Remote Support from the Sonardyne Survey Group Presentation for: Aquadyne Technical Awareness Seminar 2008 Edward M

1. Remote Support from theSonardyne Survey GroupPresentation for:Aquadyne Technical Awareness Seminar 2008Edward MollerProject SurveyorEdward.Moller@sonardyne.com For direct contact into all members of the survey support group, please send emails to survey.support@sonardyne.comFor direct contact into all members of the survey support group, please send emails to survey.support@sonardyne.com

3. Survey Support GroupOur Mission Services offered include: Field Planning Equipment Optimisation Product and System Awareness Onshore and Offshore Support Your point of contact into Sonardyne Product Development The Sonardyne Survey Support Group is not insured to actively work on offshore projects. We can only act in an advisory role alongside existing survey or engineering operators. We cannot perform �button pushing�.The Sonardyne Survey Support Group is not insured to actively work on offshore projects. We can only act in an advisory role alongside existing survey or engineering operators. We cannot perform �button pushing�.

4. How we can help?The requirement for field Wide Coverage This allows the market to explore new and dedicated technologies for specific applications. The downside is that especially in ever increasing water depths, the increased acoustic footprint of each operator requires management. Also, the use of newer technologies often requires a change in procedural operations. This causes an increase of risk. The Sonardyne Survey Group can eliminate the effect of this increased risk.This allows the market to explore new and dedicated technologies for specific applications. The downside is that especially in ever increasing water depths, the increased acoustic footprint of each operator requires management. Also, the use of newer technologies often requires a change in procedural operations. This causes an increase of risk. The Sonardyne Survey Group can eliminate the effect of this increased risk.

5. Survey Support GroupResources Our 6 staff are located in the UK head office, Plymouth (England) trial facility and in Singapore. This allows us to respond on almost any time zone. There are also surveyors operating out of Brasil and the USA who can be called upon.Our 6 staff are located in the UK head office, Plymouth (England) trial facility and in Singapore. This allows us to respond on almost any time zone. There are also surveyors operating out of Brasil and the USA who can be called upon.

6. Remote Support from theSonardyne Survey Group What is the Survey Support Group Planning and Performance Modelling Equipment Optimisation Product Awareness Support Future Systems

7. LBL PlanningArray Geometry Every LBL array should begin by looking at the geometry of the array to ensure good angles of cut to provide robust positioning. Redundancy is a major factor for ensuring robustness. There are too many support cases whereby operators are trying to track in a four Compatt array and are suffering line of sight problems due to seabed obstacles such as structures. When dropping down to three ranges, the least squares solution has no redundant information and you are open to the computation containing in-correct range observations resulting in poor, incorrect or even zero positioning. Every LBL array should begin by looking at the geometry of the array to ensure good angles of cut to provide robust positioning. Redundancy is a major factor for ensuring robustness. There are too many support cases whereby operators are trying to track in a four Compatt array and are suffering line of sight problems due to seabed obstacles such as structures. When dropping down to three ranges, the least squares solution has no redundant information and you are open to the computation containing in-correct range observations resulting in poor, incorrect or even zero positioning.

8. LBL PlanningLine Of Sight Even with great geometry and redundancy, if seabed obstacles such furrows or mounds are prevalent in the field, the line of sight between them can be blocked. Compatts require line of sight to each other for calibration and then line of sight to the areas in which structures or ROVs require tracking. Even with great geometry and redundancy, if seabed obstacles such furrows or mounds are prevalent in the field, the line of sight between them can be blocked. Compatts require line of sight to each other for calibration and then line of sight to the areas in which structures or ROVs require tracking.

9. LBL PlanningLine Of Sight Multiple analysis between array Compatts and the proposed target need to be assessed. By careful placing of Compatts, even the most harsh of terrains can be covered in an LBL array. Inversely, the terrain may offer great line of sight allowing Compatts to be spread apart further saving the deployment and installation of potentially redundant Compatts. This planning ensures offshore time is not wasted which saves you money.Multiple analysis between array Compatts and the proposed target need to be assessed. By careful placing of Compatts, even the most harsh of terrains can be covered in an LBL array. Inversely, the terrain may offer great line of sight allowing Compatts to be spread apart further saving the deployment and installation of potentially redundant Compatts. This planning ensures offshore time is not wasted which saves you money.

10. LBL PlanningUsing floatation collars and strops Sonardyne has conducted many trails of the use of Compatts in flotation collars. We supply collars so it is in our best interest that they are used correctly. In order to obtain long ranges due to ray bending (see later slide), it can be often advantageous to deploy Compatts higher off the seabed.Sonardyne has conducted many trails of the use of Compatts in flotation collars. We supply collars so it is in our best interest that they are used correctly. In order to obtain long ranges due to ray bending (see later slide), it can be often advantageous to deploy Compatts higher off the seabed.

11. LBL PlanningUsing floatation collars and strops Using information gathered from our deflection trials, we have generated a prediction routine that can asses the movement of Compatts on various strops lengths and widths and in various currents. This takes the guess work out of the expected deflection and allows computation of expected tracking and calibration performance.Using information gathered from our deflection trials, we have generated a prediction routine that can asses the movement of Compatts on various strops lengths and widths and in various currents. This takes the guess work out of the expected deflection and allows computation of expected tracking and calibration performance.

12. LBL PlanningThe effects of Raybending Acoustic signals do not often travel in a straight line. Sound can be labelled as �lazy� as it tries to bend towards areas of lower sound speed. For instance, in deep water whereby the temperature and salinity has stabilised, the increased depth (pressure) causes the speed of sound to increase. This means that acoustic signals will bend up and away from the seabed so even if the Compatt geometry and line of sight looks good, the physics of the signal in the water may not allow the system to operate,Acoustic signals do not often travel in a straight line. Sound can be labelled as �lazy� as it tries to bend towards areas of lower sound speed. For instance, in deep water whereby the temperature and salinity has stabilised, the increased depth (pressure) causes the speed of sound to increase. This means that acoustic signals will bend up and away from the seabed so even if the Compatt geometry and line of sight looks good, the physics of the signal in the water may not allow the system to operate,

13. Performance ModellingOptimising a USBL Installation By manufacturing our equipment, we know the beam patterns, source levels, absorption, signal loss, etc and can therefore calculate system performance. We can also use this knowledge to asses the impact of tilting a transceiver and also what happens when you change a standard transceiver for a big head or even change the precision of the reference sensors.By manufacturing our equipment, we know the beam patterns, source levels, absorption, signal loss, etc and can therefore calculate system performance. We can also use this knowledge to asses the impact of tilting a transceiver and also what happens when you change a standard transceiver for a big head or even change the precision of the reference sensors.

14. Frequency PlanningOver 200 unique Wideband Signals Available Sonardyne Wideband offers over 200 non interfering channels. If everybody used wideband, there would be no requirement for frequency planning. However, there are still numbers of Sonardyne tone systems along with competitor systems that require management. There is a planning chart available on Sonardynes website entitled, �Frequency Planning using Sonardyne Wideband � User Guide� that provides a simple guidance to frequency planning. The Survey Support Group also offers frequency planning advise and can help you at all stages of the operation.Sonardyne Wideband offers over 200 non interfering channels. If everybody used wideband, there would be no requirement for frequency planning. However, there are still numbers of Sonardyne tone systems along with competitor systems that require management. There is a planning chart available on Sonardynes website entitled, �Frequency Planning using Sonardyne Wideband � User Guide� that provides a simple guidance to frequency planning. The Survey Support Group also offers frequency planning advise and can help you at all stages of the operation.

15. Remote Support from theSonardyne Survey Group What is the Survey Support Group Planning and Performance Modelling Equipment Optimisation Product Awareness Support Future Systems

16. Equipment OptimisationWhat is there to optimise? Digital technology � Sonardyne�s Wideband Choice of equipment - Type and features Equipment placement LBL - Arrays, Structure configuration, etc USBL - Deployment poles, tilted transceivers, iUSBL Sensors - Especially important for USBL systems Operation of the equipment - Calibration, Sim Ops With new equipment and sensors coming on the market all the time, the Survey Group can help you put all of this together to create a single optimised system.With new equipment and sensors coming on the market all the time, the Survey Group can help you put all of this together to create a single optimised system.

17. LBL OptimisationUltra Low Power (ULP) Wideband has previously been sold as multipath free. However, with Wideband being a much larger signal, in some cases it can suffer even more from multipath. The difference that distinguishes Wideband from tone is that the digital characteristics of Wideband enables the detection of both the direct signal, and that of multipath. With the correct setup and operation, multipath can easily be mitigated against.Wideband has previously been sold as multipath free. However, with Wideband being a much larger signal, in some cases it can suffer even more from multipath. The difference that distinguishes Wideband from tone is that the digital characteristics of Wideband enables the detection of both the direct signal, and that of multipath. With the correct setup and operation, multipath can easily be mitigated against.

18. USBL PerformanceWhat can be done? USBL relies on the physical mounting of the transceiver and the sensor data supplying pitch/roll and heading to get a fix. Although Sonardyne manufactures transceivers capable of better than 0.1% of slant range, most systems are degraded considerably with poor installations and sensors.USBL relies on the physical mounting of the transceiver and the sensor data supplying pitch/roll and heading to get a fix. Although Sonardyne manufactures transceivers capable of better than 0.1% of slant range, most systems are degraded considerably with poor installations and sensors.

19. USBL Deployment PolesWe can provide our own Sonardyne can provide both through hull and now over the side deployment poles optimised for mounting a USBL transceiver.Sonardyne can provide both through hull and now over the side deployment poles optimised for mounting a USBL transceiver.

20. Non Sonardyne Over The Side (OTS) PolesWe can still model it With the sufficient information, we can also assess your current pole and determine the achievable system accuracy.With the sufficient information, we can also assess your current pole and determine the achievable system accuracy.

21. USBL System Performance Tilting a transceiver For towfish tracking, many use a tilted transceiver. This does allow a larger signal reception from the transponder but also allows more noise from the vessel thrusters to enter the transceiver.For towfish tracking, many use a tilted transceiver. This does allow a larger signal reception from the transponder but also allows more noise from the vessel thrusters to enter the transceiver.

22. USBL System Performance Tilting a transceiver In some cases, a tilted transceiver can let in more vessel noise than the improvement in transponder signal reception resulting in decreased system performance. This is unlikely to happen with a big head transceiver. If you are thinking of using a tilted transceiver, get in touch with the Survey Support Group to provide you with some modelled performance predications.In some cases, a tilted transceiver can let in more vessel noise than the improvement in transponder signal reception resulting in decreased system performance. This is unlikely to happen with a big head transceiver. If you are thinking of using a tilted transceiver, get in touch with the Survey Support Group to provide you with some modelled performance predications.

23. CalibrationOvercoming Latency by Calibrating in the USBL Software Calibration of Attitude Sensors In the USBL System (CASIUS) Third party software should be avoided as access to raw data and timing is not possible and therefore sub optimum performance results. Sonardyne�s USBL routine (CASIUS) is now optimised to run in a windows environment. In fact, the latest Ranger USBL system has CASIUS incorporated into the software allowing data collection and processing to be done with three button presses. By conducting a calibration in the USBL system means that there is very little latency in the USBL range/bearing data and the pitch/roll/heading data. This optimises the system and those positioning �doughnuts� seen in 3rd party navigation/survey software when conducting spin checks will disappear.Sonardyne�s USBL routine (CASIUS) is now optimised to run in a windows environment. In fact, the latest Ranger USBL system has CASIUS incorporated into the software allowing data collection and processing to be done with three button presses. By conducting a calibration in the USBL system means that there is very little latency in the USBL range/bearing data and the pitch/roll/heading data. This optimises the system and those positioning �doughnuts� seen in 3rd party navigation/survey software when conducting spin checks will disappear.

24. Putting it all togetherThe Ultimate USBL By combining solid installations with good sensors and using Wideband, the results of a CASIUS calibration can almost meet the transceivers manufacturing accuracy of 0.1% of slant range.By combining solid installations with good sensors and using Wideband, the results of a CASIUS calibration can almost meet the transceivers manufacturing accuracy of 0.1% of slant range.

25. USBL System PerformanceAn Average Fix in Deep Water for such operations Looking at another real world scenario, this over the side pole was not rigid. The attitude sensor was therefore mounted alongside the transceiver which allowed compensation of the pole movement. During a average fix in over 2,000 meters water depth, the positioning spread was only just over one metre using Wideband (blue dots). Even in tone mode (red) the spread was still only three metres. Looking at another real world scenario, this over the side pole was not rigid. The attitude sensor was therefore mounted alongside the transceiver which allowed compensation of the pole movement. During a average fix in over 2,000 meters water depth, the positioning spread was only just over one metre using Wideband (blue dots). Even in tone mode (red) the spread was still only three metres.

26. Remote Support from theSonardyne Survey Group What is the Survey Support Group Planning and Performance Modelling Equipment Optimisation Product Awareness Support Future Systems

27. Manufacturers ProceduresWhite Papers Our freely available guidelines detail the best practice for the utilisation of Sonardyne equipment for various operating scenarios. Our freely available guidelines detail the best practice for the utilisation of Sonardyne equipment for various operating scenarios.

28. Spreading the wordWorkshops Our workshops are designed to inform everybody of new equipment, setup and results. This allows all companies to have an understanding of Sonardynes current technologies and there able to compete on a level playing ground. If there is any particular topic that you or your company would like to discuss, please let us know and the next time we are in your area, we can run a workshop just for you.Our workshops are designed to inform everybody of new equipment, setup and results. This allows all companies to have an understanding of Sonardynes current technologies and there able to compete on a level playing ground. If there is any particular topic that you or your company would like to discuss, please let us know and the next time we are in your area, we can run a workshop just for you.

29. Training and TrialsPlymouth Sea Trials Centre Our offshore trials and training centre in Plymouth (England) is well established. Book early for spaces as they can be often heavily booked. Our offshore trials and training centre in Plymouth (England) is well established. Book early for spaces as they can be often heavily booked.

30. Focussed Training and Field Specific GuidelinesTraining on the road Training at your office � onshore or offshore or at your local regional Sonardyne office Project Manger/Surveyor Training Client Rep Training Training for trainers Operator refresher courses Equipment training � the list goes on Alternatively, let the Survey Support Group come to you for dedicated training. We can run theory courses for project staff to help with planning and even operator refresher courses for those who have been through a full operator course.Alternatively, let the Survey Support Group come to you for dedicated training. We can run theory courses for project staff to help with planning and even operator refresher courses for those who have been through a full operator course.

31. New ProductsEquipment and Systems you should know about With new technology already in use in the field, are you up to speed with what they can do for you?With new technology already in use in the field, are you up to speed with what they can do for you?

32. New ProductsWe can even make tripods We even make tripods.We even make tripods.

33. New ProductsEnhancing our existing software By feeding back your comments, we can guide our in-house software team to improve existing software to closer meet your needs. This has been recently demonstrated with a new release of the Fusion LBL software. Watch out for the next release and give us your thoughts and they may well just be implemented.By feeding back your comments, we can guide our in-house software team to improve existing software to closer meet your needs. This has been recently demonstrated with a new release of the Fusion LBL software. Watch out for the next release and give us your thoughts and they may well just be implemented.

34. Remote Support from theSonardyne Survey Group What is the Survey Support Group Planning and Performance Modelling Equipment Optimisation Product Awareness Support Future Systems

35. Operational Support (Onshore & Offshore)Reducing Risk for Complex Operations Support for all aspects of your project from planning through to processing including: Equipment selection Concept analysis Frequency planning Simulation We continue to offer support offshore as we have in the past. Now we are better placed to provide you with the most experienced surveyor or engineer for your needs. But hopeful, our onshore support should reduce the requirement for costly offshore help.We continue to offer support offshore as we have in the past. Now we are better placed to provide you with the most experienced surveyor or engineer for your needs. But hopeful, our onshore support should reduce the requirement for costly offshore help.

36. Remote Support from theSonardyne Survey Group What is the Survey Support Group Planning and Performance Modelling Equipment Optimisation Product Awareness Support Future Systems

37. Interfacing into Engineering DepartmentNew Product Ideas And finally, what systems do you require that are not on the market yet? Maybe you don�t even realise the need for a new product. By sitting down at workshops and exhibitions and discussing your current and upcoming project requirements, the Survey Group can feed the Sonardyne engineering department to create new products and systems to make your project go all that more smoothly. And finally, what systems do you require that are not on the market yet? Maybe you don�t even realise the need for a new product. By sitting down at workshops and exhibitions and discussing your current and upcoming project requirements, the Survey Group can feed the Sonardyne engineering department to create new products and systems to make your project go all that more smoothly.

38. The Survey Support GroupSumming it Up The Survey Support Group is here to ensure support from the design and planning to installation through to operational help. Please don�t wait until it�s all gone wrong before you contact Sonardyne.Please don�t wait until it�s all gone wrong before you contact Sonardyne.