It is another different ship for Hapag-Lloyd, and unlike most container ships these days, it was built in Germany. Builder Howaldswerke-Deutsche Werft's Gaarden yard turned the ship out in 2010. It has a container capacity of 3,476 TEU (including 500 reefer plugs) and at 36,087 grt, 42,483 dwt, is much smaller than the usual ships on the Hapag-Loyd service. The ship normally operates on the North Europe/Southern US and Gulf of Mexico "GMX" service, so perhaps it is diverting this time to carry a backlog due to a cancellation or delay of another ship..
The beautiful weather did not last, with showers, rain and fog returning by noon time. Maasdam's passengers proably didn't spend much time on deck when the ship sailed later in the afternoon.