Watch: Ship does a donut on Lake Superior before entering Duluth Port

The captain was forced to take evasive action before entering the Duluth port.

Here's something you don't see every day – a 1,000-foot-long freighter pulling off a donut on Lake Superior.

The Paul R. Tregurtha was one of two ships required to take evasive action on Friday because of malfunctions with Duluth's famous Lift Bridge.

On Friday, cameras show the Tregurtha – the largest freighter on the Great Lakes – complete its 360-degree maneuver after the bridge suddenly stopped raising on approach.

Duluth Harbor Cam uploaded a timelapse video of the donut, saying the ship's captain had to make a "quick decision in order to prevent a disaster."

This footage taken by WDIO's storm cameras gives you a better view of the ship's movement.

It's also show as a timelapse, otherwise it'd look like the slowest donut in history.

That same night another ship, the Indiana Harbor, had to pull off a similar 360 after the bridge malfunctioned again.

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Lake Superior shipping season ends Wednesday night

The Edwin H. Gott pulled into the Duluth Seaway Port Wednesday morning. It is the final ship of the 2011 season. MPR reports the Soo Locks officially close Wednesday at midnight. The warm weather allowed the locks to stay open three days longer this last year.