Yokogawa Gyro Compass Cmz 700 User Manual < 720p · 480p >

Undefined. Saito had never seen that word in a manual. Not "error." Not "failure." Undefined.

He closed the manual. For the first time in forty years at sea, Haruki Saito turned off the gyrocompass and steered by the stars. The Mirai Maru continued through the trench. And somewhere below, the Earth turned in a way that Yokogawa had not anticipated.

"No," Saito said, not looking up from the manual. "It points to true north. The axis of the Earth. The spin of the planet itself. Magnets are for children's toys." yokogawa gyro compass cmz 700 user manual

Saito didn't answer. He opened the manual to the last page. Not a specification, not a schematic. A single line in small italics:

It was the most poetic thing Yokogawa had ever written. It read, in dry technical prose: Undefined

Tanaka nodded, unimpressed. "So, like a GPS."

He read further. Chapter 6: A list of things that could confuse the laser ring: rapid acceleration, magnetic storms, nearby large masses of iron… and undersea geological anomalies . He closed the manual

Saito looked at the chart. The Mirai Maru was crossing the Kuril Trench, where the Pacific Plate grinds beneath the Okhotsk Plate. The seabed was a graveyard of basalt and serpentinite—dense, magnetic, heavy. The manual did not have a page for "subduction zone metaphysics." But it had an appendix:

The replacement was a Yokogawa CMZ 700. It arrived in a crate the color of a stormy sea, its interior packed with desiccant bags and the sharp smell of new electronics. The manual was a brick—three hundred pages of A5 paper, spiral-bound, with a cover as blue as a winter sky. it read in crisp sans-serif. Below: "OPERATION, MAINTENANCE, AND ALIGNMENT."