ÅNGBÅTS A/B FERM.

Lloyd Reedereiflaggen shows the F reading normally on the reverse, suggesting a double-sided flag. Some 1930s sources list the livery under Axel Broström & Son. The 1942 and 1944 works show the F177 and F178 funnels as alternatives, while Ships & The Sea 1938 says the bands between the red on F178 should be blue, corresponding to F177. Jordan implies blue bands without naming them.

Ships & The Sea 1936 gives this as an alternative. Merchant Ships 1949 also assigns it to Angfartygs A/B Tirfing and places both companies under T.E.J. Broström Son, although Lloyds supports that management only for Ferm.

No flag accompanies this funnel in the source; Rosanoski assumes the company flag applies.