Dear Members,

Please note that the St. Lawrence Seaway has issued the attached notice with updated speed restrictions for the Montreal / Lake Ontario (MLO) section to better account for vessel draft.

In addition to the speed limits outlined in the Seaway Practices & Procedures Schedule II – Table of Speeds, the following speed restrictions are also in effect in the MLO section:

LOCATION RESTRICTIONS
UPBOUND DOWNBOUND
Lake St. Louis, between Buoy A13 & Lower Entrance of Lower Beauharnois Lock

(Except between buoys A30 & A40 as noted below)
  • 10 knots for ships drafting greater than 76.0dm;
  • Revised to 11 knots for ships drafting 76.0dm or less
  • 12 knots for ships drafting greater than 76.0dm
  • Revised to 13 knots for ships drafting 76.0dm or less
Lake St. Louis, between buoys A30 & A40
  • 8 knots for all ships.
  • Ships drafting 76.0 dm or greater are to avoid ship meets above high spots.
  • 8 knots for all ships.
  • Ships drafting 76.0 dm or greater are to avoid ship meets above high spots.
Galop Island, between LB122 & LB127
  • 7 knots for ships drafting greater than 78.0dm
  • 12 knots for ships drafting greater than 78.0 dm
Sector IV, between buoys LB157 & LB162
  • 8.5 knots for ships drafting greater than 78.0dm
  • N/A

We invite members to consult the attached notice for additional details.

Best regards,

Nathan Phillips
Operations Analyst