sentences:  A class attributed to a vessel under the "Canada Shipping Act" regime, which indicates that the vessel met the requirements of the applicable standards of "TP 12260 Equivalent Standards for the Construction of Arctic Class Ships", published by the Department of Transport, on December 1, 1995.This new system exists for determining how the most highly ice-strengthened vessels are classed by Transport Canada, Marine Safety.Four Canadian Arctic Classes (CAC) have now replaced the previous Arctic 1 - Arctic 10 Classes.