Dutch protected corvette Hr. Ms. Sumatra executing torpedo launching tests according to the Dutch newspaper Soerabaijasch handelsblad dated 24 May 1893

An item reported the departure from Surabaya, Dutch East Indies of the Dutch protected corvette Hr. Ms. Sumatra (1) captain lieutenant P. Heijning towards the coast of Madura, Dutch East Indies for launching tests with so-called fish torpedoes.

Note
1. Laid down at the Koninklijke Fabriek van Stoom- en andere Werktuigen, Amsterdam, Netherlands in 1888, launched on 26 April 1890 and sold to be broken up in 1907.