MARINE TECH SURVEY LLC is a registered limited liability company based in Epping, New Hampshire, US. We specialize in professional marine surveying for commercial marine developers, offshore wind firms, port authorities, coastal construction contractors, and environmental research organizations across the United States East Coast. Our fleet-equipped survey vessels carry industry-grade multibeam sonar, sub-bottom profilers, underwater ROV inspection systems, and GNSS geospatial mapping hardware. All survey data reports comply with NOAA, USACE, and international hydrographic standards, with full secure data handling aligned with US privacy and data security regulations.
Years Marine Survey Experience
Completed Coastal & Offshore Projects
Long-Term Federal & Private Clients
MARINE TECH SURVEY LLC is a fully registered United States limited liability company, with our primary administrative office located at 19 Grassy Ln, Epping, NH 03042. Our operational survey fleet docks at major coastal ports across New England for rapid mobilization to any project site along the Atlantic seaboard.
Our core business divisions cover four primary verticals: hydrographic bathymetric mapping for port expansion and dredging, geophysical sub-bottom marine soil sampling for coastal construction, ROV underwater hull and subsea infrastructure inspection, and long-term environmental marine monitoring for offshore wind lease zones. Our in-house team consists of certified hydrographers, USCG-licensed vessel captains, geophysicists, GIS mapping specialists, and marine environmental analysts with NOAA-accredited survey credentials.
We provide complimentary pre-project site consultations, deliver fully georeferenced 3D survey datasets, and offer fixed-term annual monitoring retainer agreements for long-term coastal asset owners. All project deliverables are formatted to meet federal USACE and NOAA submission standards, with secure encrypted cloud data storage compliant with US commercial data protection standards.
All final charts accepted for federal permit filings
Client geospatial data protected under US industry standards
Rapid vessel deployment to all New England coastal sites
Scheduled quarterly/annual seabed stability surveys
Custom survey packages tailored for port authorities, offshore energy developers, coastal civil contractors, environmental agencies, and marine research institutions across the US Atlantic coast
High-resolution seabed depth mapping using multibeam echosounder sonar systems, generating fully georeferenced 3D bathymetry charts for dredging, port expansion, navigation channel clearance, and coastal development permitting.
Sub-bottom profiler geophysical surveys to map subsurface sediment layers, identify bedrock depth, detect buried debris, pipelines, and geological hazards ahead of coastal foundation construction or offshore wind turbine installation.
Remotely Operated Vehicle underwater visual inspection of vessel hulls, seawalls, breakwaters, subsea pipelines, wind turbine foundations, and submerged debris with high-definition video recording and damage mapping reports.
Full baseline pre-construction marine environmental and geophysical surveys for offshore wind lease blocks, plus annual post-installation monitoring to track seabed shift, scour, and marine habitat impact per BOEM regulatory requirements.
Marine sediment core sampling from survey vessels for laboratory geotechnical testing, measuring soil bearing capacity, shear strength, and consolidation properties for seawall, pier, and wind foundation structural design.
Fixed-price annual survey retainer packages for port authorities, offshore wind operators, and coastal landowners requiring scheduled quarterly or yearly seabed stability, scour, and environmental monitoring without repeat full proposal overhead.
Multibeam bathymetry + basic sub-bottom profiling for small marina dock dredging permits
Bathymetry + geophysical profiling + geotechnical core sampling for pier foundation design
Complete BOEM-compliant geophysical & environmental baseline mapping for wind lease blocks
Scheduled quarterly seabed stability surveys with comparative change analysis reports
We conducted full multibeam bathymetric mapping of a Maine commercial harbor, delivered NOAA-compliant pre-dredge depth charts, performed follow-up post-dredge volume comparison surveys, and packaged all geospatial datasets for the client’s USACE dredging permit filing, calculating exact sediment removal volumes for project cost validation.
Our survey vessel deployed multibeam sonar and sub-bottom profiler equipment across a 12-square-mile offshore wind lease zone off Massachusetts, mapping sediment stratigraphy, buried pipeline hazards, and seabed bathymetry. All deliverables were formatted to meet BOEM environmental baseline reporting rules for the client’s lease development application.
We collected continuous marine sediment core samples along a New Hampshire coastal seawall alignment for geotechnical bearing testing, then deployed our ROV system to conduct full underwater visual inspection of the seawall’s submerged face, geotagging all erosion and structural damage points and delivering a combined engineering report to the municipal coastal infrastructure department.
Submit your project details including survey type, coastal location, and scope requirements to receive a complimentary technical consultation and fixed-price project proposal from our licensed marine survey team
19 Grassy Ln
Epping, NH, United States
ZIP Code: 03042
9534185630
info@marine-tech.bond
MARINE TECH SURVEY LLC