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Port Madison

USPDI🇺🇸USA

Port Madison is a marina located on the west shore of Puget Sound in Washington State. It is a sheltered harbor with facilities for pilotage and tugs.

Background
Port Madison, sometimes called Port Madison Bay, is a deep water bay located on the west shore of Puget Sound in western Washington. It is bounded on the north by Indianola, on the west by Suquamish, and on the south by Bainbridge Island. Port Madison connects to Bainbridge Island via the Agate Pass Bridge to the southwest. Two small bays open off Port Madison: Miller Bay to the northwest, and another small bay to the south which, confusingly, is also called Port Madison Bay.
Loading current conditions…
Tidal Range
2ft
Elevation
4m
Port of Entry
Unknown
Pilotage Compulsory
Unknown
Tug Assistance
Unknown
Drydock
U
Repair Code
U
UN/LOCODE
USPDI
Country
🇺🇸USA
Time Zone
UTC-8
Feature Type
MAR (Marina)
Type
Port
Harbor Type
Coastal natural
Shelter
Excellent
Subdivision
US-WA
Latitude
47.7000°
Longitude
-122.5667°
Flag
Type
Name
Dist.
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How do I navigate the approach to the Port Madison?+
The approach to Port Madison is supported by 5 navigation aids within 50 nautical miles. The nearest is West Point Lighthouse at 5.8 NM to the ESE. Other aids include Alki Point (9.5 NM SE), Swiftsure (10.3 NM ESE), Point No Point (12.8 NM N), Skunk Bay (13.2 NM N). Mariners should consult the relevant chart and List of Lights for full approach details.
What major shipping routes pass near the Port Madison?+
The Port Madison is located within the US West Coast shipping lane — a major trans-Pacific trade route serving West Coast ports of the United States. This strategic position influences vessel traffic density, anchorage availability, and port scheduling.
How do I track vessels arriving at or departing from the Port Madison?+
You can track vessels near Port Madison (USPDI) 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 USPDI on the live map.
What are the operating hours and time zone for the Port Madison?+
The Port Madison operates in the UTC-8 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.