Projects
Substructure provides marine industrial services to commercial and government organizations worldwide.
Our state-of-the-art underwater capabilities include ultra-high-resolution hydrographic surveying and mapping, epoxy marine pile encapsulation, and corrosion control for structures and vessels. In addition, Substructure offers commercial diving, marine design and fabrication, ship husbandry and salvage, and archeological search and recovery services. With our custom-built hydrographic survey vessel, Orion, we perform multibeam seafloor characterizations with very high accuracy and repeatability.
| Project | Location | Category |
|---|---|---|
| Dredge surveys for federal navigational channel project — pre, payment, clearance, and post | Dover, NH | Hydrographic Survey |
| Dredging assessment multibeam survey – post-dredge | Portsmouth, NH | Hydrographic Survey |
| Multibeam dredging surveys for federal navigational project — pre and post | South Portland, ME | Hydrographic Survey |
| Integration of an R2Sonic Sonic 2024, IXSEA FINS, and QPS QINSy for Hydro2009 Conference | Norfolk, VA | Hydrographic Survey Systems Integration |
| Multibeam and backscatter surveys of artificial rubble reefs | Newport, RI | Hydrographic Survey |
| Post-construction multibeam clearance survey of navy drydock facility | Kittery, ME | Hydrographic Survey |
| Pre-construction multibeam survey for new bridge over federal navigational channel | Amesbury, MA | Hydrographic Survey |
| Site characterization multibeam, backscatter, and sub-bottom profiling surveys | Peekskill, NY | Hydrographic Survey Geophysical Survey |
| Structural assessment multibeam and topographic surveys – jetties, inlet, and beachfront | Mount Sinai Harbor, NY | Hydrographic Survey Topographic Survey |
| Structural assessment multibeam survey – bridges | Portsmouth, NH | Hydrographic Survey |
| Video inspection of sonar array | Bath, ME | Commercial Diving |
| Construction survey assistance for placement of marine structures | Newington, NH | Hydrographic Survey |
| Dredging assessment multibeam survey of private marina | Portsmouth, NH | Hydrographic Survey |
| Expert analysis of previously collected side-scan data | Gulf of Maine, ME | Hydrographic Post Processing and Data Analysis |
| Multibeam and backscatter surveys for thermal generation baseline and geophysical study | Portsmouth, NH | Hydrographic Survey |
| Multibeam, backscatter and side-scan sonar surveys – baseline for sediment remediation study | Marathon, Ontario | Hydrographic Survey |
| Structural assessment multibeam surveys – marine terminal pre- and post-construction | Portsmouth, NH | Hydrographic Survey |
| Structural assessment multibeam surveys – jetty | Portsmouth, NH | Hydrographic Survey |
| Single-beam survey of raw water intake channel | Saugus, MA | Hydrographic Survey |
| Construction survey assistance for placement of marine structures | Newington, NH | Hydrographic Survey Marine Construction |
| Design/build hydrographic sound velocity profiler (SVP) winch | Philadelphia, PA | Design Build Fabricate |
| Design/build mooring system upgrades | Newington, NH | Design Build Fabricate |
| Design/build mooring winch platform and farelead, ship gangway reconstruction, 600′ pennant line spools | Newington, NH | Design Build Fabricate |
| Design/build redundant cofferdam plugs for ship repair | Kittery, ME | Design Build Fabricate |
| Design/build stop-logs (hydro gates) and guides | Saugus, MA | Design Build Fabricate |
| Design/build pile stabilization structure | Portsmouth, NH | Design Build Fabricate Install |
| Inspection and maintenance of river water outfall and diffuser system | Newington, NH | Commercial Diving |
| Inspection and maintenance of power plant raw water intake and outfall diffuser | Newington, NH | Commercial Diving Inspection Marine Construction |
| Underwater intake gate repairs | Lowell, MA | Commercial Diving Marine Construction |
| Inspection and maintenance of power plant raw water intake and outfall diffuser | Saugus, MA | Commercial Diving Inspection |
| Underwater intake gate repairs | Lowell, MA | Commercial Diving Marine Construction |
| Consulting, plural-component pump operations for APE epoxy encapsulations | Manzanillo, Mexico | Commercial Diving Marine Construction |
| Emergency inspection and maintenance of ship propeller | Newington, NH | Commercial Diving Video Inspection |
| Ship docking fender repairs | Newington, NH | Commercial Diving Marine Construction |
| Ship docking fender system rehabilitation | Portsmouth, NH | Commercial Diving Marine Construction |
| Emergency waterfront facility repairs | Newington, NH | Marine Construction |
| Underwater structural assessment of bridge abutments | Nashua, NH | Commercial Diving Video Inspection |
| Design/build new vessel mooring structures for berthing of oceangoing ships and barges | Newington, NH | Design Build Fabricate Marine Construction |
| Inspection and evaluation of raw water intake of municipal drinking water treatment plant | Lowell, MA | Commercial Diving Video Inspection |
| Inspection and maintenance of raw water intake structure for fire suppression system | Portsmouth, NH | Commercial Diving Marine Construction |
| Consulting, plural-component pump operations for APE epoxy encapsulations | Providence, RI | Commercial Diving Marine Construction |
| Construct and install new raw water intake structure and screen for municipal drinking water supply | Pittsfield, NH | Design Build Fabricate Commercial Diving Design Build Fabricate |
| Inspection and evaluation of ship berthing structures | Oceanside, NY | Commercial Diving Marine Construction |
| Installation of diffuser and baffles in chlorination mixing chamber to AWWA standards | Lowell, MA | Commercial Diving Marine Construction |
| Installation of ship fendering system and application of marine coatings | Newington, NH | Commercial Diving Marine Construction |
| Inspection and maintenance of municipal drinking water intake | Beverly, MA | Commercial Diving |
| Inspection and maintenance of commercial and non-commercial municipal dock systems | Beverly, MA | Commercial Diving Marine Construction |
| Inspection of raw water outfall and diffuser | Salem, MA | Commercial Diving |
| Installation of sacrificial anodes welded to class B AWS standards | Newington, NH | Commercial Diving Marine Construction |
| Installation of two power cables for lift span on a Route 1 bypass bridge | Newington, NH | Commercial Diving Marine Construction |
| Mooring bollard installation | Newington, NH | Marine Construction |
| Consulting, plural-component pump operations for APE epoxy encapsulations | Rolphton, Ontario | Marine Construction Commercial Diving |
| Consulting, plural-component pump operations for APE epoxy encapsulations | Grand Turk Island, Turks and Caicos | Marine Construction Commercial Diving |
| Installation of anodes protecting natural gas main under the Providence River | Providence, RI | Marine Construction Commercial Diving |
| Installation of epoxy encapsulation jackets and design/build of impressed-current cathodic protection (ICCP) | Claymont, DE | Marine Construction Commercial Diving |
| Installation of Helix anchors in support of marina installation | New London, CT | Marine Construction Commercial Diving |
| Installation of aluminum barges installed on moving guides to facilitate installation of river walk | Salem, MA | Commercial Diving |
