NW-C-1123-26
PAN PANReceived: 29 Apr 2026, 00:00Updated: 2 Nov 2026, 01:50
analysis
ExpiredShoal with least depth 9.3 m reported between Trois-Rivières and Donnacona
A shoal has been reported in the area between Trois-Rivières and Donnacona bounded by four positions (centroid 46°30.383'N 072°13.880'W). The least depth over the shoal is 9.3 m. This warning cancels NW-C-0311-26 and gives no expiry time.
Navigate with caution and avoid the shoal; consult charts and update voyage plan accordingly.
- 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, 20:39 UTC
Date 2026-04-29 20:39 UTC - Hazards
- shoal, shallow depth
- Least depth
- 9.3 m (31 ft)
- Cancels
- NW-C-0311-26
- 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, 17:17 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-1123-26
Date
2026-04-29 20:39 UTC
Status
Published
Title
Newly Discovered Dangers
Cancels
NW-C-0311-26
Areas
Trois-Rivières to Donnacona
Categories
Shallow Depth Confirmed
Description
Shoal located in area bounded by:
46 30.606N 72 13.764W
46 30.156N 72 13.972W
46 30.162N 72 13.996W
46 30.612N 72 13.787W
Depth: 9.3m
In Force Shoals number Q5017/26 refers.
Position
Centroid : 46° 30.383'N 072° 13.880'W
Pt 1: 46° 30.606'N 072° 13.764'W
Pt 2: 46° 30.156'N 072° 13.972'W
Pt 3: 46° 30.162'N 072° 13.996'W
Pt 4: 46° 30.612'N 072° 13.787'W
Charts
1313(NAD83),
1314(NAD83)