RHEIN-MAAS-UND-SEE SCHIFFAHRTSKONTOR GMBH.

Funnels could vary on chartered ships, although the bands were normally used. Mitchell shows the RMS panel alone, leaving its funnel ground unspecified. Josef Nüsse’s flag has royal blue, while Jorge Candeias’s FOTW version has light sky blue. A flag panel on Mistral, photographed on 3 October 2010, supports the lighter shade; a second FOTW image by Jarig Bakker follows Brown 1995.

The source describes a blue diamond with blue letters but supplies only the funnel. Rosanoski assumes a diamond frame rather than a solid diamond.

A company website photograph shows a blue funnel with a white diamond bearing RMS in the same blue. The funnel is confirmed by a starboard photograph of RMS Rotterdam on 7 October 2013.