NOTICE: Due to COVID-19, ferry service/public access to the Island is suspended indefinitely.

Directions to the Ferry Dock

Our dock is located off Drydock Avenue in the Marine Industrial Park.


Directions to the Mainland Office

Our mainland office is located in The Design and Innovation Building at 21 Drydock Avenue (adjacent to Chickadee Restaurant). Take the elevators immediately to you left to the third floor. Once off the elevator, take a left through the double glass doors (you will see the TRIA architectural firm directly in front of you). Our office is on the left.

Parking for the Ferry

Public (paid) parking is available in the garage at 12 Drydock Avenue. Please allow 15 minutes to park and walk to the dock.

Directions from the garage to the dock:

Exit the garage at Drydock Avenue (if you’re facing the Harpoon Brewery, you exited on the wrong side of the garage). Turn right on Drydock Avenue and walk one block, passing Dunkin' Donuts on your right. The ferry dock is 100 yards ahead, just beyond the Boston Police Harbor Patrol Station. 

Parking for the Mainland Office

The Innovation and Design Building maintains an automated visitor parking lot at 1 Design Center Place. Payment for parking is by credit only and is collected at the lot exit gate. Hourly rates apply from 8 a.m. to 9 p.m.

Short term 90-minute visitor parking is available in designated spaces directly in front of the building.


Public Access

Due to COVID19, ferry service/public access to the Island has been suspended until further notice. 

Rules of Conduct

–There are limited trash cans on the Island; please take your trash with you.

–The following items and activities are strictly prohibited: Alcohol (unless part of an Island event that holds a liquor permit); Bicycle; Campfires; Disturbing or feeding wildlife; Dogs (except service dogs); Fireworks; Firearms and all other weapons; Littering. Boat captains may deny passage to any individual in violation of Island rules.

–In the unlikely case of an emergency, find a Thompson Island employee; if it is a life-threatening emergency, please contact the police: 617.343.4911.


–Avoid cliffs and bluffs; they may be crumbly or undercut.

–Weather conditions change rapidly; dress in layers.

–Bring water, sunscreen, and a hat

–Mosquitoes, biting flies, and ticks can be present on the Island; consider wearing long pants and long sleeved shirts and using insect repellents containing 20-30% DEET. If you experience signs and symptoms of an insect-borne disease, contact your physician immediately.