NW-C-1438-26
PAN PANReceived: 13 May 2026, 00:00Updated: 2 Nov 2026, 01:50
analysis
ActiveShoal (7.4 m) reported between Montréal and Trois-Rivières
A newly discovered shoal with least depth 7.4 metres has been reported in the St. Lawrence River between Montréal and Trois-Rivières. The shoal is bounded by four positions with centroid at 46°12.493'N 072°48.877'W. Charted on chart 1312 (NAD83). This message cancels NW-C-0268-26.
Navigate with caution, consult chart 1312 and avoid the shoal area if passage depth is insufficient.
- 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
- Montréal to Trois-Rivières
- Validity
- From 13 May 2026, 19:06 UTC
Date 2026-05-13 19:06 UTC. In Force Shoals number Q5073/26 refers. - Hazards
- shoal, shallow depth
- Least depth
- 7.4 m (24 ft)
- Cancels
- NW-C-0268-26
- Charts
- 1312(NAD83)
Coast stations for this area
- RCCJRCC QuebecCanada76 NM from the area
- RCCJRCC TrentonCanada236 NM from the area
- RCCRCC BostonUnited States244 NM from the area
- DSCDSC Station SorelJRCC QuebecCanadaMMSI 003160028VHF 40range 40 NM16 NM from the area
- DSCDSC Station Trois-RivieresJRCC QuebecCanadaMMSI 003160027VHF 40range 40 NM19 NM from the area
- DSCDSC Station Mont-St. BrunoJRCC QuebecCanadaMMSI 003160028VHF 40range 40 NM45 NM from the area
- DSCDSC Station MontrealJRCC QuebecCanadaMMSI 003160028VHF 40range 40 NM52 NM from the area
- DSCDSC Station L’AcadieJRCC QuebecCanadaMMSI 003160028VHF 40range 40 NM58 NM from the area
Generated automatically from the warning text on 28 Sept 2026, 16:58 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-1438-26
Date
2026-05-13 19:06 UTC
Status
Published
Title
Newly Discovered Dangers
Cancels
NW-C-0268-26
Areas
Montréal to Trois-Rivières
Categories
Shallow Depth Confirmed
Description
Shoal located in area bounded by:
46 12.636N 072 48.461W
46 12.343N 072 49.288W
46 12.350N 072 49.293W
46 12.642N 072 48.466W
Depth: 7.4 metres
In Force Shoals number Q5073/26 refers.
Position
Centroid : 46° 12.493'N 072° 48.877'W
Pt 1: 46° 12.636'N 072° 48.461'W
Pt 2: 46° 12.343'N 072° 49.288'W
Pt 3: 46° 12.350'N 072° 49.293'W
Pt 4: 46° 12.642'N 072° 48.466'W
Charts
1312(NAD83)