Admiral Oriental Line formed by H. F. Alexander was acquired in 1922 and renamed the American Mail Line[1] The American Mail Line ran Trans-Pacific Steamship Routes between the main ports of: Seattle, Victoria, Yokohama, Kobe, Shanghai, Hong Kong, Manila, and Honolulu.
[3] Regular Passenger and mail service ships in 1923 and 1936, from the Admiral Oriental Line: Regular service ports of call in 1923 and 1936: Seattle, Victoria, Yokohama, Kobe, Shanghai, Hong Kong, Manila.
Regular Passenger service ships in started in 1948: (service years) Regular Passenger service ports of call in 1957 for the above: Portland, Vancouver, Seattle, Yokohama, Kobe, Manila, Cebu, Iloilo, Hong Kong, Kobe, Nagoya, Yokohama, Pacific Northwest ports.
[7] The SS Alhambra Victory and others were run by its American Mail Line crew and the US Navy supplied United States Navy Armed Guards to man the deck guns and radio.
The most common armament mounted on these merchant ships were the MK II 20mm Oerlikon autocannon and the 3"/50, 4"/50, and 5"/38 deck guns.