NW-C-4594-26
PAN PANReceived: 30 Oct 2026, 00:00Updated: 1 Nov 2026, 12:53
analysis
ActiveShoal (10.6 m) reported between Trois-Rivières and Donnacona
A newly discovered shoal with least depth 10.6 metres is reported in the area between Trois-Rivières and Donnacona. The shoal is defined by four positions with centroid 46°33.907'N 072°06.477'W. Mariners should note the shoal and consult charts; this message cancels NW-C-3216-26.
Consult charts and navigate with caution; avoid the shoal area where practicable.
- 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 30 Oct 2026, 18:52 UTC
Date 2026-10-30 18:52 UTC. In Force Shoals number Q5297/26 refers. - Hazards
- shoal, shallow depth 10.6 m
- Least depth
- 10.6 m (35 ft)
- Cancels
- NW-C-3216-26
- Charts
- 1314(NAD83)
Coast stations for this area
- RCCJRCC QuebecCanada40 NM from the area
- RCCRCC BostonUnited States257 NM from the area
- RCCJRCC TrentonCanada272 NM from the area
- DSCDSC Station Trois-RivieresJRCC QuebecCanadaMMSI 003160027VHF 40range 40 NM17 NM from the area
- DSCDSC Station Mont BelairJRCC QuebecCanadaMMSI 003160027VHF 40range 40 NM29 NM from the area
- DSCDSC Station QuebecJRCC QuebecCanadaMMSI 003160027VHF 40range 40 NM40 NM from the area
- DSCDSC Station LauzonJRCC QuebecCanadaMMSI 003160027VHF 40range 40 NM42 NM from the area
- DSCDSC Station SorelJRCC QuebecCanadaMMSI 003160028VHF 40range 40 NM52 NM from the area
Generated automatically from the warning text on 30 Oct 2026, 19:17 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-4594-26
Date
2026-10-30 18:52 UTC
Status
Published
Title
Newly Discovered Dangers
Cancels
NW-C-3216-26
Areas
Trois-Rivières to Donnacona
Categories
Shallow Depth Confirmed
Description
Shoal located in area bounded by:
46 33.901N 072 06.419W
46 33.895N 072 06.533W
46 33.913N 072 06.535W
46 33.919N 072 06.421W
Depth: 10.6 metres
In Force Shoals number Q5297/26 refers.
Position
Centroid : 46° 33.907'N 072° 06.477'W
Pt 1: 46° 33.901'N 072° 06.419'W
Pt 2: 46° 33.895'N 072° 06.533'W
Pt 3: 46° 33.913'N 072° 06.535'W
Pt 4: 46° 33.919'N 072° 06.421'W
Charts
1314(NAD83)