The latter was a port for the iceboat service. In 1879 the archetypical Hudson River iceboat began to emerge. The International DN is a class of iceboat. The Ghost Lake Iceboat Club is located at Ghost Lake. Different classes of iceboat can achieve speeds, as follow. Hull speed is not a limiting factor for an iceboat nor for high-performance multihulls. V is generated by the combination of iceboat velocity (V) and true wind velocity (V). One was relocated to Corktown Common and another to Iceboat Terrace, west of Spadina Avenue.