Corporal Teather C.V. is based in Dartmouth, Nova Scotia, tasked with fisheries patrol and enforcement.

Corporal Teather C.V. has a fuel capacity of 34 m3 (7,500 imp gal) giving the vessel a range of 2,000 nautical miles (3,700 km; 2,300 mi) at 14 knots (26 km/h; 16 mph) and an endurance of 14 days.

[3][4] Launched in 2013, the ship was completed in February of that year and entered service with the Canadian Coast Guard.

[2][3] The ship was named for Robert Gordon Teather, a Royal Canadian Mounted Police corporal who was awarded the Cross of Valour for his actions during a water rescue in 1981.

[2] In February 2017, Corporal Teather C.V. was among the Canadian Coast Guard ships named in a report claiming poisoned water aboard some vessels.