The ironclad HNLMS Prins Hendrik der Nederlanden was sailing to the Dutch East Indies.

The first of the unprotected Atjeh-class cruisers were under construction, and the small battleship HNLMS Koning der Nederlanden had been launched.

When Onrust Dock of 5,000 tons had been assembled in the Dutch East Indies it was said to be meant for the two armored ships.

[4] Apart from this war there was the matter of replacing the 1843 wooden dry dock that still served in the East Indies.

In May 1876 a commission to design a new dry dock for the naval base at Onrust Island was appointed.

Wichers Captain-lt and chief of the equipment department of the navy, and J. de Hoog engineer for shipbuilding at the Dutch Society of Insurers.

[5] Tideman was the designer of Batavia Dock which was still on the slipway at Untung Jawa (Amsterdam Island).

Strootman was one of the designers of Onrust Dock of 3,000 tons, which had been assembled in Surabaya and was already in service.

[8] When the ministers for the navy and the colonies visited the Koninklijke Fabriek in October 1877, substantial progress had been made.

[10] On 16 October 1878 there was a tender for unloading, assembling, riveting and finishing Onrust Dock of 5,000 tons in the Dutch East Indies.

[3] On 9 September 1879 SS Prins Hendrik arrived with parts of the dry dock.,[13][14] she had left Amsterdam on 19 July 1879.

[1] Onrust Dock of 5,000 tons consisted of a big pontoon of 100 m long and 13.50 m wide.

the model) The dock had four centrifugal pumps with a total capacity of 3,200 m3 water per hour.

In 1881 the dock serviced the 3,500t unprotected cruiser HNLMS Koningin Emma der Nederlanden, the Evertsen-class frigate Zeeland and the Watergeus.

Apart from the bigger ships she also served small warships like the Siak and commercial vessels.

The 27 August 1883 eruption of Krakatoa caused two tsunamis that hit Onrust Island.

Koningin Emma der Nederlanden was first beaten off her moorings, but stayed save.

[22] In November 1883 HNLMS Koning der Nederlanden was reported to be in Onrust Dock of 5,000 tons.

[25] No significant damage was reported, but dockmaster Duyvetter was said to have been moved to Surabaya, because his inexperience caused irregularities in the operation of the dock.

[26] In February 1884 the American ship Evie Reed of Captain Rawdon used the dock.

[28] In May she was indeed unloading, and in June she occupied the dock while Koningin Emma der Nederlanden was waiting her turn.

After the harbor of Tanjung Priok had been made ready the Dutch government had less reason to maintain a naval base at Onrust, and so it was closed.

[38] On 15 October 1891 the 3,000 tons dock left Surabaya for Tanjung Priok, and she would not return before November 1896.

The works were led by engineer De Heer, and also entailed the replacement of multiple bad metal sheets.

[49] To cover for her absence, the 3,000 tons dock served in Surabaya from 14 February 1898 - 18 March 1898, before it left for Sabang.

It was meant for the Droogdok Maatschappij Tandjong Priok, but the Dutch government changed its mind and handed it to the Naval Base at Surabaya.

[56] Nothing much was done by the dock till a contract for use was made with the Droogdok Maatschappij Soerabaja in November 1915.

De Zeven Provinciën was claimed to have docked at the naval base in Surabaya on 28–29 February 1916.

In July 1924 the Hollandsche Aanneming Mij started to poor concrete for a new 80 m long dock.

[61] In August 1925 an advertisement offered Onrust Dock of 5,000 tons on condition of breaking her up.