Documentary images — company attribution uncertain

Mitchell attributes W401 to an Osaka company and Hoyo Maru, a vessel of 37,579 tons built in 1977. Miramar records that name in 1977–1984, but Rosanoski could not find it in Lloyd’s. Its size is inconsistent with the small vessels recorded for this concern, and the date also conflicts with the alleged 1968 merger. The funnel may therefore belong to another company of the same name.

No corporate continuity established.