ONSTAD SHIPPING A/S.

Merchant Ships 1942 appears to show a white O on the funnel panel. Marine News places the flag’s panel nearer the hoist; a Kungsoil cap badge supports that position but also outlines the hexagon in blue. US Navy uses the Kungsoil version with equal bands and a blue panel outline. Jordan describes a yellow funnel with a red and gold shield on a blue band.

Rosanoski considers Stewart’s funnel probably erroneous, with its panel intended to resemble the flag’s.

Mitchell’s emblem probably represents a red O edged blue with a blue centre, although it can look like a blue-edged red panel bearing a blue I.

In 1967 Onstad adopted a flag divided horizontally red over grey.