The Lynn Harbormaster and Shellfish Constable is responsible for assuring boating safety and protect life, natural resources, and property in Lynn Harbor's waterways. The harbormaster conducts rescue operations, responds to boating emergencies, enforces boating regulations, manages moorings, and maintains the town piers.
Lynn Harbor's Seaport Marina offers modern boating facilities and services for residents and visitors. The Lynn Harbor Marina can accommodate 165 vessels of up to 19.8 meters (65 feet) long. Facilities at the marina include restrooms, showers, and a catalog store.