About Brennan

Our mission is to create and execute innovative solutions to the world's most complex maritime, environmental, and infrastructure challenges. 

We are a fourth-generation, family-owned, marine construction firm that specializes in environmental remediation, dam construction, commercial dive, harbor management, and submarine cable services. Working closely with public and private owners of water-based infrastructure since 1919, Brennan operates throughout coastal and inland waterways nationwide, while maintaining a large fleet of marine equipment.

For more than a century, we've worked with clients and engineering firms with high levels of integrity and professionalism. Our approach to communication results in an extraordinary amount of transparency throughout our operations and leads to a collaborative environment for all stakeholders. We understand that success is not only measured by our outcome, but also through the process by which our outcome is achieved.