About CSU

Diving ContractorCSU has long been the premier diving contractor in the United States for all pipeline inspection, repair, and construction in an underwater environment.

In 1975, Don Doleshal founded an underwater marine contracting company named CSU that specialized in the inspection and repair of pipeline throughout the United States. Today, CSU has grown and employs the personnel and management to act as your general contractor or turnkey design build firm for all pipeline and general civil construction and repair in the water or on land.

CSU is located in the Gulf Coast region and serves a wide variety of customers in the Gulf Coast and throughout the United States.

CSU's mission is to provide safe, professional and economical commercial diving and land based services. Our goal is to meet customer requirements to the fullest extent and to conduct our business in the most ethical manner. Our state of the art technology, equipment and techniques coupled with our skilled, knowledgeable and safety compliant employees set us apart from the competition.


Integrity - We take responsibility for our actions to build and protect our Company's reputation by always doing the right thing.
Safety - To safeguard our employees, our clients, the public and the environment, safety is our number one priority.
Quality - We take pride in our craftsmanship and accomplishments and are continually striving to be the leaders in our industry.
Perseverance - The determination to survive changing times through flexibility and innovation.


The professionals at CSU are ready to answer any questions you have about pipeline inspection, repair and construction in an underwater environment. For questions or a project consultation, please contact CSU at 281-324-9700 or complete the short Contact Form.