Exhaust steam from this pair of reciprocating engines drove a low-pressure turbine, which powered her middle screw.

[4] Orca was planned as an ocean liner for Pacific Steam's passenger service between Britain and the west coast of South America.

To ascend or descend between decks, passengers had a choice of electric elevators, or a staircase lit by a domed skylight.

[7] She finally started her passenger maiden voyage, on 3 January 1923, sailing from Southampton via Hamburg to New York.

[3] White Star ran services to Canada, so Orca was renamed Calgaric after the city of Calgary in Alberta.

[2] The Scout Association chartered Calgaric to take scoutmasters and Guide mistresses on a Baltic cruise in August 1933.

[12] Her itinerary was Rotterdam, the Kiel Canal, Gdynia, Klaipėda, Riga, Tallinn, Helsinki, Stockholm, Oslo, the Pentland Firth and Oban.

[13] In 1934 Calgaric was assigned the new four-letter wireless telegraph call sign GLTR to replace her former code letters.

She was sold for scrap, and on Christmas Day 1934 she arrived at Rosyth in Scotland for Metal Industries, Limited to break her up.