The Coast Guard said the trouble is with the rudder post, which houses the rudder and is controlled by jet drives that help stabilize the Alakai. The Superferry is stuck at Honolulu Harbor. The problem was discovered Monday during a routine inspection.

The Superferry said it's a one day fix and insists the rough seas have kept it from sailing, not the repairs.

However, the Coast Guard said there's a definite safety concern and officials are keeping a close eye on the situation since this is a new type of vessel.

The editor of the Molokai Advertiser, the newspaper on that island took these images of the vessel underway last Saturday showing just how rough it can be between Maui and Molokai.

You can see the Alakai pitched up and then down in the two images. It's not known if the rough weather contributed to the damage.

The Coast Guard did take a look at the damage and instructed the Superferry to remain in port until the problem was fixed.

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