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The AQUAlogger® 310TY is a compact instrument that measures turbidity to 10,000FTU (typical), with optional integral temperature and pressure sensors. It can be used in freshwater and ocean environments, with models for shallow and deep water. The logger ... Morealso features a tool to convert turbidity to suspended sediment concentration using in situ samples.
The AQUAscat® 1000R represents a new generation of high frequency acoustic instrumentation. It has applications in sediment transport studies, including measurement of suspended sediment profiles, precision altimetry, dredge plumes and turbulence.... More

The AQUAscat transmits pulses of high frequency sound on up to four transducers, each of which may operate at a different frequency. It measures the sound scattered by sediment or other suspended materials at discrete spatial intervals programmable from 2½ millimetres to 4 centimetres. For altimetry, this may span a few tens of centimetres; for monitoring sediment suspension profiles, a total range of around 1-2 metres is typical; while dredge plume estimation may extend to 10 metres. The instrument is supplied in a subsea housing suitable for long-term unattended deployments. Batteries for various deployment schedules are available to order.
H2Omni-X USV is the first commercially-ready unmanned survey vessel (USV) from H2O-Robotics. H20mni-X has already been delivered dozens of times to worldwide partners and clients, giving them versatility and the latest technology in a single vehicle.... More

H2Omni-X is an autonomous unmanned surface platform specialised for seafloor and surface surveying, mapping and inspection.

Thanks to innovative technology and state-of-the-art equipment, it can also serve as a support vehicle for autonomous underwater vehicles (AUVs) or divers by providing two-way communication, tracking and monitoring of equipment and personnel. Due to its modular and clever design, it can easily be operated by a single person, ensuring logistics and deployment are simpler than with any other similar vehicle!

By using different sensors on board or configuration options, the platform can be modified for a new mission in under an hour!
The Teledyne SeaBotix LBV300-5 remotely operated vehicle (ROV) is the ultimate in underwater inspection versatility for a wide range of applications including maritime security, aquaculture, port and harbor inspection, infrastructure inspection, and ... Moremore. The system features dual vertical thrusters, increased stability and an optional Crawler Skid.​
A.P. van den Berg's DW ROSON 100 is a proven seabed CPT system, deployed from a vessel with an A-frame or crane through a moonpool or over the side. The electrical wheel-drive system pushes the pre-assembled CPT string into the seabed. Wheel friction ... Moreis imposed by hydraulic force. A self-tensioning electric winch with heave compensation feeds the umbilical for power supply and data communication.

Key Features

Proven wheel-drive system with a pushing force of 100kN

Option for second set of wheels to achieve 200kN

Deployable from medium to large vessel

4,000m water depth rating, CPT depth up to 50m

Provided with technology to operate at high water pressures

Suitable for 10cm² Icone + click-on modules + Seabed Sampler XL
Ocean Module's revolutionary V8 Sii (Search, Identification and Intervention) Mini Observation ROV is the latest edition to the AUS-ROV remotely-operated vehicle arsenal. With an eight T110 vectored thruster arrangement and extremely advanced control ... Moresystem, the V8 Sii ROV allows its Pilot to fly with 360° freedom of movement in six dimensions. Any desired angle and position can be held indefinitely, at any depth, as required.

The Pilot Control Unit (PCU) provides all the controls an ROV Pilot needs to handle the V8 Sii ROV in one simple handheld unit. These include speed, direction, depth, pitch, roll, trim, light intensity, camera pan and tilt, and autopilot.

The Surface Unit (SU) provides the power required to operate the V8 Sii ROV. For added safety it includes constant insulation monitoring with a warning LED as well as automatic cut-out. It also has an interface for all the inputs and outputs, such as telemetry, video, sonar, Ethernet, USB and RS-232.

Ocean Modules provides a variety of cables for use with the V8 Sii ROV. The standard cable is a 12mm neutral buoyancy cable housing power conductors and three twisted pairs for control, video, sonar and other sensors. It is available for lengths of up to 500m and can withstand strain of up to 500kg. A fibre optic option is also available for HD video, longer tethers and higher bandwidth requirements.
Robertson Geo's PS Logger Probe is a low-frequency acoustic sonde designed to measure compressional (P) and shear-wave (S) velocities in soils and soft rock formations. It operates using indirect excitation rather than mode conversion as in a conventional ... Moresonic. It is capable of acquiring high resolution P and S wave data in borehole depths of up to 600m in water.

The PS Logger probe contains a unique design of powerful hammer source and two receivers, separated by acoustic damping tubes. To acquire data, the probe is stopped at the required depth and the source is fired under surface command. Firing causes a solenoid-operated shuttle aligned across the borehole axis to strike plates on opposite sides of the probe in turn, setting up a pressure doublet in the surrounding fluid. The resultant fluid motion produces a tube wave at the borehole wall with velocity close to the shear velocity of the formation together with a compressional wave.

As the waves propagate parallel to the borehole axis, they set up corresponding fluid movements that are detected by the two neutral buoyancy 3D hydrophone receivers and geophones, allowing the wave velocity to be determined. The facility to stack multiple shots and filter the data as in normal seismic data acquisition is included in the operating software.
The WISON-APB-Classic is capable of performing cone penetration tests (CPTs) and taking soil samples at depths up to 550 m (water depth + drilling depth). It requires a drill string with an inner diameter of at least 101.6 mm (4") and a drill tower clearance ... Moreof 11 m. The WISON-APB 100 version has a pushing capacity of 100kN and is capable to performing tests with a 1m and 3m stroke length. The WISON-APB 100 comes with an electric winch that is self-tensioning for heave compensation. The winch allows the tool to travel at a maximum speed of 2 m/s inside the drill string.

Key Features

Proven wireline CPT system with a pushing force of 100kN

Water depth + drilling depth up to 550m

CPT stroke of 1m or 3m

Suitable for 5cm² and 10cm² Icones (up to 100MPa tip resistance)

Suitable for soil sampling with the Push or Piston Sampler

Remote-controlled and electrical constant tensioning winch, power pack, mast and sheave block

Software for realtime data acquisition and control

Works in conjunction with Dando 9000 rotary drill rig
The Flat Dilatometer (DMT) is an in situ test for the determination of various key soil parameters used for geotechnical design. The test is rapid, accurate, simple and cost-effective. The results are highly repeatable and independent from the operator. ... MoreThe blade may be advanced with most common field machines, including penetrometers and drill rigs. DMT measurements are performed in situ, directly on the soil in its original position and state. This eliminates the disturbance caused by drilling, sampling and transport to laboratory. The profiles of the results are available real time during test execution. The direct measurement of soil deformation enables accurate estimations of the elastic modulus. The KD parameter provides stress history information of the soil, a very difficult property to estimate with other testing methods.

Main Applications

Main Applications

Soil stratigraphy

Stress history (OCR, K0)

Settlement prediction

Soil Improvement quantification

Slip surface detection in clayey slopes

P-y curves for laterally loaded piles

Liquefaction potential

Permeability in clay

FEM input parameters (e.g. Plaxis)

Subgrade modulus for pavements

Subgrade modulus for diaphragm walls
The Geoforce DTS® deep-tow boomer/sparker system is a high resolution sub-bottom profiler incorporating the boomer and sparker subsystems in a single tow fish. The system has been designed for use in the world’s toughest offshore environments, where ... Morereliability, ease of operation, accuracy and optimal data resolution are of paramount importance.

Geoforce Group have implemented fully digital communications between the towed equipment and topside equipment, allowing in lossless hydrophone and sensor data. The Geoforce DTS® is the only system to have two acoustic sources integrated in the same tow body, the selection of the acoustic source can be controlled by the surface interface - Geoforce Cerebella.

The evolution of the Geoforce DTS® Boomer/Sparker Sub-Bottom Profiler over more than four decades is an important case study in successful Canadian Government/Private Sector collaboration (McKeown et al, 2014). It demonstrates how a survey tool can retain its competitiveness in global seafloor mapping through continuous improvements building on the solid Huntec DTS core technology.
GONG is a high-level Weather Downtime (WDT) and Metocean Data Resources online tool developed by IMDC. The easy-to-use tool allows engineers to quickly assess the marine conditions at any offshore location around the world for offshore wind, wave energy, ... Moresubsea cables, ports, LNG terminals and other infrastructure. GONG calculates monthly and yearly discrete WDT and key metocean statistics (e.g. waves, wind etc) for high-level offshore wind installation activities based on a wind or wave threshold (e.g. P90).
Geoquip Marine have designed and built the Twin Ram Drilling Rig (GMTR150) which will complement the company's existing fleet and enable expansion into deep water markets. The GMTR150 drilling system is a fully heave compensated (6m stroke) drilling ... Morerig. The GMTR150 incorporates a top drive unit capable of handling 5½" or 6⅝" API drill string.

The GMTR150 is suitable for drilling, coring, sampling and testing in all soil conditions in water depths plus borehole depth of up to 3,500m. The Geoquip Marine designed Bottom Hole Assembly (BHA) allows the downhole tools to be fully interchangeable, even with coring, thus mitigating the requirement to recover the drill string (as with some other offshore drilling systems) to change sampling/testing modes.

Wireline cone penetration testing (CPT), push/piston sampler, PS suspension logger, and other downhole tools can be used without having to retrieve the drill string. This makes the sampling process more efficient. The reaction (weight) for the downhole sampling and testing is provided by the 27-tonne seabed frame. The seabed frame incorporates an electronically-driven subsea hydraulic power pack to operate clamps to grip the drill string during testing/sampling if required.

Geoquip Marine's GMTR geotechnical drilling rigs are a series of modular ram hoist type rigs designed to be easily mobilised onto vessels of opportunity. Sufficient spares are carried onboard to perform general repairs whilst offshore. The rig and component parts are designed for transport in standard open-top shipping containers.
Geoquip Marine have designed and built a fully heave-compensated, offshore geotechnical drilling system base around the GMR series. A major consideration in the design of the rig is to reduce mobilisation time and cost in logistically challenging locations ... Moreby creating a set of simple system components which minimise the requirements for interfacing with the vessels services.

The GMR300-type geotechnical drilling rig and associated equipment can deploy in excess of 360m of drill string. The GMR300 Series is configured to handle our standard drilling and down-hole sampling, coring and in situ testing tools. A comprehensive range of wireline downhole sampling and testing tools is available including wireline piezocone penetration testing (PCPT, piston sampling, push sampling, wireline core barrel, and percussion (hammer) sampling. All downhole tools (coring, sampling, PS suspension logging) are fully compatible within the 5½" or 6⅝" API drill string.
The Geoquip Marine GMR600 offshore geotechnical drilling rig design is the product of over 30 years' experience of designing, building and operating such rigs. It is a fully heave compensated, offshore geotechnical drilling system.... More

The principle of easy transportation and subsequent mobilisation on board a vessel of opportunity is one of the main design premises of the GMR600. Based on ISO container sized dimensions, each derrick section is an approved shipping container, unique to this series.

The GMR600 is suitable for conducting drilling and sampling in all soil conditions up to 600m (water depth plus borehole depth) using steel API drill pipe. A drop in wireline core barrel is used where variable cemented materials are encountered enabling core samples to be obtained without the need to recover the drill string. All downhole tools are fully interchangeable within the single drill string and bottom hole assembly such that any sampling and testing regime can be accommodated.

The GMR600 rig has a Dando 1000 top drive power swivel capable of handling a maximum 6⅝" API drill string length of 700m. An 8 to 20t seabed frame is used to clamp the drill string to enable downhole sampling and in situ testing to be performed using a suite of downhole tools. The rig can be combined with Geoquip Marine's other equipment, including
Lighthouse's Teledyne Gavia Offshore Surveyor AUV is a self contained, low logistics, modular survey platform, capable of delivering high quality data while operating from vessels of opportunity or from shore.... More

The Gavia AUV comprises multibeam echosounder (MBES), side scan sonar (SSS) and sub-bottom profiler (SBP) payload and allows Lighthouse to perform detailed surveys down to 1,000m water depth and to work very close to platforms and targets. Very easy deployment, great data quality, and fast survey execution are the main benefits of the Gavia AUV.
Geoquip Marine designed, built and commissioned the Twin Ram Drilling Rig (GMTR120) in 2013, which complements the company’s existing fleet of geotechnical drilling rigs and enabled the expansion into deep water markets.... More

The GMTR120 geotechnical drilling rig is compatible with a wide range of wireline, downhole sampling, testing and logging equipment. This includes piezocone penetration testing (CPTU/PCPT), push/piston and percussion sampling, rotary coring, and P-S suspension logging tools. All can be run interchangeably without recovering the drill string. The GMTR120 is also capable of running Logging While Drilling Bottom Hole Assemblies to provide detailed geophysical, geomechanical, petrophysical and geological borehole data.

The GMTR120 is suitable for drilling, coring, sampling and testing in all soil conditions in water depths plus borehole depth of up to 2,500m with an option to extend to 3,000m.

Geoquip Marine's GMTR series rigs are a series of modular ram hoist type rigs designed to be easily mobilised onto vessels of opportunity. The parts are designed for shipping in standard open top containers.

The rig has an automatic pipe handling system, ram hoist system with twin wire suspension for safe and controlled handling of in-hole tools and 6m passive stroke compensation (improved sample recovery and quality).

The seabed frame can clamp onto the drill string and enable in situ testing with the downhole CPT. Furthermore, the GMTR120 is capable of lowering and hoisting the GMCPT200 seabed CPT system, which enables rapid execution of CPT surveys, especially for offshore wind farm projects.
The drilling rig is capable of conducting drilling, sampling and testing operations from a jack-up barge. A simultaneous drilling and casing system is operated with this rig - this being far more efficient in terms of time and equipment than traditional ... Morerod based drilling systems.

The wireline piston sampler or core barrel, and the casing are advanced together, ensuring a high quality sample recovery and a stable borehole. When full, the piston sampler or core barrel is 'delatched' from the lead length of casing, brought to deck level and the sample extruded horizontally.

Guar gum powder is used to form the flush medium during drilling operations. It is mixed with seawater, and the resulting ‘mud’ or flush is then pumped downhole, providing lubrication during drilling, stabilising the borehole and lifting away the cuttings from the base of the hole.

The nearshore spread can be mobilised with a geotechnical soil testing laboratory, allowing technicians and geotechnical engineers to determine soil classification and strength parameters for use in engineering during fieldwork operations. Testing that can be performed in the field laboratory includes: miniature vane, pocket penetrometer and torvane shear strength testing, bulk and dry densities, and unconsolidated undrained triaxial testing and full geotechnical field descriptions to BS 5930 or ASTM standards.

This drilling spread allows the acquisition of high quality data in real-time, which coupled with on board logging and laboratory testing, allows engineering analyses such as spudcan and pile capacity, to be conducted in the field.

Piezocone Penetration Testing (PCPT/CPTU) using AP van den Berg WISON-APB wireline CPT system can be conducted with this spread. It is a wireline system and can be used interchangeably with the sampling and coring barrel, giving the advantage of a flexible sampling and testing regime. As with the sampling and coring equipment, this wireline testing system ensures maximum efficiency during drilling operations. The 10cm² cone with a 3m stroke is an ideal tool to be used in soft ground, giving high quality data.

Parameters recorded by the cone are displayed in real-time on the acquisition computer, include tip resistance, sleeve resistance and pore water pressure. The stroke length during a test is measured by a calibrated flow cylinder.
Geoquip Marine have developed a 200kN Seabed Cone Penetration Testing (CPT) system (GMC200) capable of operating in water depths up to 2,000m providing a push capacity of 200kN (20t). This enables the recovery of in situ soil engineering data to a depth ... Moreof 40m or more below the seabed (depending on soil conditions).

The GMC200 unit has a subsea hydraulic power unit (HPU) which is mounted on the subsea frame and provides power to the chain drive system (CDS) to push/pull the CPT string and clamping force onto the CPT string by means of hydraulic cylinders.

Key Features

200kN (20t) thrust capacity

Depth rating to 2,000m

Chain drive system (CDS)

Penetration to +40m below seabed (depending on soil conditions) 
Geoquip Marine operates a Robertson Geo PS Logger Probe – a low-frequency acoustic sonde designed to measure compressional (P) and shear-wave (S) velocities in soils and soft rock formations. It operates using indirect excitation rather than mode conversion ... Moreas in a conventional sonic. It is capable of acquiring high resolution P and S wave data in borehole depths of up to 600m in water.

The PS Logger probe contains a unique design of powerful hammer source and two receivers, separated by acoustic damping tubes. To acquire data, the probe is stopped at the required depth and the source is fired under surface command. Firing causes a solenoid-operated shuttle aligned across the borehole axis to strike plates on opposite sides of the probe in turn, setting up a pressure doublet in the surrounding fluid. The resultant fluid motion produces a tube wave at the borehole wall with velocity close to the shear velocity of the formation together with a compressional wave.

As the waves propagate parallel to the borehole axis, they set up corresponding fluid movements that are detected by the two neutral buoyancy 3D hydrophone receivers and geophones, allowing the wave velocity to be determined. The facility to stack multiple shots and filter the data as in normal seismic data acquisition is included in the operating software.
Geoquip Marine own and operate a Geovista DPS Downhole P&S sonde which allows simultaneous measurement of P & S wave velocities within the borehole environment. It comes with one transmitter and two receiver modules. The energy source of the ... Moretransmitter operates as a dipole source. Each receiver contains two transducers, one for the detection of the compression waves (P) and the other for the detection of the shear waves (S). Each transducer responds to different frequencies. The sonde is stopped at selected depths where acoustic data is acquired in different modes that allow the determination of these P and S velocities. This is done without the need for clamping and this method gives better accuracy and resolution than other seismic methods.

The performance of the system is engineered to give good results in the slower formations encountered at shallow depths while also performing well in deeper formations with higher velocities. The data acquired by the system is recorded in the industry standard SEG2 file format, allowing many commercially available packages to read the data.
Geoquip Marine have developed a 200kN Seabed Cone Penetration Testing System (GMC201) capable of operating in water depths up to 800m (which can be extended to 2,000m on demand), providing a push capacity of 200kN (20t). This enables the recovery of ... Morein situ soil engineering data to a depth of 40m or more below the seabed (depending on soil conditions).

The GMC201 Seabed CPT unit has two electrical motors which power the chain drive system (CDS) and the piezoelectric cone (PCPT) into the soil.

Key Features

200kN (20t) thrust capacity

Depth rating to 800m (2,000m optional)

Electrically-driven chain drive system (CDS)

Penetration to +40m below seabed (depending on soil conditions)