GEBRÜDER ELFRING.
image by Klaus-Michael Schneider, 8–9 April 2009
The yellow flag has a central white disc edged black, containing red 11. Schneider explains it as a canting design because Elf means eleven in German. Rosanoski recommends a larger emblem when following Flaggen & Schornsteine and identifies Gerhard Elfring as the vessel for which the livery is given.