Below the tank, I now noticed a line of three circular openings, like the forward discharge ports of an IP dreadnought. The forklift rose up a little on hydraulic pistons and loaded the tube it was carrying smoothly into the centre port. The tube fitted snugly, the visible end rotating through about ninety degrees before a steel baffle slammed down over it. Its task completed, the forklift sank back down on its hydraulics and its engines died.