NW-C-1122-26
PAN PANReceived: 29 Apr 2026, 00:00Updated: 2 Nov 2026, 01:50
analysis
ActiveNew shoal reported between Trois-Rivières and Donnacona (depth 9.5 m)
A shoal has been confirmed in the area between Trois-Rivières and Donnacona. The shoal is bounded by four positions with a reported least depth of 9.5 m. Charts 1313(NAD83) and 1314(NAD83) are affected. This notice cancels NW-C-0314-26.
Navigate with caution, note the shoal positions on chart and avoid the bounded area.
- Type
- Navigational hazard · 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, 20:39 UTC
Shoal located in area bounded by: (positions given). In Force Shoals number Q5016/26 refers. - Hazards
- shoal, shallow depth (9.5 m)
- Least depth
- 9.5 m (31 ft)
- Cancels
- NW-C-0314-26
- Charts
- 1313(NAD83), 1314(NAD83)
Coast stations for this area
- RCCJRCC QuebecCanada46 NM from the area
- RCCRCC BostonUnited States255 NM from the area
- RCCJRCC TrentonCanada266 NM from the area
- DSCDSC Station Trois-RivieresJRCC QuebecCanadaMMSI 003160027VHF 40range 40 NM11 NM from the area
- DSCDSC Station Mont BelairJRCC QuebecCanadaMMSI 003160027VHF 40range 40 NM35 NM from the area
- DSCDSC Station QuebecJRCC QuebecCanadaMMSI 003160027VHF 40range 40 NM46 NM from the area
- DSCDSC Station SorelJRCC QuebecCanadaMMSI 003160028VHF 40range 40 NM46 NM from the area
- DSCDSC Station LauzonJRCC QuebecCanadaMMSI 003160027VHF 40range 40 NM48 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-1122-26
Date
2026-04-29 20:39 UTC
Status
Published
Title
Newly Discovered Dangers
Cancels
NW-C-0314-26
Areas
Trois-Rivières to Donnacona
Categories
Shallow Depth Confirmed
Description
Shoal located in area bounded by:
46 30.624N 72 13.697W
46 30.324N 72 13.836W
46 30.336N 72 13.890W
46 30.636N 72 13.751W
Depth: 9.5m
In Force Shoals number Q5016/26 refers.
Position
Centroid : 46° 30.480'N 072° 13.794'W
Pt 1: 46° 30.624'N 072° 13.697'W
Pt 2: 46° 30.324'N 072° 13.836'W
Pt 3: 46° 30.336'N 072° 13.890'W
Pt 4: 46° 30.636'N 072° 13.751'W
Charts
1313(NAD83),
1314(NAD83)