Three Mile Harbor Moorings via Harbor Marina receives transient boaters between the operating hours of 9:00am to 5:00pm, 7 days a week in season. Check in time is at 11:00am. Please use VHF Channel 9 to contact us during our regular operating hours when you arrive in the Three Mile Harbor Channel Entrance and we will offer you full service dockage and support, including any related marina services during our regular, scheduled hours of operation. Should you require a late check-in or departure, please contact us in advance so we can properly support your boating trip. We do not provide a launch service for our moorings at this time. Thank you and Happy Boating from the Three Mile Harbor Mooring Team.