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Port of Dorchester

USDZM🇺🇸USA

Port Location

About Port of Dorchester

Dorchester Harbor is a small, sheltered harbor located in Massachusetts. It serves as a local port with facilities for tugs and compulsory pilotage.

Current Conditions

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Vessel Limits

Channel Depth
11ft
Tidal Range
3ft

Operations & Services

Port of Entry
Yes
Pilotage Compulsory
Yes
Tug Assistance
Yes
Cranes
Fixed, Mobile, Floating
Drydock
L
Repair Code
A

References & Identifiers

WPI No.
7250 →
GeoNames ID
4934965 →
Wikidata
Q85761456 →

Identification

UN/LOCODE
USDZM
Country
🇺🇸USA
Time Zone
UTC-5
Feature Type
HBR (Harbor)

Classification

Type
Marina
Harbor Type
Coastal natural
Shelter
Excellent

Region

Subdivision
US-MA
Area
US East Coast
Latitude
42.3067°
Longitude
-71.0519°

Nearby Vessels

Flag
Type
Name
Dist.
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Frequently Asked Questions

How do I navigate the approach to the Port of Dorchester?+
The approach to Dorchester is supported by 5 navigation aids within 50 nautical miles. The nearest is Pleasure Bay Lighthouse at 2.2 NM to the NE. Other aids include Long Island Head (4.4 NM ENE), Deer Island (4.8 NM ENE), Nix's Mate Daybeacon (5 NM ENE), Boston (7.3 NM E). Mariners should consult the relevant chart and List of Lights for full approach details.
What sea or ocean is the Port of Dorchester on?+
The Port of Dorchester is situated on the North Atlantic Ocean in US. The area falls within the temperate maritime climate zone, which can influence port operations and seasonal shipping patterns.
How do I track vessels arriving at or departing from the Port of Dorchester?+
You can track vessels near Dorchester (USDZM) in real time using MarineRadar. The platform displays live AIS positions of nearby ships, including vessel name, type, flag, speed, and course. Use the "Track Vessels Nearby" button on this page or search for USDZM on the live map.
What are the operating hours and time zone for the Port of Dorchester?+
The Port of Dorchester operates in the UTC-5 time zone. Operating hours, VTS schedules, and pilot availability vary — vessel agents should confirm with the port authority in advance, especially for night arrivals or weekend operations.