Kammala wannan jumlar: A cikin 1974 Matson Navigation Company ya karɓi sabis na Seatrain na Yammacin Yammacin Hawaii, ya ba da "Transoneida", "Transchamplain" da "Transontario" don kula da zirga-zirga. A cikin 1975 Navieras de Puerto Rico, wanda aka fi sani da Puerto Rico Maritime Shipping Authority, ya karɓi ayyukan Seatrain zuwa da cikin Puerto Rico, tare da jiragen ruwa "Transhawaii", "Transidaho" da "Transoregon", wanda ya zama Navieras "Aguadilla", "Carolina", da "Mayaguez" (wanda aka rikita shi da jirgin ruwa na Sea-Land Service na wannan sunan da ke cikin jirgin ruwa na Puerto Rico).
Abinda ya faru a Mayaguez). Waɗannan canje-canje guda biyu sun bar Seatrain don mai da hankali kan ayyukansa na transatlantic da transpacific na duniya da kuma maye gurbin jiragen ruwa na asali da aka canza, galibi tare da rundunar jiragen ruwa da aka yi hayar, da kuma sabbin gine-ginen "Seatrain Independence", "Seatrain Bennington", "Seatrain Chesapeake", "Seatrain Oriskany", "Seatrain Saratoga", da "Seatrain Yorktown".