

The dark-blue flag has a red-white-dark-blue border, with white MPC lettering at the bottom of the central field and a white Hamburg harbour emblem above. Schneider saw it near Hamburg’s Dammtor Station in July 2010. FOTW tentatively calls it a former Steamship flag; Rosanoski considers a group flag more likely.
A white saltire divides the flag into red hoist and fly quarters and dark-blue upper and lower quarters; the red quarters are edged dark blue. The upper quarter holds the white harbour emblem, with white M at the hoist, P below and C at the fly. The emblem resembles Hamburg’s castle, its top transformed into a trident and an anchor portion added below. Schneider observed the flag at Hamburg Neumühlen on 11 May 2012. The funnel follows Rio Thomson photographed to port on 1 February 2014.