Long Island marine diesel & Generator specialists

Precision service, diagnostics, and installation for
marine diesel engines and generators.
Serving yacht owners and marinas from Nassau County to Montauk with professional diesel and generator service.

Authorized Dealer:

Marine Diesel Specialists

Comprehensive service and diagnostics for modern marine diesel engines including cooling systems, fuel systems, turbochargers, and electronic engine controls.

Generator Experts

Authorized sales and service support for Kohler and Fischer Panda generators, including installations, electrical diagnostics, and complete generator replacements.

Mobile Yacht Service

Professional dockside service throughout Long Island. From Nassau County marinas to Montauk harbors, AM Marine delivers dependable on-site expertise.

Marine Diesel Engine Service

Diagnostics, cooling system maintenance, turbocharger service, fuel system repairs, and preventative maintenance for modern marine diesel engines.

Marine Generator Service

Maintenance and repair for Kohler, Fischer Panda, and other marine generators including electrical diagnostics, control systems, and cooling system service.

Repower & Installation Projects

Complete engine and generator replacements, system upgrades, and professional installations designed for reliability and performance.

Advanced Ultrasonic Cooling System Cleaning

AM Marine utilizes an industrial ultrasonic cleaning system designed to remove salt deposits, scale, and internal buildup from marine cooling components.

This advanced cleaning process restores cooling efficiency and helps prevent overheating and performance loss.

Since 1910 our family has been rooted in Long Island’s boating industry.

AM Marine Service was founded on a lifelong connection to the marine industry.

Owner Anthony Musumeci grew up working at the historic DeGarmo boatyard on the South Shore of Long Island, a family business that operated from 1910 through 2012. After the yard was sold, Anthony continued his professional career with the New York City Fire Department, bringing the same discipline, technical precision, and dedication to service into the marine field.

What began in 2018 as a mobile marine service operation working out of a pickup truck has grown into a trusted provider of diesel engine and generator service for boat owners across Long Island.

Today AM Marine Service supports vessels from Nassau County to Montauk, delivering professional diagnostics, maintenance, and installation for modern marine propulsion and generator systems.