I te tau 1974 ka riro i te Kamupene Matson Navigation te mahi a Seatrain ki te Tai Hauauru-Hawaii, ka riihi i te "Transoneida", "Transchamplain" me te "Transontario" hei whakahaere i te waka. I te tau 1975, ko Navieras de Puerto Rico, e mohiotia ana ko te Mana Whakahaere Moana o Puerto Rico, i whakahaere i nga mahi a Seatrain ki roto i Puerto Rico, me nga kaipuke "Transhawaii", "Transidaho" me "Transoregon", i riro ko Navieras "Aguadilla", "Carolina", me "Mayaguez" (he maha nga wa e pohehe ana ki te kaipuke Ratonga Moana-whenua o te ingoa kotahi i uru ki te kaupapa o Mayaguez
Ko te tikanga o te ture. Ko enei whakarereketanga e rua i waiho ai a Seatrain ki te aro ki ana mahi whakawhiti-a-ao me te whakawhiti-Pacific me te whakakapi i ona kaipuke kaipuke taketake, ko te nuinga o nga kaipuke kua rehitatia, me nga "Seatrain Independence", "Seatrain Bennington", "Seatrain Chesapeake", "Seatrain Oriskany", "Seatrain Saratoga", me te "Seatrain Yorktown".