NW-C-3763-25
analysis
ActiveAnchorage TR1 in Trois-Rivières allowed depth 11.3 m within defined polygon
The Canadian Coast Guard published the VN-200 chart identifying maintained depths of the Saint Lawrence Waterway. A natural over-depth at anchorage TR1 in the port of Trois-Rivières allows an exceptional depth of 11.3 m instead of 10.7 m within the polygon defined in the notice. Vessels must obtain anchoring authorization and comply with procedures established by the Trois-Rivières Port Authority. Chart 1313(NAD83) is referenced.
Obtain anchoring authorization and comply with procedures established by the Trois-Rivières Port Authority before anchoring in TR1.
- Type
- Survey operations · severity moderate
- Feed
- Survey operationsAll warnings of this kind on the map (contributors), or as an API feed: /api/v2/feeds/survey/
- Location
- Port of Trois-Rivières (Trois-Rivières to Donnacona), vicinity Trois-Rivières
- Validity
- From 10 Dec 2025, 16:02 UTC
Date 2025-12-10 16:02 UTC - Hazards
- changed maintained depth, anchorage depth change
- Least depth
- 11.3 m (37 ft)
- Cancels
- NW-C-3760-25
- Charts
- 1313(NAD83)
Coast stations for this area
- RCCJRCC QuebecCanada62 NM from the area
- RCCRCC BostonUnited States248 NM from the area
- RCCJRCC TrentonCanada250 NM from the area
- DSCDSC Station Trois-RivieresJRCC QuebecCanadaMMSI 003160027VHF 40range 40 NM6 NM from the area
- DSCDSC Station SorelJRCC QuebecCanadaMMSI 003160028VHF 40range 40 NM29 NM from the area
- DSCDSC Station Mont BelairJRCC QuebecCanadaMMSI 003160027VHF 40range 40 NM52 NM from the area
- DSCDSC Station Mont-St. BrunoJRCC QuebecCanadaMMSI 003160028VHF 40range 40 NM58 NM from the area
- DSCDSC Station QuebecJRCC QuebecCanadaMMSI 003160027VHF 40range 40 NM62 NM from the area
Generated automatically from the warning text on 28 Sept 2026, 18:18 UTC. It can be wrong: the original warning below is the authoritative text.
Keywords
- Geometry refscircle_radius, polygon
- Geometry phrasespolygon, within