Imperial Oil Shipping used a similar flag with white I.O.S. and blue CO. LTD lettering, the initial letters of the latter group taller. A black-and-white photograph of Imperial confirms the funnel.
Imperial Oil Shipping is described as a 1937 change of name from Imperial Oil and later as reabsorbed into its Marine Division. The FOTW account places that incorporation in the late 1950s, while Lloyds 1956–57 already combines the fleet. Standard Oil of New Jersey is recorded as owner, with Tropical Oil an associate. H.J. Rahlves appears as manager. Earlier names ending in olite gave way by 1953 to Imperial followed by a Canadian place name.
Canada, Toronto; Halifax also recorded.
Keep the explicit scope label independent; no alias or company identity is inferred.