Waterfront Partners sued Hawaii Superferry in Circuit Court today, alleging that Superferry has failed to pay $51,310 in rent on its leased headquarters at One Waterfront Plaza.

The landlord alleges Superferry stopped making lease payments on March 20, the day after Superferry ceased operations in Hawai'i because of a state Supreme Court ruling. Superferry officials are looking for lease options for the Alakai and a second catamaran but have not ruled out returning to the Islands.

The Supreme Court ruled that a law allowing Superferry to operate while the state prepares an environmental impact statement was unconstitutional.

In the complaint filed with the court yesterday, the landlord accuses Superferry of breach of contract and unjust enrichment. The suit alleges Superferry leased the office space through July 2013.

Superferry officials could not be reached for comment.