I'm reminded of the story in which one of the Wright brothers was asked if an airplane would ever b able to cross the Atlantic Ocean. He reportedly replied, "No, because no airplane engine will operate for 14 days."
I was an Army Brat in those years.
We sailed from Seattle to Yokohama and back on MSTS ships.
Troops on the bow and fantail. Military dependents in tiny staterooms on five decks in the midsection.