of the Ottawa-based Marine Dynamics and Ship Laboratory, conducts research relating to design of ships and marine offshore structures, with special interests in ice-capable vessels and structures for operation under Arctic conditions. In St John's the Institute offers the world's largest ice tank, 90 m long, 12 m wide and 3 m deep, capable of developing ice 15 cm thick, in a refrigerated building where working temperatures can be maintained down to -25°C. There are also large seakeeping and

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... ng tanks with wave-making capacity for model testing, a cavitation tunnel for studying the propeller design, and system support and model-making facilities. In Ottawa the Institute continues to operate a towing tank and manoeuvering basin. Research programmes are developed in cooperation with other government agencies and with industry. (Source: National Research Council Canada brochure.)