The MACIVER MOTOR LINER “ARABY”

Note the destination was noted as River Plate and the writing seems to indicate the ship was built 1923 (trade between UK and Argentina was substantial at this point, Uruguay also provided much for the UK market), T.G. 4,900 (gross tonnage?) belonged to MacIver Line based out of 31 James Street, Liverpool and that it joined Royal Mail Lines 1932.

Further merchant ships with a link to MacIver are ships in the Clan Line. See evidence of an issue with one in a piece of information by E Dowds on the MV Clan MacIver incident in 1958.