NW-C-1124-26
PAN PANReceived: 29 Apr 2026, 00:00Updated: 2 Nov 2026, 01:50
analysis
ActiveShoal reported between Trois-Rivières and Donnacona (least depth 8.8 m)
A shoal has been discovered in the area between Trois-Rivières and Donnacona defined by four positions. The least depth over the shoal is reported as 8.8 m. The notice cancels NW-C-0302-26 and refers to Shoals number Q5018/26. No specific navigation instructions are given in the text.
Navigate with caution, reduce draft and avoid the shoal area if appropriate.
- 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, 20:40 UTC
Date 2026-04-29 20:40 UTC - Hazards
- shoal, shallow depth
- Least depth
- 8.8 m (29 ft)
- Cancels
- NW-C-0302-26
- Charts
- 1313(NAD83), 1314(NAD83)
Coast stations for this area
- RCCJRCC QuebecCanada46 NM from the area
- RCCRCC BostonUnited States254 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 NM36 NM from the area
- DSCDSC Station SorelJRCC QuebecCanadaMMSI 003160028VHF 40range 40 NM46 NM from the area
- DSCDSC Station QuebecJRCC QuebecCanadaMMSI 003160027VHF 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, 17:18 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-1124-26
Date
2026-04-29 20:40 UTC
Status
Published
Title
Newly Discovered Dangers
Cancels
NW-C-0302-26
Areas
Trois-Rivières to Donnacona
Categories
Shallow Depth Confirmed
Description
Shoal located in area bounded by:
46 30.590N 72 13.796W
46 29.660N 72 14.227W
46 29.674N 72 14.292W
46 30.605N 72 13.861W
Depth: 8.8m
In Force Shoals number Q5018/26 refers.
Position
Centroid : 46° 30.133'N 072° 14.044'W
Pt 1: 46° 30.590'N 072° 13.796'W
Pt 2: 46° 29.660'N 072° 14.227'W
Pt 3: 46° 29.674'N 072° 14.292'W
Pt 4: 46° 30.605'N 072° 13.861'W
Charts
1313(NAD83),
1314(NAD83)