Harborside Marine, Inc. Search | Advanced Search | New Members | Coupons and Discounts | All Categories   Other >> Retail/Ship Store Harborside Marine, Inc. 3 Beach StreetPort Jefferson, NY 11777 | View on Google Maps Peter Finn (631) 364-2978 | fax: (631) 473-0193 Visit Site Connect With Us Member Since: 2020