Fast Ice

The ice under the Nanook is older than the ocean it floats on.

Captain Ingrid Voss-Halloran has three days to certify the Polar Gateway Corridor, a shipping lane across the top of the world that will cut weeks off the trip between Asia and Europe. Her owners have a convoy of seventeen thousand containers already on the way. Her own career rides on a clean signature. And ahead of her icebreaker, in water every chart calls open, sits a pressure ridge that should not exist.

It starts as a number...