http://www.marinelink.com/news/bay-houston-towing-co-to-build-third-z-tech-harbor-tug313524
Bay-Houston Towing Co. to Build Third Z-Tech Harbor Tug
On April 16, 2007, Mark Kuebler, President of Bay-Houston Towing Co., signed a contract with Orange Shipbuilding for a Z-Tech harbor tug.