UNTERWESSER-REEDEREI GMBH.

The flag is divided saltirewise in blue and red with white “URAG”. Victor Lomantsov reported it painted on Weser from a photograph in Guten Tag, 1989. The FOTW image is by Jorge Candeias; the company website and Josef Nüsse table flags provide further evidence. Sources differ in letter shapes and blue shade. Rosanoski notes that the original flag had the same format with “SGUW” instead of “URAG”, and that website colour shades differ from the earlier portrayal.

U139 is the early flag documented by Lloyd’s 1912. Klaus-Michael Schneider’s FOTW image of 16 September 2008 specifies “G” at the hoist, “U” at the fly and “W” below; Rosanoski’s historical account gives the full original lettering as “SGUW”.

U41 and U5 preserve additional documented funnel-and-flag versions. U41 is sourced to Brown 1934 and Lloyd Reedereiflaggen 1933; U5 is represented in numerous 1928–1963 publications. The text does not establish a separate chronology for their design differences.