



Olau Kent postcards supply the flag and funnel colours. Olau Gorm in July 1964 confirms the livery except for the absence of a black top and a lighter, possibly weathered funnel shade.
Rosanoski considers Brown 1982’s Sheerness–Vlissingen funnel incorrect when compared with photographs, which support O31.
After the final sale to TT-Line in 1980, its logo was adopted in Olau red and blue; the red-white-blue colours were described as representing Britain and the Netherlands. Photographs show bands reaching the funnel’s after edge on both sides. With sloping sides and the same angles, the port blue band is longer, while the starboard bands are equal in length; individual vessels show varying lengths. The colours apparently gave way to P&O’s in 1994.