The first vessel of this research and development program was the 1979-built Canmar Kigoriak which represented a radical departure from conventional icebreaker designs with, among other features, a single-shaft mechanical propulsion system instead of a more commonly-used diesel-electric powertrain.
Her typical annual operational profile would begin in May with a warm-up that would gradually bring the vessel systems online after five months of cold lay-up.
After commencing break-out, the Canmar icebreakers would first carry out one or more resupply missions to the drilling islands where exploratory activities have continued through the winter.
By the end of November, the drillships would be escorted back for winter lay-up and Robert LeMeur would carry out final supply runs to the drilling islands.
In some years, Robert LeMeur was involved in research and development projects during the winter months or drydocked on Canmar's floating dock for inspection and repairs.
[2] In 1982–1989, the Canmar drillships drilled only 10 wells for Dome Petroleum and other oil companies in the Canadian part of the Beaufort Sea.
[note 1] She became part of a large fleet of vessels distinguished only by number and was used to support Chinese offshore platforms in the seasonally frozen Bohai Sea.
At the time, the vessel originally built for the Canadian Arctic had spent more than half of her 34-year-long career in the Bohai Sea under the Chinese flag.
The decision to scrap the old icebreaker was likely related to the large fleet renewal program, which included ice-strengthened tonnage, carried out by China Oilfield Services.
In addition, since it was decided not to dredge the Tuktoyaktuk harbour to a greater depth, Robert LeMeur was also designed to carry as cargo as possible at a lower draught of 4.1 metres (13 ft).
[14] Robert LeMeur had a spoon-shaped icebreaking bow designed to minimize ice resistance, a further development of Canmar Kigoriak's hull form.
[2] Robert LeMeur had a diesel-mechanical propulsion system with two diesel engines driving 3-metre (9.8 ft) controllable pitch propellers in nozzles.
For maneuvering, Robert Lemeur had twin rudders with a maximum turning angle of 45 degrees and two transverse bow thrusters.