NW-C-1112-26
PAN PANReceived: 29 Apr 2026, 00:00Updated: 2 Nov 2026, 01:50
analysis
ActiveShoal (7.7 m) reported between Trois-Rivières and Donnacona
A newly discovered shoal has been reported in the St. Lawrence River between Trois-Rivières and Donnacona. The feature is defined by four positions with a reported least depth of 7.7 m. Chart 1313 (NAD83) is affected. Shoals number Q5006/26 is referenced.
Navigate with caution, consult chart 1313 (NAD83) and avoid the shoal area where possible.
- 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
- Trois-Rivières to Donnacona
- Validity
- From 29 Apr 2026, 20:37 UTC
Date 2026-04-29 20:37 UTC; In Force Shoals number Q5006/26 refers. - Hazards
- shoal, shallow depth
- Least depth
- 7.7 m (25 ft)
- References
- Shoals number Q5006/26
- Charts
- 1313(NAD83)
Coast stations for this area
- RCCJRCC QuebecCanada54 NM from the area
- RCCRCC BostonUnited States250 NM from the area
- RCCJRCC TrentonCanada257 NM from the area
- DSCDSC Station Trois-RivieresJRCC QuebecCanadaMMSI 003160027VHF 40range 40 NM3 NM from the area
- DSCDSC Station SorelJRCC QuebecCanadaMMSI 003160028VHF 40range 40 NM37 NM from the area
- DSCDSC Station Mont BelairJRCC QuebecCanadaMMSI 003160027VHF 40range 40 NM44 NM from the area
- DSCDSC Station QuebecJRCC QuebecCanadaMMSI 003160027VHF 40range 40 NM54 NM from the area
- DSCDSC Station LauzonJRCC QuebecCanadaMMSI 003160027VHF 40range 40 NM56 NM from the area
Generated automatically from the warning text on 28 Sept 2026, 17:17 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-1112-26
Date
2026-04-29 20:37 UTC
Status
Published
Title
Newly Discovered Dangers
Areas
Trois-Rivières to Donnacona
Categories
Shallow Depth Confirmed
Description
Shoal located in area bounded by:
46 24.230N 72 23.012W
46 24.241N 72 23.148W
46 24.245N 72 23.147W
46 24.234N 72 23.011W
Depth: 7.7m
In Force Shoals number Q5006/26 refers.
Position
Centroid : 46° 24.237'N 072° 23.080'W
Pt 1: 46° 24.230'N 072° 23.012'W
Pt 2: 46° 24.241'N 072° 23.148'W
Pt 3: 46° 24.245'N 072° 23.147'W
Pt 4: 46° 24.234'N 072° 23.011'W
Charts
1313(NAD83)