As the Arctic ice sheet shrinks, shipping will begin to move from the North Atlantic to the North Pacific across northern Norway and Russia, and across northern Canada and Alaska. Both routes meet in the Chukchi Sea, merge, and transit the Bering Strait. Oil development, commercial fishing, tourism, scientific research, and military patrols are also going to contribute traffic.
All of this will require infrastructure: ports, bases for sea-going tugs, air facilities, search and rescue bases, prepositioned oil spill response equipment, and aids to navigation.
The U.S. Coast Guard will be setting up its first Arctic Ocean base - probably at Barrow - next Spring: New Coast Guard Task in Arctic’s Warming Seas . It's also begun discussions with the Russians on comtrol of traffic through the Bering Strait (Matthew Wald and Andrew Revkin, New York Times, October 19):