Open - All year roundPosition - 40 °32' N 74° 08' WTides;Reference port - Mean time differences - HW: minutes ± ; LW: minutes ±Heights in metres -   MHWS MHWN MLWN MLWS   .       Charts; NOAA 12327- Approach and Entrance - From the Atlantic Ocean make for Great Kills Harbor on the S shore of Staten Island. Mansion Marina lies on the W shore. Look for a large fuel dock house, with a Citgo sign, which sits at the end of the main pier.Berths & Moorings - 215 slips with 5 reserved for transients. Reservations are required.Maximum length - 70'Water - On the pontoons.Electric - On the pontoons.Fuel - On the fuel dock.Propane - Not known.Weather forecast - Not known.Security - Not known.Internet Access - Not known.Other Marina Facilities, Services & Supplies - Docking Assistance. Fax. Ice. Bait & Tackle. Toilets. Showers. Laundry. Boatyard Facilities & Services - Travelift (15T). Engine Mechanic. Canvas Work. Bottom Cleaning. Divers. Compound. Wash & Wax. Interior Cleaning. Propeller Repairs. Shopping and Provisions - All provisions can be obtained on Staten Island Contact ;Tel - (718) 984-6611Fax - (718) 984-0325