YAG 300 (Yard Auxiliary, General) vessels were a series of ten wooden boats built between 1954 and 1955 that throughout their service acted as yard ferries (Blue Boats), training platforms and test beds for route survey equipment with the Royal Canadian Navy (RCN).

[1] Unofficially known as Canadian Forces Auxiliary Vessels (CFAV), the 75-foot boats primarily served as at-sea training platforms for junior naval officers, boatswains, reserve personnel and Sea Cadets at Canadian Forces Base (CFB) Esquimalt until they were taken out of service in 2007.

"[2] The boats were 75′ long overall, 18′6″ wide, had a draft of 4′6″, measured 70 tonnes, and were all powered by twin 6-71 Detroit Diesel engines.

Above the wheelhouse was an open bridge, fitted with a chart table and a gyrocompass repeater.

Before being put on the auction block, the 57-year old vessels were stripped of all military equipment and then environmentally assessed for sale.