Thursday, December 1, 2011

Duluth Harbor Boat Traffic for Wednesday 11/30/2011

Great Lakes Trader/Joyce L. Van Enkevort departed at 00:40
Mesabi Miner arrived at 07:15
Jette (Ant) arrived at 07:45
Paul R Tregutha arrived at 12:41
Arthur M. Anderson arrive at 18:30
American Mariner arrived at 18:30 
Kwintebank arrive at 19:30
Paul R. Tregurtha departed at 22:00

6 comments:

  1. Before the Miner comes under the bridge (on your 'new' camera,') it appears that there is a swirling current in the harbor. Is this some sort of time-delay-photography-induced illusion, or do these things develop in the harbor?

    (Great pics, too)

    -Dan

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  2. Dan,
    Yes, there are often strong currents at the canal as water flows back and fourth depending on weather conditions.

    Periodically the water levels rise and fall by as much as one foot due to a phenomenon called a "seiche" (SAYSH, a French word that means "to sway back and forth"). This happens when water piles up on one side of the lake because of wind or high barometric pressure and then shifts back to the other side. Small seiches occur all the time, but sometimes strong ones can cause ships to take corrective actions.

    More than one ship has been pushed into the breakwall at this location.

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  3. Is this the reason that the Miner had to have an assist from the tug?

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  5. The Miner certainly was having its problems. Probably a combination of wind, currents, and possibly mechanical.

    Than again, maybe a "woman driver"---oops - just kidding - don't show this to my wife!

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  6. Thanks for the info. It makes sense (there is an awful lot of water in the harbor after all,) I just didn't think about it.

    -Dan

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