- Shelter
- NW, N, NE, W, E, SW, S, SE
- Seabed
- mud
- Anchoring
- Allowed
Anchorage in Mount Sinai Harbor on the north shore of Long Island, about a mile north-east of Port Jefferson, New York, on a mud bottom.
- Water
- Mooring buoys
- Pontoon
- Beach
Guide
Approach and anchoring
Enter through the jettied inlet on the north shore, then carry on into the harbour, which is enclosed on all quarters. Anchoring space is limited at the eastern end of the harbour and the holding is reported unreliable, so make sure the anchor is well set. A mooring field controlled by the Town of Brookhaven can take up to 500 boats.
Practical
Fresh water available ashore. Old Man's Boat Yard lies 0.6 mile west and Mt Sinai Yacht Club 0.7 mile west, both taking transient visitors.
Ashore
Cedar Beach borders the harbour on the Long Island Sound side, a sand beach within reach by tender.
Key facts
- Type
- Anchorage
- Coordinates
- 40.96282, -73.02280 (40°57.77'N 73°1.37'W)
- Country
- United States
- Shelter
- Sheltered from north-west, north, north-east, west, east, south-west, south, south-east winds
- Seabed
- mud
- Anchoring
- Allowed
- Services
- Water, Mooring buoys, Pontoon, Beach
- Boaters' rating
- 2.0/5
- Updated
- July 7, 2026
Getting there
Mount Sinai lies at 40°57.77'N 73°1.37'W, that is 40.96282, -73.02280 in decimal degrees.
Boaters' reviews
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Write a reviewFrequently asked questions
Which winds is Mount Sinai sheltered from?
Mount Sinai is sheltered from north-west, north, north-east, west, east, south-west, south, south-east winds.
Can you anchor at Mount Sinai?
Yes, anchoring is allowed at Mount Sinai.
How do boaters rate Mount Sinai?
Mount Sinai is rated 2.0/5 by boaters on BoatMap.
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