Our boat was struck a while ago, if your friend has not have him contact insurance ASAP. They will give him a process to follow. Do not start the repair process on your own insurance won't cover unless you follow their process and every company is different. Ours blew autopilot, B&G (partial), regulators, radar, GPSs, SSB tuner, chart plotter and some other stuff. In my case the insurance company sent an adjuster to survey the boat and that started the process. In the end the settlement was fair.