SS Caledonia was a British ocean liner that was built in Scotland in 1905 and converted into a troop ship in 1914.

D. and W. Henderson and Company in Glasgow built Caledonia as yard number 438 for the Anchor Line.

In March 1915 she left Saint John, New Brunswick carrying members of the 26th Battalion, Canadian Expeditionary Force.

[7] On the night of 31 July 1915 the 38th Battalion (Ottawa), CEF embarked on the Caledonia at Montreal.

The transport proceeded down the Gulf of St. Lawrence, but was ordered back to Quebec City due to the suspected presence of submarines off the Atlantic coast.

They sailed on 8 August, landing in the Imperial fortress colony of Bermuda on 13 August to relieve the Royal Canadian Regiment, which had been posted to the Bermuda Garrison in place of the 2nd Battalion of the Lincolnshire Regiment in 1914.