At 1355 the Riverhead fire department was dispatched for a boat fire in a building at 4195 Middle country road, Calverton. 1st. arriving units 6-2-3 and 6-2-90 found a fully involved boat on fire. The boat was pulled out of the building before our arrival. The crew on 6-2-3 quickly put water on the fire with the assistance from the crew off 6-2-1. One civilian was transported to PBMC for smoke inhalation by Riverhead volunteer ambulance. The fire in under investigation by the Riverhead fire Marshal. All units were back in service by 1455.