Around 1900hrs Station 11 was alerted from a RV fire with a possible boat also involved. Engine 112 went responding 6w1 Brush 11 2w0 and Chief 11 were added to call. Engine 112 arrived with a RV 100% involved the crew quickly advanced the 400' attack line and knocked the bulk of the fire Brush 11 pulled both Booster Lines to finish the job. Qnt 30 assisted with overhaul Chief 11 had command.