La Salle's prime focus in 1678 was building "Le Griffon". Arriving at Fort Frontenac in late September, he had neither the time for nor the interest in building a vessel at Fort Frontenac to transport building materials, some of which he had recently obtained in France, to a site above Niagara Falls where he could build his new ship. Beckwith's conclusion was that he chose one of his existing vessels, one of about ten tons burden, for sending the first group of men to Niagara. Some of La Salle's associates called this vessel a brigantine; others called it a bark. The accounts agree that this little vessel played a part in the building of "Le Griffon".