SS

Steamboat

A steamboat or steamship, sometimes called a steamer, is a ship in which the primary method of propulsion is steam power, typically driving propellers or paddlewheels...

 Calgaric was an ocean liner

Ocean liner

An ocean liner is a ship designed to transport people from one seaport to another along regular long-distance maritime routes according to a schedule. Liners may also carry cargo or mail, and may sometimes be used for other purposes .Cargo vessels running to a schedule are sometimes referred to as...

 built in 1918 by Harland and Wolff

Harland and Wolff

Harland and Wolff Heavy Industries is a Northern Irish heavy industrial company, specialising in shipbuilding and offshore construction, located in Belfast, Northern Ireland....

 in Belfast

Belfast

Belfast is the capital of and largest city in Northern Ireland. By population, it is the 14th biggest city in the United Kingdom and second biggest on the island of Ireland . It is the seat of the devolved government and legislative Northern Ireland Assembly...

 for the Pacific Steam Navigation Company

Pacific Steam Navigation Company

The Pacific Steam Navigation Company was a commercial shipping company that operated in the Pacific coast of South America, and was the first to use steam ships for commercial traffic in the Pacific Ocean.-History:...

 as the Orca. In 1927, she was sold to the White Star Line

White Star Line

The Oceanic Steam Navigation Company or White Star Line of Boston Packets, more commonly known as the White Star Line, was a prominent British shipping company, today most famous for its ill-fated vessel, the RMS Titanic, and the World War I loss of Titanics sister ship Britannic...

 and renamed Calgaric. She remained in service until 1934.

Official number and code letters

Official numbers were a forerunner to IMO ship identification number

IMO ship identification number

The IMO ship identification number is made of the three letters "IMO" followed by the seven-digit number assigned to all ships by IHS Fairplay when constructed. This is a unique seven digit number that is assigned to propelled, sea-going merchant ships of 100 GT and above...

s.

Calgaric had the UK official number 140579 and used the code letters

Code letters

Code letters were a method of identifying ships before the introduction of modern navigation aids. Later, with the introduction of radio, code letters were also used as radio callsigns.-History:...

JTLW.

Sources

|url=http://www.norwayheritage.com/p_ship.asp?sh=calga |title=S/S Calgaric, White Star Line |publisher=Norway-Heritage }} |url=http://www.plimsollshipdata.org/ship.php?ship_id=48950&name=Calgaric |title=Details of the ship |publisher=Plimsoll Ship Data }}

• • "LLOYD'S REGISTER, NAVIRES A VAPEUR ET A MOTEURS":