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The Louis
S. St-Laurent in the ice. Photo © Chris Linder, WHOI |
Cruise - The Ship
Description
At 392.5 feet in length, 80 feet in beam, and over 15,000 tons
deadweight, the CCGS Louis S. St-Laurent is the queen
of the Canadian ice breaking fleet. She is homeported in Dartmouth,
Nova Scotia.
Mission
For over thirty years, Louis S. St-Laurent has successfully served as an arctic research platform for the international scientific community. In addition to her scientific duties, Louis S. St-Laurent has also provided escort and resupply services to isolated settlements and commercial operations in the arctic.
Crew
A typical crew complement is 13 officers and 33 crewmen. The
crew is assigned to different departments, such as the operations
department and the engineering department. The departments work
together as a team to make sure the ship completes its missions
efficiently and safely.
Icebreaking capabilities
Although Louis S. St-Laurent is capable of breaking
very thick ice, rule number one in ice breaking is, “if possible,
avoid the ice.” This is simply because it takes longer, consumes
more fuel, and produces more wear and tear on the ship when
battering through the ice. The most efficient way to break through
ice is to find the weakest points in the ice, such as existing
cracks or open areas called “leads.” When there are none, the
ship will look for “first year ice”, which is often flat and
2-6 feet thick. As sea ice gets older it becomes considerably
stronger, and changes color to a distinctive deep blue.
Construction
Louis S. St-Laurent was built in 1967 with a steam turbine propulsion plant. In 1989 she underwent a midlife refit, converting to a diesel electric system. Five huge diesel engines provide power for three shafts and propellers. The engines can produce 27,000 horsepower of power for breaking through the thick arctic ice.
Science
The ship has 11 laboratory spaces and berthing space for up
to 53 scientists. The oceanographic winches and lab spaces give
scientists the flexibility to conduct a wide range of research
activities.
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