The Establishment of Terases Empire
The defensive room over the top of this cruiser controlled twenty cannons with different types. They were arranged generally to three groups, each was connected to one handle.
If James was doing this manually, he wouldn't be able to hit anything, however after activating the supporting systems here, all the hard work was literally done by the system.
All he needed to do was to try and move the handles towards the general location of the cruiser he wanted to shoot down then press the trigger. The systems would do the rest starting from calculating the shot trajectory ending by firing multiple times to make sure the shields were down and the cruiser was destroyed.
However even with all this help, James knew his main job wasn't to shoot down cruisers, but to try and support the shield by aiming towards the incoming shots.