We are a full-service marina located in beautiful Henderson Harbor, New York, on the banks of Lake Ontario. Situated at the end of the Harbor, we offer deep, protected dockage, with easy access to the renowned fishing of Lake Ontario & The 1000 Islands, and a short drive from Watertown, NY.

Dockage Available for 2025 Season:

Yearly and Seasonal Undercover Dockage on Lake Ontario, NY for your power boat.

Uncovered Slips in our basin for sail and power boats dockage.

Marina Services:

20 ton travel lift able to lift boats up to 40′

Open end travel lift able to lift sailboats without dropping their masts
Yearly and seasonal covered dockage including power and water (floating docks now available)
Covered winter storage, winter land storage

Charter boats welcome

Shrink-wrapping for your boat is available

Boat launch ramp

Lounge with pool table

Bathroom & shower facilities at the Marina

Large deck overlooking the Lake

Free parking & less than a 30-minute drive from Watertown, New York & Thousand Islands

Please get in touch! We would love to hear from you:

Lake Ontario Mariners’ Marina (LOMM)
12548 Eastman Tract Henderson Harbor, NY 13651
315-938-5222 or ryancohen12@gmail.com

We are located in the 1000 Islands region on Lake Ontario near Watertown NY & upstate New York area. We are a family owned & run Marina and look forward to speaking with you.