NW-C-4457-26
PAN PANArchivedReceived: 22 Oct 2026, 00:00Archived: 28 Oct 2026, 14:49Updated: 2 Nov 2026, 01:50
analysis
No longer in forceShoal (10.5 m) reported between Trois-Rivières and Donnacona
A shoal has been confirmed in the area between Trois-Rivières and Donnacona. Four bounding positions are given with a centroid at 46°39.230'N 071°46.332'W. Least depth over the shoal is 10.5 metres. The shoal is in force and refers to Shoals number Q5275/26.
Navigate with caution and avoid the shoal area.
- 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 22 Oct 2026, 18:29 UTC
In Force - Hazards
- shoal, shallow depth
- Least depth
- 10.5 m (34 ft)
- References
- Q5275/26
- Charts
- 1314(NAD83)
Coast stations for this area
- RCCJRCC QuebecCanada25 NM from the area
- RCCRCC BostonUnited States260 NM from the area
- RCCJRCC TrentonCanada287 NM from the area
- DSCDSC Station Mont BelairJRCC QuebecCanadaMMSI 003160027VHF 40range 40 NM15 NM from the area
- DSCDSC Station QuebecJRCC QuebecCanadaMMSI 003160027VHF 40range 40 NM25 NM from the area
- DSCDSC Station LauzonJRCC QuebecCanadaMMSI 003160027VHF 40range 40 NM27 NM from the area
- DSCDSC Station Trois-RivieresJRCC QuebecCanadaMMSI 003160027VHF 40range 40 NM32 NM from the area
- DSCDSC Station MontmagnyJRCC QuebecCanadaMMSI 003160027VHF 40range 40 NM54 NM from the area
Generated automatically from the warning text on 22 Oct 2026, 19:48 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-4457-26
Date
2026-10-22 18:29 UTC
Status
Published
Title
Newly Discovered Dangers
Areas
Trois-Rivières to Donnacona
Categories
Shallow Depth Confirmed
Description
Shoal located in area bounded by:
46 39.226N 071 46.331W
46 39.229N 071 46.338W
46 39.234N 071 46.334W
46 39.232N 071 46.327W
Depth: 10.5 metres
In Force Shoals number Q5275/26 refers.
Position
Centroid : 46° 39.230'N 071° 46.332'W
Pt 1: 46° 39.226'N 071° 46.331'W
Pt 2: 46° 39.229'N 071° 46.338'W
Pt 3: 46° 39.234'N 071° 46.334'W
Pt 4: 46° 39.232'N 071° 46.327'W
Charts
1314(NAD83)