Luxury cruise conquers fabled route The first large-scale passenger cruise ship is to sail through the Northwest Passage, the Arctic sea route made navigable by steadily shrinking ice cover. The route has never before been attempted by a ship of this size CRYSTAL SERENITY Length 250m Beam 32m Draught 8m Decks 13 Crew 655 Passengers 1,000 Ticket $22,000 SAFETY MEASURES: Ship fitted with ice detection radar, special search lights, thermal imaging and navigation system that displays near real time satellite ice imagery RRS Ernest Shackleton: British research vessel will escort Serenity to provide ice-breaking assistance. Ship carries two helicopters for real-time ice reconnaissance, emergency support and sightseeing flights Ice extent Sep 1985 North Pole Ice extent Sep 2015 Nome Dutch Harbor Kodiak PACIFIC OCEAN START, Aug 16: Anchorage/ Seward, Alaska (U.S.) Arctic Circle Ulukhaktok (Canada) Cambridge Bay CANADA U.S. FINISH, Sep 17: New York City Greenland (DENMARK) Ilulissat (Greenland) Sisimiut Nuuk ATLANTIC OCEAN Bar Harbor (U.S.) Pond Inlet Boston Newport Sources: Crystal Cruises, NSIDC Pictures: Getty Images, NERC