The shipwrecked fishing vessel that has sat on the rocks north of Dillon Beach since March 6 will be refloated and demolished later this summer, a coalition of agencies announced last week. The plan, which utilizes funding from the Environmental Protection Agency, consists of strategically filling interior spaces in the 90-foot American Challenger with expanding foam to create buoyancy, then pulling the vessel by tugboat. Crews have already patched the steel hull and installed cameras…