Elephant Island was an inhospitable place, far from any shipping routes; rescue by means of chance discovery was very unlikely. Consequently, Shackleton decided to risk an open-boat journey to the 720-nautical-mile-distant South Georgia whaling stations, where he knew help was available. The strongest of the tiny lifeboats, christened after the expedition's chief sponsor, was chosen for the trip. Ship's carpenter Harry McNish made various improvements, including raising the sides, strengthening the keel, building a makeshift deck of wood and canvas, and sealing the work with oil paint and seal blood.