Doggerland

In the North Sea, far from what remains of the coastline, a wind farm stretches for thousands of acres. The Boy, who is no longer really a boy, and the Old Man, whose age is unguessable, are charged with its maintenance.
They carry out their never-ending work, scoured by wind and salt, as the waves
roll, dragging strange shoals of flotsam through the turbine fields. Land is only a memory. So too is the Boy's father, who worked on the turbines before him, and disappeared.
The boy has been sent by the Company to take his place, but the question of where he went and why is one for which the Old Man will give no answer