Anchored False Creek.

Union Jack (ex Burnaby Straits) was built at the McKenzie Barge & Derrick Company in North Vancouver starting in 1937. Union Jack was launched in 1941 as a tugboat for the Union Towing Company to serve the Royal Canadian Navy during the Second World War. Union Jack was designed by Arthur Moscrop who also designed Ivanhoe and Master.

MMSI 316039275
Call sign CFA2934
The Union Jack was originally built as a tug boat to serve Canada's Navy during WWII. More info in below link....
https://www.remotewestcoastadventures.com