C-TRACK · Marine and subsea

Surface to subsea.

Survey, positioning and ROV inspection for offshore energy, ports and marine construction.

Right the first time.

Calibrated kit, checked on board, every shift. No rework. No second campaign.

One team. One datum.

From the deepwater route to the beach landing, every dataset ties to the same reference.

Every inch, measured.

High resolution sonar maps the seabed and the cable in one sweep.

Eyes on every metre.

ROV inspection for pipelines, cables and subsea structures.

Below the seabed.

Sub-bottom profiling and geotechnical sampling characterise the ground before you build on it.

See what's down there.

Survey data your engineers can build on, delivered on time, in the formats they already use.

Plan your survey Our services

C-TRACK · Marine and subsea

Surface to subsea.

Survey, positioning and ROV inspection for offshore energy, ports and marine construction. Right the first time.

Plan your survey

Built to the specs your client already writes into the contract.

  • IHO S-44
  • IMCA M 200 / M 252
  • ASPRS LiDAR
  • ISO 9001, 14001, 45001 aligned
  • BOSIET / HUET crews
  • Owned survey fleet

(01) Services

Everything between the waterline and the bedrock.

Seven disciplines. One crew list. One set of deliverables.

  1. 01Hydrographic and bathymetric survey
  2. 02Marine geophysics
  3. 03Positioning and construction support
  4. 04ROV and subsea inspection
  5. 05Marine geotechnical investigation and vibrocoring
  6. 06LiDAR, drone and land survey
  7. 07Utility mapping
Plan your survey
Visualisation of a multibeam sonar swath mapping a subsea power cable, soundings coloured by depth

01

Hydrographic and bathymetric survey

Multibeam and single-beam bathymetry for ports, channels, dredging and offshore sites, reduced to the datum you specify.

Interpreted sub-bottom profile showing seafloor, sand and clay units and a reflector

02

Marine geophysics

Side-scan sonar and sub-bottom profiling with sparker and boomer, so you know what is under the seabed before you design on it.

C-TRACK surveyor on deck beside an offshore substation platform at dusk

03

Positioning and construction support

Vessel positioning and subsea navigation using Precise Point Positioning (PPP) for pipelay, cable lay and offshore installation.

C-TRACK work-class ROV tracking a subsea power cable along a multibeam swath

04

ROV and subsea inspection

ROV surveys of pipelines, cables and subsea structures, with video and sonar data in one report.

C-TRACK vibrocorer rigged on a survey vessel deck in port

05

Marine geotechnical investigation and vibrocoring

Seabed samples from vessels and jack-ups, lab tested and tied into the geophysical results.

C-TRACK surveyor using a GNSS field controller at sunset

06

LiDAR, drone and land survey

Vehicle and drone LiDAR, photogrammetry and topographic survey for beaches, landfalls and onshore sites.

Ground-penetrating radar section showing buried utility reflections by depth and distance

07

Utility mapping

Ground-penetrating radar and land geophysics to find buried services before you dig.

(02) Industries

Wherever the water meets the work.

The same crews and the same standards, from wind farm export cables to harbour berths.

C-TRACK crew member on deck looking out at an offshore wind farm

01

Offshore wind

Site investigation, cable route survey, installation support and as-built checks for export and array cables.

C-TRACK surveyor watching a construction vessel beside an offshore platform at sunset

02

Offshore oil and gas

Pipeline route surveys, construction positioning and integrity inspection.

Multibeam point cloud of a subsea pipeline on the seabed

03

Pipelines and cables

Route, pre-lay, as-laid and as-built surveys along the whole corridor.

3D point cloud scan of breakwater armour units

04

Ports and harbours

Berth pocket and channel surveys, and 3D scans of quay walls, breakwaters and jetties.

Colour-coded bathymetric surface of a dredged basin

05

Dredging

Pre- and post-dredge surveys with volume calculations, turned around fast.

Jack-up barge working in shallow water

06

Utilities and marine construction

Outfalls, intakes, landfalls and buried-service mapping for civil contractors.

(03) The data

Hold to run a multibeam sweep.

Every colour is a measured depth. Blue is deep, orange is shallow.

Colour bathymetry of a surveyed seabed basin, deep areas in blue rising to shallow areas in orange, with contour lines
Grid 10 cm to 1 m IHO S-44 Order 1 XYZ · DTM · AutoCAD · GIS

Press and hold the button, or hold Space or Enter. Let go early and the sweep eases back. Press again when it finishes to run it once more.

(04) Landfalls

The surf zone is where data usually breaks. Ours doesn't.

Boats survey at high tide. LiDAR drives and flies at low tide. Every platform runs RTK to the same base station, so you get one continuous surface from the deepwater approach to the landing point.

MULTIBEAM SINGLE-BEAM VEHICLE LIDAR DRONE LIDAR HIGH TIDE LOW TIDE VESSEL · MBES BOAT · SBES 4×4 · LIDAR UAV · LIDAR

Multibeam echosounder

Nearshore to about 3 m depth. Full seabed coverage.

Single-beam echosounder

Very shallow and surf-affected water, down to 0.5 m.

Vehicle LiDAR

Intertidal flats, beach and dunes at low tide.

Drone LiDAR

Soft sediment, mangrove and closed-off landings.

Typical 1-sigma accuracy in good conditions, confirmed by calibration and check lines on every job.

(05) Method

Four steps. No surprises.

  1. C-TRACK surveyor setting up a survey instrument on a vessel deck at sunrise

    Plan

    We write the survey plan and method statement against your spec, and agree the datum before anyone sails.

  2. C-TRACK crew deploying a pole-mounted multibeam echosounder at night

    Mobilise

    Our own calibrated equipment, and crews inducted to your HSE rules. Offshore crews hold BOSIET and HUET.

  3. C-TRACK surveyor processing bathymetry in a vessel survey room

    Acquire

    Data is checked on board as it comes in, and you get a progress report every day.

  4. Point cloud of concrete armour units from a 3D underwater scan

    Deliver

    Processed data, charts and reports in your formats, with the calibration and QC records attached.

Our crews, on site.

Based in Navi Mumbai and Dubai. Working across the Middle East, South and Southeast Asia, and Africa.

(06) Hire survey boat

Meet C-ATLAS.

Our purpose-built survey vessel for coastal and nearshore hydrographic, geophysical and geotechnical work. Available to hire for your project.

C-ATLAS, the C-TRACK survey boat, cruising through calm sea under a storm sky with sunbeams breaking through
C-ATLAS from starboard: blue cabin with the C-TRACK logo under the grab rail, dark hull with her name on the bow C-ATLAS from above the starboard bow: foredeck rails, lifebuoys, solar panels on the cabin roof and her name on the bow C-ATLAS from the starboard quarter: open aft deck with the deployment davit, liferaft and air conditioning units C-ATLAS from astern: her name on the transom, twin propellers below
  • 14.9mLength overall
  • 4.5mBeam
  • 0.7mDraft
  • 17knMax speed
  • 2 × 325HPDiesel inboard
  • IRSClassed, HDPE hull

01

800 × 800 mm moonpool

Multibeam, singlebeam and sub-bottom profilers go down through the hull, sheltered from the sea state.

02

Survey control room

An indoor survey desk with four 21-inch HD monitors for acquisition, navigation and QC, plus a dedicated IT rack for the electronics.

03

500 kg deployment davit

Controlled launch and recovery of survey sensors, sound velocity profilers and sampling gear.

04

Quiet power on station

A 10 kW Mitsubishi marine generator and 550 W of solar run the survey electronics independently of the main engines.

05

Stable HDPE hull

A 4.5 m beam on a 14.9 m hull gives a wide working deck and low motion, which keeps MBES and SBP data clean.

06

Navigation suite

Chart plotter, AIS Class B and VHF radio for safe transits, vessel tracking and station keeping.

07

Crew on board

Bunk beds for four crew, seating for 8 to 10, a pantry, and a toilet with shower for longer campaigns.

08

Safety kit

A 12-person liferaft, lifebuoys, a fire station on deck and AIS Class B tracking.

Optional

Supplied survey-ready.

C-ATLAS can come pre-calibrated and fully loaded with a hydrographic survey spread, ready to mobilise. Other sensors are integrated on request.

  • Multibeam echosounder (MBES)
  • Sub-bottom profiler (SBP)
  • Magnetometer
  • RTK DGNSS
  • Heading sensor
  • Survey computer and software
  • Sound velocity profiler (SVP)
  • UHF radio telemetry
Ask about availability

(07) FAQ

Straight answers.

Do you own your equipment?

Yes. Our survey equipment is owned, calibrated and ready to ship. The kit that arrives on your vessel is the kit we tested.

How fast can you mobilise?

It depends on location and scope, but owned equipment and an experienced crew pool let us move at the pace EPCIC projects need. Tell us your window and we will give you a straight answer.

Which standards do you work to?

IHO S-44 for hydrography, IMCA M 200 and M 252 for marine survey, and ASPRS and USGS specs for LiDAR. Our management system is aligned to ISO 9001, 14001 and 45001.

Can one company cover offshore, the surf zone and the beach?

Yes. That is the job we are built for. Boat, vehicle and drone platforms all tie to the same RTK base, so your corridor arrives as one dataset, not four.

What formats will we get?

XYZ and DTM grids, LAS and LAZ point clouds, orthomosaics, AutoCAD and GIS charts, alignment sheets and KP profiles, plus the factual and interpretive report.

Are your offshore crews certified?

Yes. Offshore personnel hold BOSIET and HUET where the job needs it, and every crew is inducted to your HSE requirements.

(08) Plan your survey

Tell us about your site.

Send us the location, the scope and your dates. We will come back with a method and a price.

Goes straight to survey@ctracksurveys.com.

Thank you. Your enquiry is with the C-TRACK team at survey@ctracksurveys.com, and we will reply to the email address you gave.

The C-TRACK ROV following a sonar swath along a subsea power cable ROV inspection · subsea cable