Sea trials After being completed in June 1915,
Jan Pieterszoon Coen became the new flagship of the
Stoomvaart Maatschappij Nederland, and was also the largest ship ever to be built in the
Netherlands at the time. She completed her sea trials in IJmuiden in June 1915 with several passengers aboard, including the company's president J.B.A Jonckheer, four ministers with their spouses, the
Mayor of Amsterdam with his spouse and two law enforcers. There were also a high number of officials, important business relation officials and the supervisory boards and the boards of shipyard and shipping company of the SMN. The ship's Master at the time was Captain H.G.J Uylkens who led the ship to open seas together with the tugboat
Cycloop van Zurmülen. The ship sailed South past
Zandvoort,
Katwijk,
Noordwijk and
Scheveningen. During lunch however, a submarine was spotted by the guests and crew. Everyone became worried at first, but it was soon clear that it was a Dutch submarine that was given orders to guide
Jan Pieterszoon Coen back to IJmuiden. The ship completed her sea trials and arrived back in IJmuiden without incident.
Active service On 11 September 1915 at 3pm,
Jan Pieterszoon Coen left Amsterdam, Netherlands for her maiden voyage to
Batavia, Dutch East Indies. She sailed through the
Mediterranean Sea and the
Suez Canal to reach her destination.
Jan Pieterszoon Coen left Amsterdam for Batavia again on 1 Januari 1916, but this time she would sail around
Cape of Good Hope and
Cape Town to reach Batavia. She arrived on 17 February 1916 before returning to the Netherlands, where she arrived on 6 May. After the war, the ship would continue to sail the Amsterdam – Batavia route. ==Later service and end==