The main power board (next to battery), electronic speed controllers (ESCs) and the ESC output fuses are fitted to a removable base in the middle of the boat. The r/c receiver is loose at the top of the picture, the grey wire nearer the bottom goes to the bow thruster.

After getting the systems wired in I spent several days trying to sort some interference and other funny behaviour of the controls. Though mostly sorted this is ongoing and I'm waiting on some extra parts before trying to finalise it.