Mystic — The historic wooden whaleship Charles W. Morgan has been getting some touch-ups at Mystic Seaport Museum's Henry B. duPont Preservation Shipyard.

The Morgan, the oldest wooden vessel of its kind still in existence, has been hauled out for routine maintenance since mid-July. In addition to cleaning and repainting, the ship got a new sheathing of copper on its keel during the maintenance interval. Shipyard workers made final preparations Tuesday to refloat the ship on Wednesday and return it to Chubbs Wharf.

Each of the museum's three major historic vessels — the Morgan, the Joseph Conrad and the L.A. Dunton — are on three-year rotations to be hauled out for maintenance.