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NW-C-4518-26

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Shoal (11.0 m) discovered between Trois-Rivières and Donnacona

No longer in forceReceived 27 Oct 2026, 00:00 UTCArchived 29 Oct 2026, 18:46 UTC

Warning text

Positions open on the map
NW-C-4518-26 Date 2026-10-27 16:09 UTC Status Published Title Newly Discovered Dangers Cancels NW-C-3733-26 Areas Trois-Rivières to Donnacona Categories Shallow Depth Confirmed Description Shoal located in area bounded by: 46 24.673N 072 23.144W 46 24.669N 072 23.150W 46 24.678N 072 23.161W 46 24.682N 072 23.154W Depth: 11.0 metres In Force Shoals number Q5285/26 refers. Position Centroid : Pt 1: Pt 2: Pt 3: Pt 4: Charts 1313(NAD83)

Analysis

No longer in force

A newly discovered shoal has been confirmed in the St. Lawrence River between Trois-Rivières and Donnacona. Four positions defining the shoal are given; least depth reported 11.0 metres. The warning is in force and cancels NW-C-3733-26. Mariners are advised to navigate with caution in the area and refer to chart 1313 (NAD83).

Navigate with caution, avoid the shoal area if possible and consult chart 1313 (NAD83).

Type
Wreck / obstruction · severity moderate
Feed
Wrecks, obstructions and drifting objectsAll warnings of this kind on the map, or as an API feed.
Location
Trois-Rivières to Donnacona
Validity
From 27 Oct 2026, 16:09 UTC
In Force Shoals number Q5285/26 refers.
Hazards
shoal, shallow depth 11.0 metres
Least depth
11 m (36 ft)
Cancels
NW-C-3733-26

Coast stations for this area

Worked out automatically from the warning text on 27 Oct 2026, 17:17 UTC. It can be wrong: the official warning text is the authority.

KeywordsDANGER

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