Beauharnois Lock 3
Beauharnois, QC • St. Lawrence Seaway
- VHF
- 14/68 verify
- Phone
- Seaway pleasure craft contact / verify current notice
Great Loop Planning Resource
St. Lawrence Seaway Locks
Explore 7 reviewed public lock references on the St. Lawrence Seaway, including locations, VHF channels, phone numbers, and boater planning notes.
275Reviewed public locks
19States / provinces
29Waterways
275Total imported reference rows
No reviewed lock markers match the current filters.
Beauharnois Lock 4
Beauharnois, QC • St. Lawrence Seaway
- VHF
- 14/68 verify
- Phone
- Seaway pleasure craft contact / verify current notice
Côte Sainte-Catherine Lock
Sainte-Catherine, QC • St. Lawrence Seaway
- VHF
- 14/68 verify
- Phone
- Seaway pleasure craft contact / verify current notice
Eisenhower Lock
Massena, NY • St. Lawrence Seaway
- VHF
- 13/14 verify
- Phone
- 315-764-3200 verify
Iroquois Lock
Iroquois, ON • St. Lawrence Seaway
- VHF
- 14 verify
- Phone
- Seaway pleasure craft contact / verify current notice
Snell Lock
Massena, NY • St. Lawrence Seaway
- VHF
- 13/14 verify
- Phone
- 315-764-3231 verify
St. Lambert Lock
Saint-Lambert, QC • St. Lawrence Seaway
- VHF
- 14/68 verify
- Phone
- Seaway pleasure craft contact / verify current notice
No reviewed public lock rows match this view yet.
The library only displays reviewed rows marked public. Imported rows remain hidden until reviewed.
Locks in St. Lawrence Seaway
7 reviewed public lock references are available for this Great Loop view.
Beauharnois Lock 3
Beauharnois, QC • St. Lawrence Seaway
- VHF
- 14/68 verify
- Phone
- Seaway pleasure craft contact / verify current notice
Beauharnois Lock 4
Beauharnois, QC • St. Lawrence Seaway
- VHF
- 14/68 verify
- Phone
- Seaway pleasure craft contact / verify current notice
Côte Sainte-Catherine Lock
Sainte-Catherine, QC • St. Lawrence Seaway
- VHF
- 14/68 verify
- Phone
- Seaway pleasure craft contact / verify current notice
Eisenhower Lock
Massena, NY • St. Lawrence Seaway
- VHF
- 13/14 verify
- Phone
- 315-764-3200 verify
Iroquois Lock
Iroquois, ON • St. Lawrence Seaway
- VHF
- 14 verify
- Phone
- Seaway pleasure craft contact / verify current notice
Snell Lock
Massena, NY • St. Lawrence Seaway
- VHF
- 13/14 verify
- Phone
- 315-764-3231 verify
St. Lambert Lock
Saint-Lambert, QC • St. Lawrence Seaway
- VHF
- 14/68 verify
- Phone
- Seaway pleasure craft contact / verify current notice
Learn & Prepare
How to Lock Through
Approach slowly, prepare lines and fenders before arrival, monitor the published VHF channel when available, and follow lockmaster instructions.
VHF Call Scripts
Use the lock name, vessel name, direction of travel, and your request. Confirm current instructions before entering.
Lock Etiquette
Keep wake down near approaches, brief crew before entering, yield as directed, and avoid crowding other vessels.
Gear Checklist
Have fenders, lines, gloves, PFDs, boat hooks, and a working radio ready before reaching the approach.
Common Mistakes
Do not rely on old schedules, stale notes, or unofficial status reports. Check current notices and local lock instructions.
Navigation Safety Note
This page is a planning reference, not a substitute for official notices, charts, lockmaster instructions, or current local conditions. Always confirm lock status, operating hours, closures, restrictions, and instructions with the official authority before arrival.