It ordered three ships at the Nederlandsche Stoomboot Maatschappij (Dutch Steamboat Comp.

[4] The order for the ships was part of a plan by three companies to cooperate and monopolize steam transport on the Rhine.

[2] The English steam engine by John Seaward & Co.[3] had a single low-pressure cylinder of 70 hp at 30 turns a minute.

The two paddle wheels had a diameter of 3.76 m.[5] The boat had a special engine with which it could daily put water pressure on the boilers to check whether they were still sound.

[7] On 19 April Concordia left Cologne for Mainz, and reached Bingen am Rhein in the late evening.

On 26 April 1827 Concordia left Mainz again to steam to Cologne, and people began to suspect that she would be used for service between these cities.

On 29 April she made an upstream pleasure trip of about 15 km to the vicinity of Oppenheim with a lot of local authorities.

[10] On 26 April 1827 the „Preußisch Rheinische Dampfschiffahrts-Gesellschaft“ (PRDG) had advertised that she would start the line between Cologne and Mainz according to a schedule in May.

The rising water inside the boat, and its changing color made the skipper conclude that Concordia was leaking.

[14] After the passengers and goods were transshipped, a large leak was discovered on the left side of the hull.

With the help of local authorities and workers, the leak was patched up, and at 6 AM of 13 September Concordia continued to Cologne.

The survival of the boat was attributed to its sturdy construction, and the engine providing speed and pump capacity.

While on board Concordia in 1827, the poet Friedrich von Matthisson wrote: One cannot imagine anything more elegant and comfortable than this steamboat.

It was titled Rheinreise von Mainz bis Cöln, Handbuch für Schnellreisende auf dem Rhein.

[20] On 20 February 1841 Concordia towed the barque Marie Julie from her construction yard in Zierikzee into the open sea.

On a July 1841 trip from Antwerp to Rotterdam Concordia under captain Engels, picked up a man and young child at Tholen.

[24] In March 1843 Concordia transported the body of Anton Reinhard Falck from Antwerp to Rotterdam.

In 1853, it entered a partnership with the Dampfschiffahrts-Gesellschaft für den Nieder- und Mittelrhein (DGNM).