Hydrographic bathymetric and geophysical surveys

Operating under ISO 9001:2008 accreditations, Mer-Terre specialize in the execution of a wide verity of marine survey. Our survey projects performed by highly experienced surveyors with designated survey vessels for any need and in accordance to intranational QA/QC Plans.

Bathymetric Survey

Hydrographic Survey

Diving Services

Full Range ROV

ROV services
GEOPHYSICAL GEOTECHNICAL SURVEY
HYDROGRAPHIC SURVEYS
BATHYMETRY SURVEY
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Bathymetric Survey

MBES

Kongsberg EM 3002D (Dual ead)
R2Sonic 2024

SBES

Kongsberg EA 400P
Reson Navisound 500
Reson Navisound 215
Ohmex Sonarmite (integrated heave)

Motion

Hypack Max 2014
CARIS Hips & Sips
PDS 2000
AutoCAD
Global Mapper
EDT Geodetic Convertor

Software​

Vega WL61 Tide Keler GSM2

Tide

Seatex MRU H
SMC IMU 108

Positioning

Trimble SPS 461 RTK/Heading
Trimble SPS551/H HP-XP/Heading
Novatel ProPack 6 RTK/ Heading
Ashtech ProFlex 500 Geodetic RTK
Crescent V100 Series GPS Compass
Trimble Ag332 dGPS
Trimble GeoXT 3000 Mobile GPS
Geomax Zoom 30 Total Station

Hydrographic Survey

  • Model 110 Water Sampler (Standard)
  • Keller Level Pressure Transmitters
  • Multi-Water Sampler (Rosette)
  • VEGAPULS WL61 Radar Sensor
  • WAVECOM GSM/GPRS/EDGE
  • OBS 500 Turbidity Sensor
  • CR1000 Data Logger
  • OSIL Data Buoys
  • SBE 37-SI CTD
  • YSI 6600 V2 Sonde
  • YSI Chlorophyll Sensor
  • YSI 6136 Turbidity Sensor
  • YSI 6820 and 6920 V2 Sondes
  • YSI Optical Dissolved Oxygen Sensor
  • KELLER – GSM-2 Remote Tide Gauge System
  • 2100Q and 2100Q IS Portable Turbidimeter
  • Benthos Trolling nets
  • Sedimentation Traps
  • S4 Current Meters

Diving Services

Surface Air Supplied Diving System 1

HYDRA 20 foot Dive Control Van

  • HYDRA twin lock decompression chamber
  • Lights, comms, O2 bibs, O2 analyzing, back-up power etc’
  • HYDRA Dive control panel for (3) three divers
  • Independent air source and gas analyzing point
  • 3 Amcom 3 diver coms box
  • LG Full sound and video recording system of all divers

Diver Gear

  • (3) KRONGSBERG Camera and light Systems, helmet and band masks
    mounted.
  • STS UK 3 x 150 meter divers umbilical’s twisted type
  • KM57 2 helmets kmb 57
  • KM DSI 18 1 band mask dsi 18
  • Arvest Bail out cylinders and harness x 3
  • STANLEY Hydraulic tools and Broco
  • THOR 1600g Dry Suit

LARS & Deck Gear

  • 3 Diver deployment system basket (LARS)
  • Deck camera and monitor
  • Large stock of spare parts and various items
  • Work bench area with tools

Air Supply

  • HYDRA Air quad for diving and chamber
  • Use 6 x 50 lts for chamber and 6 x 50 ltr for diving
  • HYDRA 20-foot container with:
    2x HP compressors
    1x LP compressor w/air receiver

Surface Air Supplied Diving System 2

HYDRA 20 foot Dive Control Van

  • HYDRA Twin lock decompression chamber 52inch
  • Lights, comms, O2 bibs, O2 analyzing, back-up power
  • HYDRA Dive control panel for (3) three divers
  • Independent air source, on line analyzing.
  • AMCOM 3 – 3 diver coms box
  • LG HARD DRIVE – Full sound and video recording system of all divers

Diver Gear

  • KRONGSBERG (3) Camera and light Systems, helmet and band mask mounted.
  • STS UK 3 x 150 meter divers umbilical’s twisted type
  • KM57 2 helmets Kirby Morgan 57
  • KM DSI 181 band mask Kirby Morgan DSI 18
  • Arvest / scubapro Bail out cylinders and bell harnesses’ 10 L ylinders or as required
  • Hydraulic tools and Broco cutting and welding equipment

LARS & Deck Gear

  • TITAN LARS Diver deployment system basket (LARS)
  • Deck camera and monitor
  • Large stock of spare parts and various items
  • Work bench area with tools.

Air Supply

  • HYDRA LYNDE Air quads for diving and chamber
  • Use 6 x 50 L for chamber and 6 x 50 L for diving additional air and oxygen quads
  • HYDRA 20-foot container with:
    2x HP compressors (Bauer)
    1xLP compressor (Quincy) with air receiver

Full Range ROV

Owned ROV Tooling and Accessories

– Conan & Atlas schilling manipulators
– Hydrolek Camera booms
– Subsea telemetry and survey expansion
– Kongsberg MS1000 HD Sonar system
– HD Video Cameras
– VisualSoft Data Acquisition and video management
– CP Probes, Flooded Member Detection Probes
– TSS 440 pipe/Cable detection
– Sea-Squirt high pressure intervention pump
– Torque Tools
– Various seabed sampling and water sampling

SDM Quasar

3,000m rated 150hp Work Class ROV with full ROV DP system, 2 X 7func manipulators, HD camera, Survey expansion sub-sea telemetry with available serial ports and Ethernet for client equipment and survey dedicated fiber.
The system has a top hat TMS with 4,000m umbilical and 400m tether in the TMS spool.

Remora II

6,000m rated 25hp Survey/light work class ROV 2 X 7func manipulators, HD camera, Survey expansion sub-sea telemetry, free swimming with 6,000m umbilical on the winch.

Seaeye Falcon

300m rated inspection class ROV, with HD Camera, Single function Manipulator, 5 func. HydroLek manipulator skid and special fabricated tooling and sampling baskets.
400m tether on winch for free swimming operations.

Sub Atlantic Navajo

300m rated inspection class ROV, with HD Camera, Single function Manipulator, Laser scaler. 400m tether on winch for free swimming operations.

Video Ray

150m rated PRO GTO version Observation class ROV
with upgraded motor power and single function grabber