Documented shared associations — Sanko Kisen funnel / Sanko Asia Line flag composite
image by Jarig Bakker, 19 December 2005
Brown 1982 and 1995 show a flag with four white and three red horizontal bands, the two inner white bands narrower, and an overall red target merging with the red bands. Rosanoski and Alan Watt attribute that flag to Sanko Asia Line, renamed Sakura Shipping in 1997, rather than Sanko Kisen. The band thicknesses and continued use after the name change are uncertain.