ReKenline's sailing time and day, the mail service was 'speeded up' in the late 1960s, changing the sailing day to Friday from Thursday. The speed on the North / South run was increased by 2 or 3 knots which took a day or more off that part of the run, time in port was reduced so they could run the service with one ship less than before. The three passenger ships of the Capetown Castle class were taken off and the two fast (25 knot) motor cargo ships, Sothampton Castle and Goodhope Castle, were put on the run. The total round trip was reduced by seven days. sailing was by the clock because of the mail contract. Even if no cargo and all passengers on board they could not sail early without Post Office approval.