99% Fresh water boat. 99% stored in a covered slip. She has a mirror finish and is kept squeaky clean from bilge to the anchor light. Updated interior. 485 HP Detroit Diesel 6-71 TIs. Take a close look at the pictures to see a rare fresh water condition 52' Cockpit Motor Yacht. The Californians are at home on inland lakes and rivers or at sea which makes them excellent choices for the Great Circle and Island Cruising. Come see for yourself how tough and comfortable Mary Kathleen is. Maintenance Log available.