But back to the here-and-now: she's sitting on the deck of an elderly ocean liner on her way from somewhere to nowhere, and she's annoyed because Bob is getting drunk with the F-deck boys again and eating into their precious grubstake. It's too dark to read the ship's daily news sheet (mimeographed blurry headlines from a world already fading into the ship's wake), it'll be at least two weeks before their next landfall (a refueling depot somewhere in what the National Oceanic and Atmospheric Administration surveyors — in a fit of uncharacteristic wit — named the Nether Ocean), and she's half out of her skull with boredom.

When they signed up for the Emigration Board tickets Bob had joked: "A six month cruise? After a vacation like that we'll be happy to get back to work!" — but somehow the sheer immensity of it all didn't sink in until the fourth week out of sight of land. In those four weeks they'd crawled an expanse of ocean wider than the Pacific, pausing to refuel twice from huge rust-colored barges: and still they were only a sixth of the way to Continent F-204, New Iowa, immersed like the ultimate non-sequitur in the ocean that replaced the world's horizons on October 2, 1962. Two weeks later they passed The Radiators. The Radiators thrust from the oceanic depths to the stratosphere, Everest-high black fins finger-combing the watery currents. Beyond them the tropical heat of the Pacific gave way to the sub-arctic chill of the Nether Ocean. Sailing between them, the ship was reduced to the proportions of a cockroach crawling along a canyon between skyscrapers. Maddy had taken one look at these guardians of the interplanetary ocean, shuddered, and retreated into their cramped room for the two days it took to sail out from between the slabs.