J.J. SIETAS K.G. SCHIFFSWERFT GMBH & CO.
image contributed by Jan Mertens, 28 August 2007
The blue pennant bears white “J.J. Sietas” lettering; Jan Mertens tentatively expands the initials as Johann Jacob. A photographed example differs in colour from the drawing, possibly through ageing. Rosanoski regards the Fischer flag as apparently the only actual example shown and leaves the precise proportions and shade uncertain.