Construction of the Harry DeWolf class OPV William Hall in progress


According to information published by Irving Shipbuilding on August 8, 2022, the bow Mega Block has been successfully rolled onto land level to form the fourth Harry DeWolf-class offshore patrol vessel HMCS William Hall.
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Russian Vyborg Shipyard laid the Purga ice class coastguard ship of project 23550 925 001 Future Canadian Harry DeWolf class OPV William Hall (Picture source: Irving Shipbuilding)


The Harry DeWolf-class offshore patrol vessels are designed for use in the Arctic regions of Canada for patrol and support within Canada's exclusive economic zone.

The vessel is 103.6 m (339 ft 11 in) long overall with a beam of 19.0 m (62 ft 4 in). The ship will have a displacement of 6,615 metric tons (6,511 long tons). The ship has an enclosed foredeck that protects machinery and work spaces from Arctic climates.

The vessel will be powered by a diesel-electric system composed of four 3.6-megawatt (4,800 hp) generators and two diesel engines rated at 4.5 megawatts (6,000 hp) driving two shafts.

William Hall will be capable of 17 knots (31 km/h; 20 mph) in open water and 3 knots (5.6 km/h; 3.5 mph) while icebreaking in new year ice of 1-metre (3 ft 3 in) thickness.

The ship will also be equipped with a bow thruster to aid during maneuvers and docking procedures without requiring tugboat assistance. The ship will have a range of 6,800 nautical miles (12,600 km; 7,800 mi) and an endurance of 120 days with 65 personnel. William Hall will be equipped with fin stabilizers to decrease roll in open water but can be retracted during icebreaking.

The ship will also have two 8.5-meter (27 ft 11 in) multi-role rescue boats capable of over 35 knots (65 km/h; 40 mph). The ship will be armed with one BAE Mk 38 25 mm (0.98 in) gun and two M2 Browning machine guns.

The patrol ship has an onboard hangar and flight deck for helicopters up to the size of a Sikorsky CH-148 Cyclone. William Hall will have a complement of 65 and accommodation for 85 or 87.