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Port of Sarnia

CASNI🇨🇦Canada

Port Location

Port Arrivals & Departures

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Port of Sarnia CASNI

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About Port of Sarnia

This Canadian harbor on the St. Clair River handles bulk cargo. It is equipped with tugs and is a compulsory pilotage port.

Background
Sarnia is a city in Lambton County, Ontario, Canada. It had a 2021 population of 72,047, and is the largest city on Lake Huron. Sarnia is located on the eastern bank of the junction between the Upper and Lower Great Lakes, where Lake Huron flows into the St. Clair River in the Southwestern Ontario region, which forms the Canada–United States border, directly across from Port Huron, Michigan.

Current Conditions

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Vessel Limits

Channel Depth
5ft
Elevation
175m

Operations & Services

Port of Entry
Yes
Pilotage Compulsory
Yes
Tug Assistance
Yes
Drydock
Unknown
Repair Code
A

References & Identifiers

WPI No.
3700 →
GeoNames ID
6141193 →
Wikidata
Q34106 →
Wikipedia
Read on Wikipedia →
Official Site
www.sarnia.ca →

Identification

UN/LOCODE
CASNI
Country
🇨🇦Canada
Time Zone
UTC-5
Feature Type
HBR (Harbor)

Classification

Type
Port
Harbor Type
River natural
Shelter
Excellent

Region

Subdivision
CA-ON
Area
Great Lakes
Sub-area
Lake Huron
Latitude
42.9718°
Longitude
-82.4113°

Nearby Vessels

Flag
Type
Name
Dist.
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Frequently Asked Questions

How do I navigate the approach to the Port of Sarnia?

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The approach to Sarnia is supported by 5 navigation aids within 50 nautical miles. The nearest is Huron Lighthouse at 1.3 NM to the NNW. Other aids include Fort Gratiot Range Rear (1.4 NM NNW), Fort Gratiot Range Front (1.5 NM NNW), Point Edward Range Front (1.9 NM N), Fort Gratiot (2.1 NM NNW). Mariners should consult the relevant chart and List of Lights for full approach details.

What sea or ocean is the Port of Sarnia on?

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The Port of Sarnia is situated on the North Pacific Ocean in CA. 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 Sarnia?

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You can track vessels near Sarnia (CASNI) 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 CASNI on the live map.

Where is the Port of Sarnia?

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The Port of Sarnia is a port in CA. Its UN/LOCODE is CASNI — the five-character code the UNECE assigns to trade and transport locations, and the identifier used on shipping documents and in port calls.

What does the UN/LOCODE CASNI mean?

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The first two characters, CA, are the ISO country code for CA. The remaining three identify the location within that country. The code is issued by the United Nations Economic Commission for Europe and is the international standard for naming ports in trade and transport systems.

What are the operating hours and time zone for the Port of Sarnia?

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The Port of Sarnia 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.