STANDARD-VACUUM OIL CO.

The flag follows a circle-and-bar pattern with a superimposed name. The Stanvac version reverses earlier Standard colours to red lettering on a blue design and adds a V to the circle. Brown 1943 instead has red horizontal lines, changed to blue in 1951. Rosanoski disputes Loughran’s sequence and cautions that circular rings, rather than the elongated FOTW renderings, are shown in the sources.

The later form uses STANVAC without the V. The Dutch chart describes white with a blue disc interrupted by a white horizontal band, narrow blue stripes above and below, and red STANVAC. Sources assign this to Standard-Vacuum, Oriental Trade & Transport and the Dutch Tankvaart concern; Mitchell also gives its funnel to A-C Tankers. Inter-war and 1950s chronology differs between the sources and Rosanoski’s interpretation.