Hydro-Marine, founded in 1997, is the construction division of The Castle Group and is staffed with highly trained, certified commercial divers (Association of Diving Contractors international / ADCI). Dedicated to the highest quality underwater contracting, Hydro-Marine offers complete diving services. Hydro-Marine has the unique advantage of working closely with W. J. Castle and, as part of The Castle Group, is very familiar with implementing complicated engineering solutions in even the most challenging circumstances.
 
Hydro-Marine is a certified Woman Business Enterprise (WBE) in multiple states, and can offer solutions to various contracts set-aside requirements. Whether we're working within our own Group, with insurance companies, or with other engineering firms, our skill and efficiency are second-to-none.
 
Hydro-Marine has enabled The Castle Group to provide construction and design/build services using our own personnel. This gives us tremendous control over projects, which leads to significant savings and timeliness for our clients. Access to structural and civil engineers, not to mention the quarter century of experience of its affiliate company, W.J. Castle, has made Hydro-Marine one of the premier marine construction companies on the East Coast.