Islesboro - The M/V Captain Richard G. Spear will be replacing the M/V Margaret Chase Smith on Islesboro this Wednesday at 1120 am. Captain Richard G. Spear will serve Islesboro until the Smith completes its United States Coast Guard (USCG) hull inspection and shipyard period. The Spear is a 23-vehicle ferry and will not have the same capacity as the Margaret Chase Smith at 30 vehicles. This change of service is expected through the first three weeks of July.