NW-C-1129-26
PAN PANReceived: 29 Apr 2026, 00:00Updated: 2 Nov 2026, 01:50
analysis
ActiveShoal reported between Montréal and Trois-Rivières (depth 11.1 m)
A shoal has been confirmed in the St. Lawrence River between Montréal and Trois-Rivières. The shoal area is given by four positions; centroid position 46°16.762'N 072°36.508'W and least depth 11.1 m. Shoals number Q5023/26 is referenced. This notice cancels NW-C-0263-26.
Navigate with caution and note the shoal position on charts; keep a proper lookout and consult updated charts and publications.
- Type
- Wreck / obstruction · severity moderate
- Feed
- Wrecks, obstructions and drifting objectsAll warnings of this kind on the map (contributors), or as an API feed: /api/v2/feeds/hazards/
- Location
- Montréal to Trois-Rivières
- Validity
- From 29 Apr 2026, 20:44 UTC
In Force. Shoals number Q5023/26 refers. - Hazards
- shoal, shallow depth
- Least depth
- 11.1 m (36 ft)
- Cancels
- NW-C-0263-26
- Charts
- 1313(NAD83)
Coast stations for this area
- RCCJRCC QuebecCanada66 NM from the area
- RCCRCC BostonUnited States245 NM from the area
- RCCJRCC TrentonCanada245 NM from the area
- DSCDSC Station Trois-RivieresJRCC QuebecCanadaMMSI 003160027VHF 40range 40 NM10 NM from the area
- DSCDSC Station SorelJRCC QuebecCanadaMMSI 003160028VHF 40range 40 NM25 NM from the area
- DSCDSC Station Mont-St. BrunoJRCC QuebecCanadaMMSI 003160028VHF 40range 40 NM53 NM from the area
- DSCDSC Station Mont BelairJRCC QuebecCanadaMMSI 003160027VHF 40range 40 NM56 NM from the area
- DSCDSC Station MontrealJRCC QuebecCanadaMMSI 003160028VHF 40range 40 NM60 NM from the area
Generated automatically from the warning text on 28 Sept 2026, 17:09 UTC. It can be wrong: the original warning below is the authoritative text.
Keywords
- Geometry refsbounded, polygon
- Dangerous AreaDANGER
- Geometry phrasesarea bounded, bounded by
Message content
NW-C-1129-26
Date
2026-04-29 20:44 UTC
Status
Published
Title
Newly Discovered Dangers
Cancels
NW-C-0263-26
Areas
Montréal to Trois-Rivières
Categories
Shallow Depth Confirmed
Description
Shoal located in area bounded by:
46 16.762N 072 36.507W
46 16.761N 072 36.508W
46 16.762N 072 36.509W
46 16.763N 072 36.508W
Depth: 11.1m
In Force Shoals number Q5023/26 refers.
Position
Centroid : 46° 16.762'N 072° 36.508'W
Pt 1: 46° 16.762'N 072° 36.507'W
Pt 2: 46° 16.761'N 072° 36.508'W
Pt 3: 46° 16.762'N 072° 36.509'W
Pt 4: 46° 16.763'N 072° 36.508'W
Charts
1313(NAD83)