aoil survey presentation

AOIL SURVEY PRESENTATION

Abhay Ocean offers a complete range of Marine surveyservices, including desktop studies (DTS), topographic landingsurveys, shallow-water (including diver swim) surveys, IHObathymetry, pre- and post-dredge, submarine cable and pipelineroute surveys, covering the whole route from landing site, nearshore to full ocean depths.

ABHAY OCEAN INDIA PVT LTD Established in 1998 atMumbai, by Capt. Jagdish Khokhar an ex Indian navalofficer, having over 35 years experience in managing &executing wide variety of projects in Marine/OffshoreServices.

WWW.ABHAY-OCEAN.COM [email protected]

Abhay Ocean offers a complete range of Marine surveyservices, including desktop studies (DTS), topographic landingsurveys, shallow-water (including diver swim) surveys, IHObathymetry, pre- and post-dredge, submarine cable and pipelineroute surveys, covering the whole route from landing site, nearshore to full ocean depths.

Abhay Ocean is ready to provide customized geotechnicalservices to ISO, ASTM and NGI guidelines. Our track recordincludes successful projects.We routinely utilize various overburden-sampling tools such asvibrocoring systems, piston corers, gravity corers and grabsampling units, as well as box samplers and ROV push-typecorers.

Abhay Ocean measures a range of oceanographic andmeteorological parameters, all of which are important both fordesign and operational purposes. Oceanographic measurementsare made in water depths ranging from coastal areas to fullocean depth.

As a part of our survey services, we Abhay Ocean provide comprehensive survey andmarine services to both offshore and onshore industry to support every stage of thedevelopment of construction facilities.

ABHAY OCEAN’S Survey services support every stage in the development of bothonshore, offshore and near shore facilities. These include geophysical andgeotechnical investigations, bathymetry, Hydrographical survey to provide theinformation required by engineers designing offshore platforms, pipelines and cables,and to support dredging, reclamation and other near shore civil works.

Shallow seismic records are interpreted by our geophysicists to understand complexseabed geology and sonar records are used to map seabed features that have beenidentified and located during the survey.

Our engineers examine soil samples recovered from drilling operations to calculatesoil strength and perform foundation engineering studies required by the engineersand designers of both onshore and offshore structures / constructions.

The geophysical information gathered is required prior to the design and installationof subsea pipelines and offshore structures. Hydrographic surveys are carried out tochart the seafloor and used for navigation or engineering, design purposes andvolume calculation for dredging activities.


As a part of our survey services, we Abhay Ocean provide comprehensive survey andmarine services to both offshore and onshore industry to support every stage of thedevelopment of construction facilities.

ABHAY OCEAN’S Survey services support every stage in the development of bothonshore, offshore and near shore facilities. These include geophysical andgeotechnical investigations, bathymetry, Hydrographical survey to provide theinformation required by engineers designing offshore platforms, pipelines and cables,and to support dredging, reclamation and other near shore civil works.

Shallow seismic records are interpreted by our geophysicists to understand complexseabed geology and sonar records are used to map seabed features that have beenidentified and located during the survey.

Our engineers examine soil samples recovered from drilling operations to calculatesoil strength and perform foundation engineering studies required by the engineersand designers of both onshore and offshore structures / constructions.

The geophysical information gathered is required prior to the design and installationof subsea pipelines and offshore structures. Hydrographic surveys are carried out tochart the seafloor and used for navigation or engineering, design purposes andvolume calculation for dredging activities.

•Pipeline and cable route surveys

•Rig and platform site surveys

•High resolution seismic surveys

•Large scale mapping / hazard surveys

•Near shore geophysical Surveys

•Bathymetric surveys

•Hydrographic Surveys

•Hydro Dam & Reservoir Surveys

• Land Survey

• Oceanographic Survey

• Dredging Survey

• Geotechnical & Geophysical Survey

• Navigational & Positioning Survey

• Mooring

• Offshore survey

• Soil Investigation & Material Testing

WE PROVIDE THE FOLLOWING SERVICES FOR:

AOIL uses a wide variety of technologies in order to createaccurate assessments of a range of underwater conditions. Allsurveys use a combination of technologies as necessary for therequirements of the project.

Digital sonar

Scanning or side-scan sonar

Sub-bottom profiling systems

Differential global positioning system (DGPS)

Robotic total station

Laser

Digital CCTV

Special camera lenses

Gas sensor

Solid state bearing and inclinometer

Electronic tide gauge

Long tether

UNDERWATER SURVEY TECHNOLOGIES FORINSPECTION OF UNDERWATER CONDITIONS


AOIL uses a wide variety of technologies in order to createaccurate assessments of a range of underwater conditions. Allsurveys use a combination of technologies as necessary for therequirements of the project.

Digital sonar

Scanning or side-scan sonar

Sub-bottom profiling systems

Differential global positioning system (DGPS)

Robotic total station

Laser

Digital CCTV

Special camera lenses

Gas sensor

Solid state bearing and inclinometer

Electronic tide gauge

Long tether

DIGITAL SONARSonar is a basic tool of underwater surveys.A programmable, narrow-beam sonar head generates an acoustic pulse. The soundfrequency and pulse can be modified and calibrated to suit conditions. When thesound pulse hits a target, it bounces back and the echo appears as a data point.Data points are calculated using the angle of the sonar head, the speed of sound inwater and the travel time.

Consecutive profiles or cross-sections of the pipe, surface or other targeted featureare built as the rotating sonar head mechanically sweeps about its axis and travelsalong a pre-determined path. When operating within a ±45° angle of incidence tothe targeted feature, the overall accuracy of our sonar system is considered to bebetter than 0.5% of range.

The sonar system can be deployed from a robotic tractor, skid, float or small boat.Data from the sonar, attitude sensor and other technologies is fed into our softwareand used to calculate X, Y and Z information, and can then be produced in avariety of formats. When the sonar is combined with a CCTV camera, the sonarimage is displayed on screen as a picture in picture.Using sonar, data can be gathered from a vertical dam face, across the bottom,under overhangs or other vertical structures, or inside pipes and sewers.


DIGITAL SONARSonar is a basic tool of underwater surveys.A programmable, narrow-beam sonar head generates an acoustic pulse. The soundfrequency and pulse can be modified and calibrated to suit conditions. When thesound pulse hits a target, it bounces back and the echo appears as a data point.Data points are calculated using the angle of the sonar head, the speed of sound inwater and the travel time.

Consecutive profiles or cross-sections of the pipe, surface or other targeted featureare built as the rotating sonar head mechanically sweeps about its axis and travelsalong a pre-determined path. When operating within a ±45° angle of incidence tothe targeted feature, the overall accuracy of our sonar system is considered to bebetter than 0.5% of range.

The sonar system can be deployed from a robotic tractor, skid, float or small boat.Data from the sonar, attitude sensor and other technologies is fed into our softwareand used to calculate X, Y and Z information, and can then be produced in avariety of formats. When the sonar is combined with a CCTV camera, the sonarimage is displayed on screen as a picture in picture.Using sonar, data can be gathered from a vertical dam face, across the bottom,under overhangs or other vertical structures, or inside pipes and sewers.

SCANNING OR SIDE-SCAN SONAR


AOIL uses side-scan sonar to investigate seafloor conditions such as scourpatterns, obstructions, the type and size of debris, and the condition ofpipelines and cables. Side-scan is useful in detecting debris items and otherobstructions that may be hazardous to shipping or to seafloor installations bythe oil and gas industry. Side-scan sonar is also used for dredging operationsand environmental studies.

Side-scan uses a sonar device that emits fan-shaped pulses toward the seaflooracross a wide angle perpendicular to the path of the sensor through the water,which may either be towed from a surface vessel, or the sensor may be rotatedabout a stationary point.

The intensity of the acoustic reflections from the seafloor is recorded in aseries of cross-track slices. When stitched together along the direction ofmotion, these slices form an image of the sea bottom within the swath(coverage width) of the beam, and the resulting images can be combined andoverlaid on a 3D wire mesh surface.Side-scan data are frequently acquired along with sub-bottom profiler data.

SUB-BOTTOM PROFILING SYSTEMS


Especially useful in surveys of river crossings, sub-bottomprofiling systems measure the positions of objects that exist belowthe bottom. A sound source emits a signal downwards into thewater and a receiver records the reflected return. Some of theacoustic signal will penetrate the bottom and be reflected when itencounters a change in density such as a pipeline or sedimentlayers. The system uses this reflected energy to provideinformation on features beneath the bottom.

Sub-bottom profiling systems can be useful for calculating pipecover or exposure, or areas of concern. The penetration depthdepends on the hardness of the overlying layers and the presenceof gas deposits, such as methane.

Differential Global Positioning System (DGPS)


Accurate positioning allows precise geo referencing and accuratecollation of data from multiple technology sources.

The Differential Global Positioning System (DGPS) is anenhancement to the Global Positioning System. It uses a network offixed, ground-based reference stations to broadcast the differencebetween the positions indicated by the satellite systems and theknown fixed positions.

Depending on the accuracy required, AOIL uses a Trimble ProXRS (sub metre) or RTK GPS (centimetre) receiver. The Pro XRSoffers GPS, WAAS, EGNOS, satellite differential, and beaconcapabilities. It also uses patented multipath rejection technology toremove multipath signals in reflective environments.

Robotic total stationFor tracking and positioning tocentimetre accuracy we use aTrimble 5600 or Trimble S6robotic total station incombination with the sonarhead prism. The S6 has a spinrate of 115 degrees per secondand a distance accuracy of +/-0.8 mm +1 ppm.


LaserAOIL uses proprietary lasermeasurement devicesspecifically to obtain data onpipe profiles above the waterline. Combining sonar and laserdata provides a complete pipeprofile, while adding digitalCCTV images enables post-survey review of actual pipecondition.

ELECTRONIC TIDE GAUGE


To track water elevation we us a submersible pressuretransmitter. This device stores pressure, temperature and timedata, and the data is also monitored in real time via a radio link.The tide gauge is calibrated on site by following our writtenprocedures for field calibration.

HYDROGRAPHIC SURVEYS


AOIL Surveyor conducts hydrographic surveys using single-beam and multi-beam depth sounders with hull-mountedtransducers. We use the most stringent Class 1 standardsrequired by the Engineers for pre- and post-dredgehydrographic surveys.

The activities in the offshore industry are the mainstay of ourbusiness. From positioning to surveying and mapping; thecompany is well-equipped to offer a full service to the oil anddiamond mining industries.

The supply and interpretation of high resolution multibeamsurveys is key to the success of many of our clients andUnderwater Surveys has undertaken work for most of the largerdiamond mining and oil exploration companies.

Oil exploration/drilling activities off the West and East coasts areof particular interest and Underwater Surveys is well geared tosupport companies operating there.Demand for marine phosphates is on the increase and some marinediamond miners are focusing on this resource as the pricecontinues to climb on international markets.

OFFSHORE SURVEYS



The supply and interpretation of high resolution multibeamsurveys is key to the success of many of our clients andUnderwater Surveys has undertaken work for most of the largerdiamond mining and oil exploration companies.

Oil exploration/drilling activities off the West and East coasts areof particular interest and Underwater Surveys is well geared tosupport companies operating there.Demand for marine phosphates is on the increase and some marinediamond miners are focusing on this resource as the pricecontinues to climb on international markets.

PORT/ DREDGING SURVEYS


The ongoing activity in India with regard to harbour and portupgrades is also of particular interest to Underwater Surveys aswe focus on port and harbour breakwater surveys as well as preand post dredge surveys.

It is important to establish an accurate measure of dredgingvolumes, because dredgers charge per cubic metre dredged and adiscrepancy in the amount invoiced versus the actual amountdredged should be avoided.

We have done a lot of work to enhance the safety of navigation.In some cases a port survey in the developing countries hasincreased the usability of the port, as well as lowered theinsurance premiums for internationally registered vessels enteringthe port.

OFFSHORE SURVEYS


The supply and interpretation of high resolution multi-beamsurveys is key to the success of many of our clients andUnderwater Surveys has undertaken work for most of thelarger mining and oil exploration companies.Oil exploration/drilling activities off the West and East coastsare of particular interest and Underwater Surveys is wellgeared to support companies operating there.Demand for marine phosphates is on the increase and somemarine diamond miners are focusing on this resource as theprice continues to climb on international markets.

Offshore Surveys ServicesPort Clearance & Harbour Breakwater Surveys

Approach Channel Surveys

Cable Route Surveys

Pipeline Inspection/Route Surveys

Pre- and Post Dredge Surveys

Diamond Mining Surveys

Regional Mapping Surveys

Archaeological SurveysWWW.ABHAY-OCEAN.COM [email protected]

OFFSHORE SURVEYS


The supply and interpretation of high resolution multi-beamsurveys is key to the success of many of our clients andUnderwater Surveys has undertaken work for most of thelarger mining and oil exploration companies.Oil exploration/drilling activities off the West and East coastsare of particular interest and Underwater Surveys is wellgeared to support companies operating there.Demand for marine phosphates is on the increase and somemarine diamond miners are focusing on this resource as theprice continues to climb on international markets.

Offshore Surveys ServicesPort Clearance & Harbour Breakwater Surveys

Approach Channel Surveys

Cable Route Surveys

Pipeline Inspection/Route Surveys

Pre- and Post Dredge Surveys

Diamond Mining Surveys

Regional Mapping Surveys

Archaeological Surveys

POSITIONING


Accurate underwater positioning is extremely important in theoffshore environment/industry and with satellite-based wide areaGPS positioning system that we offer – we are able to provide"decimeter accuracy" anywhere in the world.

Our positioning services include the following-Satellite Navigation Services

Surface and Underwater Positioning Solutions

ROV Positioning Support

Rig and Anchor Handling Positioning Support

RTK GPS Positioning

AOIL has a survey division that specialize in inland hydrographicsurveys and the whole spectrum of engineering surveys.

Specialised Inland Hydrographic and Engineering SurveysInland Hydrographic Surveys (Single / High Resolution

Multibeam Echo Sounding)

Sedimentation Surveys in Dams, Barrages and Rivers

Capacity Surveys of Reservoirs/Dams (% Useable Water and %

Dead Water)

Determining Lowest Outlet of Reservoirs/Dams

River Profiling for Hydrological Studies

River Profiling for Flood Line Calculation

River Profiling for Environmental Studies

River Profiling for Engineering Design

As-Built Structure Surveys on Land and in Water

Engineering Inspections of Dam Walls

Capacity and Engineering data plan for Water ResourceManagement of dams using singlebeam/multibeam echosounderand a combination of conventional survey methods


AOIL has a survey division that specialize in inland hydrographicsurveys and the whole spectrum of engineering surveys.

Specialised Inland Hydrographic and Engineering SurveysInland Hydrographic Surveys (Single / High Resolution

Multibeam Echo Sounding)

Sedimentation Surveys in Dams, Barrages and Rivers

Capacity Surveys of Reservoirs/Dams (% Useable Water and %

Dead Water)

Determining Lowest Outlet of Reservoirs/Dams

River Profiling for Hydrological Studies

River Profiling for Flood Line Calculation

River Profiling for Environmental Studies

River Profiling for Engineering Design

As-Built Structure Surveys on Land and in Water

Engineering Inspections of Dam Walls

Capacity and Engineering data plan for Water ResourceManagement of dams using singlebeam/multibeam echosounderand a combination of conventional survey methods

TOPOGRAPHIC SURVEY SERVICES

Our experience hasseen us tested insome of the mostchallengingenvironments inIndia, from windswept coastlines &beaches, tidalcauseways, dry-dockinstallations andworking quarry &landfill sites.


We have also completed surveys on airport runways, road bridges,piers, carriageways, within water treatment works, along pipelineroutes, and almost every other modern day location and facility.

Our experience hasseen us tested insome of the mostchallengingenvironments inIndia, from windswept coastlines &beaches, tidalcauseways, dry-dockinstallations andworking quarry &landfill sites.

HYDROGRAPHIC SURVEY SERVICES

Single Beam BathymetryMultibeam BathymetrySide-Scan SonarSub-Bottom ProfilingGeophysical SurveyMagentometer SurveysDiver Inspection SurveysDiver InspectionsMarine Support ServicesSurvey Vessel Charter

Aspect Land & Hydrographic Surveys' marine survey division offers a widevariety of skills and services, including bathymetric surveys, side-scan sonarimagery, magnetometer surveys, sub-bottom profiling, full geophysicalinterpretation & analysis and dock wall surveys / investigation.

Our capabilities include single or multibeam echosounder bathymetry toprovide the client's required resolution in either 2D paper or electronic plotor as a 3D model, be that a fly through for presentation purposes orconventional models to allow engineering development or scientificinterpretation. Our bathymetric data can be overlain with geo-referencedsonar backscatter imagery either from side-scan or Multibeam echosounder.

Full, high-resolution multibeam bathymetry products can include a varietyof digital files for ingestion in other modelling or design software, paperproducts including detailed bathymetry, colour-banded contours,geomorphological assessment and underwater target detection andclassification.


HYDROGRAPHIC SURVEY SERVICES

Single Beam BathymetryMultibeam BathymetrySide-Scan SonarSub-Bottom ProfilingGeophysical SurveyMagentometer SurveysDiver Inspection SurveysDiver InspectionsMarine Support ServicesSurvey Vessel Charter

Aspect Land & Hydrographic Surveys' marine survey division offers a widevariety of skills and services, including bathymetric surveys, side-scan sonarimagery, magnetometer surveys, sub-bottom profiling, full geophysicalinterpretation & analysis and dock wall surveys / investigation.

Our capabilities include single or multibeam echosounder bathymetry toprovide the client's required resolution in either 2D paper or electronic plotor as a 3D model, be that a fly through for presentation purposes orconventional models to allow engineering development or scientificinterpretation. Our bathymetric data can be overlain with geo-referencedsonar backscatter imagery either from side-scan or Multibeam echosounder.

Full, high-resolution multibeam bathymetry products can include a varietyof digital files for ingestion in other modelling or design software, paperproducts including detailed bathymetry, colour-banded contours,geomorphological assessment and underwater target detection andclassification.

SINGLE BEAM BATHYMETRY


Our single beam (SBES) bathymetric surveys are primarilyconducted using survey grade Kongsberg Maritime EA400 dualfrequency echo sounders. Other equipment may be utilized to suitthe client's needs and the operating environment as required. RTKGPS positioning is preferred and heave compensation is applied toall surveys.

Tidal data is either processed from the RTK GPS or obtained fromthe deployment of a fully calibrated and referenced tide gauge.High quality survey planning, real time quality assurance andstringent post survey quality control assure appropriate surveystandards are met. We adhere to nationally and internationallyaccepted hydrographic survey standards including theInternational Hydrographic Organization's.

MULTIBEAM BATHYMETRY


AOIL operate a Kongsberg EM3002 shallow water high definition multibeam(MBES) system. This system is optimized to operate in depths between 0.5 and200m.The system operates a swath width of 4 x water depth as standard. Whenoperating in extreme shallow water and when the client requires 100% seabedinsonification we prefer to utilize a second transducer making this system a dualhead EM3002, capable of swath widths up to 10x water depth and therebyreducing the time taken on the data gathering task very significantly.

Multibeam Bathymetry Services-- Bathymetric surveys to IHO Special Order standard- Environmental surveys- Offshore renewable energy projects- Dock wall inspections- Marine archaeology projects- Wreck and object detection- Dredging control and monitoring

Side-scan sonar is used to create an image of large areas of thesea floor, this system is used for mapping the seabed for a widevariety of purposes, including creation of nautical charts and thedetection and identification of underwater objects andbathymetric features.

It is also used to conduct surveys for marine archaeology and inconjunction with seafloor samples it is able to provide anunderstanding of the differences in material and texture type ofthe seabed.

Side-scan sonar imagery is also commonly used to detect items ofdebris and other obstructions on the seafloor that may behazardous to shipping or to seafloor installations, such oil and gaspipelines, outfalls, cable routes, oil / gas platform positioning andmarine industry construction works.

SIDE-SCAN SONAR SURVEY

SIDE SCAN SONAR TO IDENTIFY & PIPELINES OR OUTFALLS.


Side-scan sonar is used to create an image of large areas of thesea floor, this system is used for mapping the seabed for a widevariety of purposes, including creation of nautical charts and thedetection and identification of underwater objects andbathymetric features.

It is also used to conduct surveys for marine archaeology and inconjunction with seafloor samples it is able to provide anunderstanding of the differences in material and texture type ofthe seabed.

Side-scan sonar imagery is also commonly used to detect items ofdebris and other obstructions on the seafloor that may behazardous to shipping or to seafloor installations, such oil and gaspipelines, outfalls, cable routes, oil / gas platform positioning andmarine industry construction works.

GEOPHYSICAL SURVEY

Geophysical survey, orreflection seismology, is amethod of exploratorygeophysics that uses theprinciples of seismology toestimate the properties of theearth's subsurface fromreflected seismic waves.

The method requires a controlled seismic source of energy, and bynoting the time it takes for a reflection to arrive at a receiver it ispossible to estimate the depth of the feature that generated thereflection.

Some of the acoustic signal will penetrate the seabed and bereflected when it encounters a boundary between two layers thathave different acoustical properties, known as acoustic impedance.


Geophysical survey, orreflection seismology, is amethod of exploratorygeophysics that uses theprinciples of seismology toestimate the properties of theearth's subsurface fromreflected seismic waves.

Magnetometry measures local variations in the earth's magnetic field.Small local anomalies result from the contrasting levels of magneticsusceptibility which exist between in filled 'cut' features or structures andthe local substrate or bedrock. This effect is principally due to the varyingiron content in the soil and rock forming minerals.

The majority of magnetometer surveys are undertaken with a gradiometerwhich measures the magnetic gradient between two sensors(magnetometers) arranged on a horizontal separation, normally 1m or 2mapart.

Readings can be automatically logged allowing large amounts of data to berecorded and stored quite rapidly.

Surveys are usually undertaken along predetermined gridlines, logging atan average of four readings per metre.

Post-processing of data on-site allows the survey results to be monitoredand modified as required.

MAGNETOMETER SURVEY


Magnetometry measures local variations in the earth's magnetic field.Small local anomalies result from the contrasting levels of magneticsusceptibility which exist between in filled 'cut' features or structures andthe local substrate or bedrock. This effect is principally due to the varyingiron content in the soil and rock forming minerals.

The majority of magnetometer surveys are undertaken with a gradiometerwhich measures the magnetic gradient between two sensors(magnetometers) arranged on a horizontal separation, normally 1m or 2mapart.

Readings can be automatically logged allowing large amounts of data to berecorded and stored quite rapidly.

Surveys are usually undertaken along predetermined gridlines, logging atan average of four readings per metre.

Post-processing of data on-site allows the survey results to be monitoredand modified as required.

DIVER INSPECTION SURVEYS


The divers represent some of the most experienced in the countryand have developed a reputation for performing the most difficultof underwater tasks safely, efficiently and in a timely & costeffective manner.

Complex survey and salvage operations have been accomplishedat open water locations in water depths of up to 40 metres, withsafety and professionalism paramount in all operations.

.

MICRO-BATHYMETRY AND UNDERWATER METROLOGY


Micro-bathymetry relies on high precision acousticmeasurements and definition. It is done by surveying with highaccuracy and resolution multibeams that result in clouds ofgeoreferenced sounding points that can be visualized in 3D. It isdone by scanning in multiple passes with either remotecontrolled vehicles or autonomous from various vantage points.

It has applications in 3D site surveys and structure inspections,dam, bridge and harbor inspection, archaeology relatedactivities and scour and erosion monitoring. Following the highprecision and resolution data, distances and surfaces can be veryrigorously measured.

We have the equipment andexpertise to undertake a widerange of marine supportservices, including pre & postdredge surveys, turbiditymonitoring, barge & rigpositioning and associatedworks whether in openwaters or congestedharbours, waterways orapproach channels.

Dredging Surveys &SupervisionWe have significantexperience in dredgingsupervision works, includingpre and post dredge surveysand payment volumecalculations.

MARINE SUPPORT SERVICES


We have the equipment andexpertise to undertake a widerange of marine supportservices, including pre & postdredge surveys, turbiditymonitoring, barge & rigpositioning and associatedworks whether in openwaters or congestedharbours, waterways orapproach channels.

Dredging Surveys &SupervisionWe have significantexperience in dredgingsupervision works, includingpre and post dredge surveysand payment volumecalculations.

We regularly conduct interim surveys for numerous dredgingcontractors throughout India- although we act as an independentsurvey company, which is a major benefit to the client or port authority.Dredger OperationsPlough Dredging-We also act as the client's representative oncontractor's surveys to witness and verify survey results, as required inmany contracts. Projects include both Capital Dredging works (quayconstruction, etc) utilising Backhoe or Bucket dredgers andMaintenance Dredging (removal of silt / sediment over a previouslyestablished level) usually carried out by Grab Hopper dredgers andworkboats operating Plough Levelling techniques.

UNDERWATER INFRASTRUCTURE MAINTENANCE

Underwater infrastructure is often business critical. Byconducting a survey of your underwater infrastructure and creatinga maintenance plan you can maximize utilization and increaselifespan.AOIL can carry out asurvey of your maritimeinfrastructure to assessits current status.Typical structuressurveyed include e.g.port basins, piers,breakwaters, bridges,dams, power plants andoffshore wind parks.

Underwater survey iscarried out with highresolution MBESsensors that gathersignificantly detailedinformation comparedto traditional surveymethods. Survey resultsare not dependent on thewater visibility andsurveys can be carriedout even during nighttime.

AOIL can carry out asurvey of your maritimeinfrastructure to assessits current status.Typical structuressurveyed include e.g.port basins, piers,breakwaters, bridges,dams, power plants andoffshore wind parks.

Underwater survey iscarried out with highresolution MBESsensors that gathersignificantly detailedinformation comparedto traditional surveymethods. Survey resultsare not dependent on thewater visibility andsurveys can be carriedout even during nighttime.

BERTH BOTTOM EROSION

PIPE LINE SURVEYWWW.ABHAY-OCEAN.COM [email protected]

Simultaneously with theunderwater survey, alsoabove water structures aredocumented with a laserscanner, providing anintegrated model of bothunder and above waterstructures.

When extreme precisenessis needed, the surveyresults can be furtherenhanced with a scanningsonar survey, which is themost accurate underwatersurvey method available

LASER SCANNER

Simultaneously with theunderwater survey, alsoabove water structures aredocumented with a laserscanner, providing anintegrated model of bothunder and above waterstructures.

When extreme precisenessis needed, the surveyresults can be furtherenhanced with a scanningsonar survey, which is themost accurate underwatersurvey method available


3D MODEL OF UNDERWATER INFRASTRUCTURE


Survey results are 3D point clouds, which our experts buildinto an extremely accurate, fully integrated model ofunderwater and above the water infrastructures. Expertsanalyze the data and point out any changes in the structures.Typical issues found include quay wall damages, scouring thathas led to slope deformation as well as foreign objects andother changes on sea bed.

channel slope inspection

SCOUR PROTECTION, MONITORING & PREVENTION


The presence of scour (erosion of the seabed surface)around marine structures including offshore wind farmturbines is a common occurrence. Scour preventionmeasures are often deployed when wind turbines areinstalled in order to minimize the risk of future problemsassociated with scour.

Scour erosion around an offshore wind turbine basecaptured real time

UNDERWATER BRIDGE INSPECTION & SCOUR MONITORING


Bridge inspections, conducted by certified bridge inspectiondivers, are the most common activity. Sonars have been used to asmall degree for remote depth monitoring, post-navigationalincident and search/recovery activities. However, bridgeinspections are still primarily conducted using only divers. Theseinspections can be time consuming and present significant healthand safety risks to divers .The 3D sonar provides a real-time, geo-referenced, highresolution imaging that is intuitive and easily understood. It isuniquely suited to fill the role of a submerged structure imagingsystem that equals or exceeds the current standard of visualinspection.

Bridge Inspection close up – visual marks.

UNDERWATER BRIDGE INSPECTION & SCOUR MONITORING


The 3D sonar provides a real-time, geo-referenced, highresolution imaging that is intuitive and easily understood. It isuniquely suited to fill the role of a submerged structure imagingsystem that equals or exceeds the current standard of visualinspection.

Wind Turbine Inspection.

UNDERWATER MANIFOLD 3D INSPECTION & SCOUR MONITORING


CODA OCTOPUS 3D SONAR- SCOUR PROTECTION


CODA OCTOPUS- 3D SONAR- JACKET INSPECTION


CODA OCTOPUS- 3D SONAR PIPELINE INSPECTION


Thank You.

For Any Query Please Contact :

CAPT. JAGDISH KHOKHAR(Managing Director)

Cell: +91 99 2030 9055E-mail: [email protected]

www.abhay-ocean.com


Thank You.

For Any Query Please Contact :

CAPT. JAGDISH KHOKHAR(Managing Director)

Cell: +91 99 2030 9055E-mail: [email protected]

www.abhay-ocean.com