Houma Fabricators of Houma, La., is to construct a twin-screw tugboat for Nolty J. Theirot, Inc., Golden Meadow, La. The vessel, which has been designated Hull No. 25, will have the following dimensions: a length of 100 feet, a beam of 37 feet and a depth of 12 feet. It is to be powered with 3,000-total-bhp diesels.