Glory’s pilot is concentrating intensely and ignores them, which Randy takes to be a sign of professionalism. The bridge has many counters fashioned from doors or thick plywood, and all of the available space is covered with electronic gear: a fax, a smaller machine that spews out weather bulletins, three computers, a satellite phone, a few GSM phones socketed into their chargers, depth-sounding gear. Amy leads him over to a machine with a big screen that is showing what looks like a black-and-white photo of rugged terrain. "Sidescan sonar," she explains, "one of our best tools for this kind of work. Shows us what’s on the bottom." She checks one of the computer screens for their current coordinates and then runs a quick calculation in her head. "Ernesto, change course five degrees to starboard please."