boats disabled; 21–39 killed; 52–55 captured	None

The Battle of Arafura Sea (Indonesian: Pertempuran Laut Aru), also known as the Battle of Vlakke Hoek (Dutch: Slag bij Vlakke Hoek), was a naval battle in the Arafura Sea near Etna Bay in Western New Guinea on 15 January 1962, between Indonesia and the Netherlands. The battle is commemorated in Indonesia with a national day of remembrance, and the engagement remains the last official naval battle of the Royal Netherlands Navy.