NW-C-4311-26
Received: 12 Oct 2026, 00:00Updated: 30 Oct 2026, 22:09
analysis
ActiveConstruction (riprap reinforcement and cofferdam) near Masson, Ottawa River
Construction operations including riprap reinforcement and cofferdam construction will take place in the vicinity of Masson on the Ottawa River beginning 13 Oct 2026. Position given as 45° 31.683'N 075° 23.833'W. Mariners are advised of works in progress in the area. No contact details or safety zones are provided in this notice.
Navigate with caution and keep clear of the works area; maintain a good lookout and reduce speed when passing.
- Type
- Dredging / works · severity moderate
- Feed
- Offshore works, rigs and towingAll warnings of this kind on the map (contributors), or as an API feed: /api/v2/feeds/offshore/
- Location
- Ottawa River, vicinity Masson
- Validity
- From 13 Oct 2026, 00:00 UTC
beginning 13 Oct 2026 - Activity periods
- 13 Oct 2026, 00:00 UTC - ? (Construction operations beginning 13 Oct 2026)
- Hazards
- riprap reinforcement, cofferdam construction, construction operations
- Charts
- 1515(NAD83)
Coast stations for this area
- RCCJRCC TrentonCanada124 NM from the area
- RCCJRCC QuebecCanada191 NM from the area
- RCCRCC BostonUnited States268 NM from the area
- DSCDSC Station CornwallJRCC TrentonCanadaMMSI 003160029VHF 40range 40 NM42 NM from the area
- DSCDSC Station CardinalJRCC TrentonCanadaMMSI 003160029VHF 40range 40 NM45 NM from the area
- DSCDSC Station Mont RigaudJRCC QuebecCanadaMMSI 003160028VHF 40range 40 NM46 NM from the area
- DSCDSC Station MontrealJRCC QuebecCanadaMMSI 003160028VHF 40range 40 NM78 NM from the area
- DSCDSC Station Mont-St. BrunoJRCC QuebecCanadaMMSI 003160028VHF 40range 40 NM87 NM from the area
Generated automatically from the warning text on 12 Oct 2026, 11:57 UTC. It can be wrong: the original warning below is the authoritative text.
Message content
NW-C-4311-26
Date
2026-10-12 11:07 UTC
Status
Published
Title
Marine Works
Areas
Ottawa River 1
Vicinity
Masson
Categories
Works in Progress
Description
Construction operations including riprap reinforcement and cofferdam construction taking place in the vicinity of 45 31.683N 075 23.833W beginning 13 Oct 2026.
Position
45° 31.683'N 075° 23.833'W
Charts
1515(NAD83)