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Old 19-10-2017, 10:27   #1
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St. Lawrence Seaway

Hello from Detroit, Can anyone help me find out the vertical clearance's in the St. Lawrence seaway from The atlantic to Lake Michigan? I am moving a 76' Sailboat into the lakes from Europe. Thanks
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Old 19-10-2017, 10:48   #2
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Re: St. Lawrence Seaway

Seawaymax vessels have air draft of 116 ft.

https://en.wikipedia.org/wiki/Seawaymax
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Old 20-10-2017, 05:48   #3
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Re: St. Lawrence Seaway

Greetings and welcome aboard the CF, Ralphtheboat.
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Old 20-10-2017, 06:08   #4
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Re: St. Lawrence Seaway

Howdy and Welcome Aboard CF, Ralphtheboat.

I have always wanted to sail or motor through the Saint Lawrence Seaway, to or from the Great Lakes.

Your upcoming voyage sounds like a good one to me.
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Old 20-10-2017, 06:18   #5
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Re: St. Lawrence Seaway

Quote:
Originally Posted by Ralphtheboat View Post
Hello from Detroit, Can anyone help me find out the vertical clearance's in the St. Lawrence seaway from The atlantic to Lake Michigan? I am moving a 76' Sailboat into the lakes from Europe. Thanks
Sorry to correct don, but the maximum vertical clearance from water line is 35.5 metres or approx. 85 feet.
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Old 20-10-2017, 06:30   #6
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Re: St. Lawrence Seaway

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Originally Posted by 1000 islands View Post
Sorry to correct don, but the maximum vertical clearance from water line is 35.5 metres or approx. 85 feet.
35.5 m = 116.468 ft.
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Old 20-10-2017, 06:42   #7
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Re: St. Lawrence Seaway

All the info is on the St. Lawrence seaway web site:

Vessel maximum: 225.5 m (740 ft.) length; 23.77 m (78 ft.) beam; 8.08 m (26 ft., 6 in.) draft; 35.5 m (116.5 ft.) height above water.

check Seaway System - The Seaway - Facts and Figures

You will need to start worrying about bridges in the Montreal area. You will need to call the CP bridge (VHF 68) to have it open as well as the two bridges in the Valleyfield area (West of Montreal). You can have the bridges status here Seaway System - Seaway Bridge Status

For the water level, tide and currents check this page Tides, Currents, and Water Levels

Good luck.

Let me know if you need help with locks in Montreal.
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Old 22-10-2017, 09:27   #8
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Re: St. Lawrence Seaway

Thanks to all for the information. It looks as though 116' is the winner.
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