HNLMS Zwaardvisch (S814) was the lead ship of the Royal Netherlands Navy's Zwaardvisch-class submarine, which was based on the British T class.

[2] Under the command of Lieutenant Hendrikus Goossens, Zwaardvisch moved to Rothesay the following month and began sea trials based out of Holy Loch until February 1944.

Arriving in Trincomalee, Ceylon, in July 1944, Zwaardvisch came under the operational control of the British Far East Fleet, and conducted a patrol through the Strait of Malacca, during which time she attacked several ships, including Kim Hup Soen and two Malaysian sailing vessels, mainly with her deck gun.

[6] The submarine had been on a patrol around Java when she received directions via radio to establish an ambush off Surabaya, where she subsequently torpedoed and sank U-168, which had been on its way to Japan to transfer important military technologies.

[7] The final months of the war were spent in the South China Sea attacking Japanese merchantmen, and patrolling the Lombok Strait.

Following the surrender of Germany in early May, the submarine returned to Britain to undertake further repairs in Dundee before transferring to Rotterdam in August 1945.