On 18 November 1678, after just over a month of preparations at Fort Frontenac, La Salle dispatched Captain La Motte and Father Louis Hennepin together with 15 men and supplies in a vessel of 10 tons. Their mission was to begin selecting a site for the construction of "Le Griffon" and to erect necessary structures for shelter, storage, and defense. Because the wind was strong from the north, they sailed close to the north shore of the lake, putting in for the nights in various bays along the way. Somewhere near present-day Toronto they were frozen in and had to chop their way out of the ice. From there they struck out across the lake toward the mouth of the Niagara River. They arrived late on 5 December, but the weather was rough and they did not want to run the surf and outflow of the river at night, so they stayed a few miles off shore. On 6 December, they landed safely on the east bank of the river at about where Lewiston, New York is today. They attempted to sail further upstream, but the current was too strong. Ice flowing down the river threatened to damage their little brigantine and after a cable was broken, they hauled the vessel ashore and into a small ravine for protection.