Endeavour had a displacement of 15600NaN0 at full load with a length overall of 236feet, a beam of 38feet and a draught of 13feet. Endeavours hull was stiffened for work in areas with ice.
The ship was propelled by two shafts driven by a diesel-electric engine creating 29600NaN0. The machinery space was insulated to reduce noise. This gave the vessel a maximum speed of 16kn and a range of 10000nmi at 12kn. Endeavour could turn 2 times its length. The ship had a 48x helicopter deck. The ship was fitted with two 9-ton Austin-Weston telescopic cranes. Two oceanographical winches, each holding 5000fathom of wire, two bathythermograph winches and one deep-sea coring winch were also fitted. The vessel had a complement of 50, which included 10 officers, 13 scientists and two aircrew.
Endeavour was ordered from Yarrows Ltd. and constructed at their shipyard in Esquimalt, British Columbia and given the yard number 250. Endeavours keel was laid down on 4 September 1963 and the ship was launched on 4 September 1964. The vessel was commissioned into the Royal Canadian Navy on 9 March 1965 and given the hull number AGOR 171. Endeavour was deployed on the West Coast of Canada researching anti-submarine warfare from the time the ship entered service until 1999. The vessel replaced the old . In 1999, Endeavour was transferred to the East Coast to replace temporarily, while Quest was undergoing modernisation. In 2000, Endeavour was discarded.