J.F. Brennan Company, also known as Brennan Marine, is a fourth-generation, family-owned firm that has been a reliable resource in marine construction and environmental services since 1919. With over 100 years of experience, they specialize in a broad range of services, including environmental remediation, dam construction, harbor management, and submarine cable services.

The company operates across both coastal and inland waterways in the U.S., providing innovative solutions for complex maritime and infrastructure challenges. Their extensive service offerings encompass environmental dredging, habitat restoration, underwater inspections, and marine support, ensuring comprehensive support for water-based infrastructure projects.

Brennan is renowned for prioritizing safety, boasting one of the industry's leading safety programs that reflects their commitment to the well-being of both their employees and clients. The company’s core values, encapsulated in what they call "the Brennan Way," foster a collaborative culture that empowers individuals to succeed. With a focus on integrity and professionalism, J.F. Brennan Company continues to build on its rich legacy while navigating future challenges in the marine construction sector.