IMS.
image by Phil Nelson, None
Rosanoski assumes that S261’s funnel and flag used similar yellow. Brown 1958 records the change from that flag to S263.
Skipet shows the funnel both with and without a black top. Nüsse’s table-flag photographs differ in apparent frame colour, dark blue on the old site and black on the new, but the company website confirms blue.
The flag association is qualified: Rosanoski expects a filled white diamond with a border, matching the funnel, rather than merely a diamond frame on the field. A vessel-flown flag is noted as S262.
SP Protector of Skaugen Petrotrans was photographed flying a flag whose S differs from the S260 table flag.