At Ven-Tech Subsea, we provide world-class survey services designed to support critical decisions in marine infrastructure, energy, environmental compliance, and underwater asset management. Whether you’re planning a major construction project, inspecting submerged pipelines, or monitoring coastal changes, our survey division delivers accurate, actionable, and high-resolution data—fast.
We deploy some of the most advanced oceanographic, geophysical, and hydrographic instrumentation available—fully operated by certified marine technicians, backed by CSA/ADCI-compliant commercial diving and robotic support teams.
At Ven-Tech Subsea, we deliver a full suite of advanced hydrographic and geophysical survey services designed to support infrastructure development, environmental compliance, and asset integrity across marine, freshwater, and coastal environments. Our capabilities are backed by cutting-edge technology, CSA-certified procedures, and a team of experienced marine survey professionals.
Our Survey Services Include:
Bathymetric Mapping (Single & Multibeam): High-resolution depth data for navigation, dredging, and construction planning.
Geophysical Surveys: Utilizing side scan sonar, sub-bottom profilers, and magnetometers to map subsurface features, identify sediment layers, and detect buried hazards.
Geotechnical Sampling: Collection and analysis of seabed materials using vibrocorers, cone penetration testing (CPT), and grab samplers to inform engineering design.
Pipeline & Cable Route Surveys: Accurate seabed profiling to support the planning, installation, and maintenance of submarine pipelines and telecommunication cables.
UXO Detection & Debris Mapping: Identification and classification of unexploded ordnance (UXO), anchor debris, and subsea hazards.
Environmental Baseline Studies: Comprehensive surveys to assess water and sediment quality, biological habitats, and anthropogenic impacts.
Port, Harbor & Dredging Surveys: Real-time surveys to support dredging operations, berth maintenance, and navigational safety.
Asset Inspection & Condition Assessment: Visual and sonar-based inspections of submerged infrastructure, including bridges, intakes, caissons, and marine terminals.
MetOcean & Tidal Monitoring: Deployment of sensors and data loggers to capture tidal variations, wave energy, and oceanographic parameters.
ROV-Integrated Survey Solutions: Combining high-definition remotely operated vehicles with advanced sensors for complex survey missions in hard-to-reach or high-risk areas.
All survey services are fully customizable and can be delivered as standalone operations or as part of larger inspection, engineering, or remediation projects.
🔗 Contact us today to learn how our survey technologies can support your next project.
Hydrographical Survey Services involve the precise measurement and mapping of underwater topography, water depth, and seabed features to support safe navigation, infrastructure planning, and marine construction.
Geophysical Survey Services involve the use of advanced sonar and sensor technologies to detect, map, and analyze subsurface conditions, sediment layers, and buried objects for engineering, environmental, and construction applications.
Geotechnical Survey Services involve the sampling and analysis of seabed and subsurface materials using tools like vibrocorers, CPT, and grab samplers to assess soil strength, composition, and stability for engineering and marine infrastructure design.
High-Resolution Bathymetric & 3D Surveys using ROVs, USVs, and multibeam sonar systems to deliver ultra-accurate depth, topographic, and volume data for coastal, inland, and subsea environments.
Geophysical Surveys leveraging side scan sonar, sub-bottom profilers, and magnetometers mounted on ROVs and USVs to detect buried pipelines, UXO, structural debris, and sediment layers with minimal surface disruption.
Geotechnical Surveying with vibrocorers, CPT units, and robotic samplers deployed via custom ROV and crawler platforms to analyze soil composition, strength, and bearing capacity for engineering and environmental design.
Pipe Survey Solutions using advanced tracked pipe crawlers equipped with 4K cameras, sonar, and NASSCO-certified reporting tools to inspect and map the internal condition of submerged and buried pipelines.
Our jet boats, pontoons, and modular barges serve as stable platforms for deploying survey equipment in lakes, rivers, coastal zones, and offshore environments, enabling efficient data collection and crew operations.
Equipped with high-resolution sonar, cameras, and geotechnical tooling, our ROVs and tracked pipe crawlers perform inspections, mapping, and sampling in confined, submerged, or hazardous environments with precision and safety.
Ideal for remote or shallow locations, our ASVs operate autonomously or via remote control, conducting bathymetric, geophysical, and environmental surveys without the need for manned vessels.
Compact and portable, these systems are perfect for side scan sonar, sub-bottom profiling, and magnetometer surveys in areas where diver assistance or small-scale deployment is preferred.
Choosing us means working with a partner that’s more than a contractor—we’re your marine data ally. Here’s what sets us apart:
— Access to elite survey equipment (without capital cost)
— CSA/ADCI-certified commercial diving & ROV support
— Fast mobilization across Canada & the U.S.
— Data integrity through strict QA/QC workflows
— Multi-industry expertise: energy, utilities, infrastructure, and ports
— BCCSA COR Certified | ISNetworld | Avetta | Cognibox
✔ Municipal & Public Utilities
We assist municipalities, regional districts, and water authorities with potable water reservoir inspections, sewer and stormwater mapping, and asset condition assessments—fully compliant with AWWA, NFPA 25, and CSA standards.
✔ Oil & Gas
Our team supports upstream, midstream, and downstream operations with subsea pipeline surveys, outfall inspections, IMR programs, and offshore infrastructure mapping, aligned with API and industry HSE protocols.
✔ Marine Construction & Engineering
From pre-construction geophysical and geotechnical surveys to as-built documentation and UXO clearance, we serve marine contractors, engineers, and EPCs with actionable data and real-time visuals.
✔ Environmental & Regulatory Agencies
We provide baseline environmental studies, tidal monitoring, and sediment sampling to support habitat protection, permitting, and ongoing compliance with regulatory frameworks.
✔ Ports, Harbors & Dredging Authorities
Our bathymetric mapping, debris detection, and structural inspections help port authorities and dredging contractors manage safe navigation, capital projects, and maintenance cycles.
✔ Mining, Pulp & Paper, and Heavy Industry
We support industrial clients with underwater inspections of intakes, outfalls, raw water systems, and emergency response scenarios, tailored for remote or restricted-access sites.
✔ Indigenous & Remote Communities
We offer cost-effective ROV and diver-based solutions for water infrastructure, intake cleaning, and leak detection in challenging or logistically isolated regions.
