Hydrographic Surveys

Subsea services

We deliver precise hydrographic surveys meeting the highest international standards, utilizing advanced sonar systems, precision positioning, and tidal correction technologies. Our high-resolution bathymetric datasets provide the foundation for planning, designing, and executing offshore and coastal infrastructure projects with complete reliability.

From Survey to Seabed Intelligence

We deliver hydrographic survey and marine mapping services at a standard normally reserved for national charting agencies, combining decades of field experience with a rigorously engineered acquisition and QC workflow. Every project is planned, calibrated, and verified by senior hydrographers who have delivered critical surveys for ports, navigation channels, offshore energy fields, and coastal infrastructure in some of the most challenging marine environments on earth.

From rapid mobilisation to final delivery, our workflow is built around quality and speed: systematic sensor calibration and verification, real‑time and post‑processed QC, and chart‑ready products packaged to slot directly into your ENC/port charting, engineering, and dredge management systems. The result is validated, defensible hydrographic data and interpreted seabed models delivered in days rather than weeks — giving your pilots, engineers, and marine operations teams the below‑waterline “ground truth” they need to operate safely and confidently

How We Survey the Seabed: Precision Below the Waterline

Multibeam Echo Sounders MBES

Full-swath bathymetric mapping using hull-mounted and pole-mounted multibeam systems operating from 100 kHz
to 700+ kHz — achieving centimeter-level depth accuracy with 100% seabed coverage in a single vessel pass.
MBES simultaneously captures co-registered bathymetry and backscatter data, delivering both depth models and
seabed classification from one sensor deployment. Ideal for port basins, navigation channels, offshore
development zones.

Topobathymetric LiDAR

Airborne laser systems emitting dual-wavelength (green 532 nm / NIR 1064 nm) pulses that penetrate water to
map both terrestrial topography and shallow-water bathymetry in a single seamless dataset. Capable of
mapping up to 15 m below the water surface at 200+ points per square meter with ±2 cm vertical accuracy —
filling the critical “land-to-sea gap” where vessel-based sonar cannot safely operate and terrestrial LiDAR
cannot reach.

Autonomous Underwater Vehicles

Untethered, pre-programmed robotic platforms equipped with multibeam, side-scan, sub-bottom, camera, and
environmental sensors — operating at depths from 10 m to 6,000+ m without surface vessel tethering
constraints. AUVs deliver higher-resolution data than hull-mounted systems by flying closer to the seabed,
achieving centimeter-scale resolution for detailed inspection, pipeline survey, and deep-water mapping
missions.

Hybrid Marine Workflows

Our most complex offshore projects combine all platforms into a single georeferenced marine dataset.
Multibeam provides full-coverage bathymetry, side-scan adds object detection and habitat classification,
sub-bottom reveals shallow geology, topobathymetric LiDAR bridges the nearshore gap, and AUVs deliver
close-range inspection detail — all registered into one seamless, IHO-compliant survey-controlled marine
model.

What We Deliver: Actionable Seabed Intelligence

High-Resolution Bathymetric Models

IHO S-44 compliant multibeam and single-beam bathymetry with full water-column and sound velocity
corrections, delivering centimeter-to-decimeter accuracy depth models suitable for engineering design,
dredge control, and nautical charting.

Sub-Seabed Geological Profiles

Interpreted sub-bottom profiler data mapping sediment thickness, shallow stratigraphy, buried features, and
rock-head depth — integrated with borehole data where available to build comprehensive geological ground
models for the marine environment.

3D Hydrodynamic-Ready Models

Bathymetric, shoreline, and structure data formatted for direct ingestion into 2D/3D hydrodynamic, sediment
transport, and coastal process modeling packages — shortening the path from survey data to engineering
analysis and scenario simulation.

GIS & Digital Twin-Ready Marine Data

All outputs delivered fully georeferenced and packaged for direct ingestion into GIS, BIM, and digital twin
environments — enabling seamless integration with onshore survey, utility, infrastructure, and asset
management platforms.

Industries We Serve

Oil, Gas & Renewables

Ports & Harbours

Coastal Engineering & Climate Resilience

Dredging & Marine Construction

Marine Infrastructure

Bridge Pier Scour Assessment | Causeway Alignment Surveys | Submerged Asset Inspection | Intake/Outfall Mapping | Quay Wall Condition Assessment

Water Resources & Inland Hydraulics

Reservoir & Dam Surveys | River Cross-Sections | Floodplain Bathymetry | Sedimentation Studies | Hydrodynamic Model Inputs

Marine Mining

Seabed Mineral Exploration | Deep‑Ocean Resource Mapping | AUV Survey | Multiphysics Targeting | Environmental Baseline

Environmental Management

Defence & Security

Seabed Clearance | UXO Pre-Characterization | Submerged Obstruction Detection | Underwater Infrastructure Mapping | Risk & Vulnerability Assessment

Our Methodology: Precision at Every Stage

A proven four-stage process ensuring accuracy, compliance, and actionable insights

Plan with Intelligence

Before mobilizing, we begin with a data-driven understanding of your asset environment. We perform a comprehensive site intelligence review — analyzing existing drawings, access limitations, hazardous zones, operational constraints, and required accuracy levels.

Precision Field Acquisition with real time QC

Our field teams deploy fully calibrated instruments in strict accordance with manufacturer specifications and project QA protocols. Intelligent workflows deliver real-time on-site feedback on coverage, registration integrity, and data quality

AI-Driven Data Processing & Extraction

Curates raw data, Guides AI, Validates Output into actionable digital intelligence through a hybrid pipeline of advanced algorithms, machine learning models, and expert review.

Decision-Ready Deliverables

Outputs are not merely models but enterprise-ready information assets. All datasets undergo independent quality assurance audits. We ensure your organization can immediately operationalize the data for planning, maintenance, and strategic decision-making.

Case Studies

We're building a greener tomorrow. Our solutions optimize operations, cut waste, and lower emissions, supporting net-zero goals.

Subsea services

Subsea Geophysical Services

Advanced nearshore pipeline mapping using integrated geophysical technologies to determine precise burial status and mitigate environmental risks. Our comprehensive survey delivers the critical data needed…

200m

Survey Corridor Width

100%

Data Compliance

Zero

Environmental Incidents

Subsea services

Precision Positioning & Metrology

Millimeter-accurate jacket positioning using robotic total stations and high-precision leveling to ensure perfect fit-up between new and existing structures. Our exacting survey methodology delivered flawless…

±2mm

Positioning Accurac

100%

Fit-Up Accuracy

Zero

Safety Incidents

Why Organizations Choose Our Hydrographic Survey Services

Technical Excellence

Industry-leading accuracy specifications (±1–2 mm TLS, ±2–5 cm aerial) backed by systematic, documented QA/QC processes ensuring reliable, repeatable results across diverse project types — from offshore platforms in extreme marine environments to sensitive heritage interiors.

Operational Efficiency

Multi-platform deployment and AI-accelerated processing compress project timelines by up to 70%. What once required months of manual survey and CAD drafting now delivers registered, classified point clouds and intelligent models in days to weeks.

Integrated Solutions

Complete service delivery from project planning and field acquisition through processing, modeling, and specialized analysis — all under one roof. No fragmented vendor chains, no data conversion losses, no accountability gaps.

Industry Expertise

25+ years of specialized knowledge across regulated, high-stakes environments. We don’t just capture geometry — we understand what it means for your operations, your compliance obligations, and your capital planning decisions.

Proven ROI

Our clients consistently document measurable returns: 30–50% reduction in field rework, 20–40% faster project delivery, elimination of fabrication mismatches, and extended asset service life through predictive condition monitoring. Reality capture isn’t an expense — it’s a multiplier on every downstream decision.

The Subsea Intelligence Advantage

At the intersection of marine survey rigour and advanced digital workflows, we transform raw acoustic and optical signals into validated, fully integrated subsea models that engineering, dredging, and operations teams can interrogate, trust, and act on from day one.