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Sources vary in the relative widths of the flag’s cross arms, from equal widths to a very narrow green arm. Rosanoski places the actual proportion between these extremes, at about 2:3 green to red. B107’s funnel was adopted after the First World War. B108 is dated either to 1937 or about 1945; references to Leinster and Munster in 1938 support the earlier date. A photograph of Leinster confirms a narrow funnel band, rather than Loughran’s wider version.

An earlier FOTW rendering, B884, had a pinkish-red cross; a later rendering used red. The B108 illustration was subsequently replaced by Jarig Bakker’s version from the National Maritime Museum flag, dated about 1955 and measuring 1092.2 × 1752.6 mm.

The Gaelic “e” emblem was adopted in January 1967, with Innisfallen the first vessel to receive the new funnel. A blue flag with a white Gaelic “e” was designed afterwards but never worn as a house flag. Leinster briefly used it as a stem jack early in 1967.

A slightly different Gaelic “e” was adopted on the funnel in July 1967 and retained by cargo vessels after the passenger ships changed again in 1975. Loughran shows it overlapping the black top; Mayes does not describe the emblem.

Brown 1995 gives three progressively darker blue funnel bands. Mitchell starts with grey, followed by light and dark blue; a photograph captioned “Muntster”, dated 2 June 1990, seems to show a greyish-blue inner band. The livery was replaced by that of Irish Continental.