REEDEREI BERND SIBUM GMBH & CO.K.G.
image by Ivan Sache, 7 September 2008
The blue flag bears a yellow diamond nearly reaching its edges, charged with a blue S. On Grete Sibum’s funnel the flag is mirrored so that the pole faces forward on both sides, while the S reads normally, as though double-sided. Photographs also show the flag flying on Anna-Marie Sibum; the FOTW account names Anna-Maria Sibum, Rita Sibum and Grete Sibum.