Mariners Cay Marina Boat Slips For Sale Folly Beach Mariners Cay Marina is located within the gates of Mariner’s Cay neighborhood which also is home to not only the waterfront townhouses of Mariner’s Cay townhomes, but also Marshview Villas. There are monthly fees associated with owning a boat slip here at this marina. If you have any questions about the marina please call dockmaster Ed at 843-607-4254. MLS Listings Data Total Listings: 4 Average Price: $27,438 Highest Listing Price: $32,500 Average Days On Market: 177 Boat slips for sale Folly Beach SC at Mariner's Cay marina total 4. Contact the area's #1 boat slip and marina expert sales broker in Charleston to purchase or sell a wet slip at Mariner's Cay marina in Folly Beach SC. Relative Sort by Year Built: low to high Sort by Year Built: high to low Sort by price: low to high Sort by price: high to low Sort from oldest to newest Sort from newest to oldest Sort by status: active to under contract Sort by status: under contract to active Saving Subscribe Unsubscribe Loading...