WIXLIB

Survey Support During Installation of Monopiles and Transition PiecesStian Waage, Business Development ManagerKristoffer Amdal, R&D Manager

Client list StatoilConoco PhillipsSubsea 7TechnipBibby offshoreGMC Maritime ASENIDeepOceanSeajacksJan De NulBoskalisFertoingKongsbergBPVARDKleven Verft07.04.2016 Aker SolutionsNational Oilwell VarcoSaipemOcean InstallerTDW Offshore ServicesEMAS AMC ASDOF SubseaAibel ASLundin Norway ASMMT ABMaerskPetrobras2

Services ProvidedDimensional ControlSubsea MetrologyVessel Sensor VerificationWindmill installationsurvey support3Position MonitoringSystemCharting and marineservices

What We DO312ReportingData Acquisition4/7/2016Data Processing6

Survey Support offshore windmill installation 7Javad GNSS antennaMRU 5OctansTotalstationPMS SoftwareRadio Link systemPersonnel

Survey Support offshore windmill installation Survey Software Real-Time Monitoringsoftware8

Survey Support offshore windmill installation Real time monitoring As installed report Final report9

Offshore wind mill installation - survey challengesThe challenges may be: Access Accuracy Position Inclination Orientation Automatic data transmitting Equipment Guiding Instant reporting Live / real-time monitoring Mobilization time Offshore surveying10 Safety

Monopile Installation Positioning Global position (GPS) Verticality (Total station) Elevation (GPS) Crane monitoring during uplift (Two total stations online) On line monitoring during piling With ParkerPMS Documentation Final report with position, elevation, roll and pitch11

Offshore windmill installation – TP - survey challengesOur solution had to meet these specifications:12Heading / Orientation:Better than 2,5 degreesRoll and pitch / Inclination:Better than 0,25 degreesJacking advice:To meet the specificationsReporting:Immediate report after ”set down” plus final reportLogging:Store all data to enable post processing if required

Offshore windmill installation – TP - survey challengesWe decided to use: GPS / Glonass for heading Glonass option added due to obstructions and demand for 100% continuous monitoring High precision inclinometer for roll / pitch (Inclination) (and heave) – we used MRU 5 Heave option added for post processing if unexpected heave occurred Later we added Gyro with motion sensor 2,4 Ghz radio link 2,4 Ghz does not require license ParkerPMS for data presentation and complete data logging In house software system adapted for the monitoring and reporting13

Offshore windmill installation – TP - survey challenges14

Offshore windmill installation – TP - survey challenges 15GPS equipment mounted onboard on top of TP before liftingInclinometer aligned on top of TP flange before liftingGyro and motion sensor aligned on top of TP flange before liftingRadio link mounted and communication to monitoring computer tested prior to lifting

Offshore windmill installation – TP - survey challenges 16Lifting startsSetting of TP on to mono-pile startsParker crew continuously advising to get the heading perfectParker crew continuously advising the jacking operation to get the inclination perfectAfter TP has been ”locked” a verification survey was performedFinal report issued

Offshore windmill installation – TP - survey challengesAchieved target17Heading / Orientation:Better than 0,5 degrees – (Better than 2,5 Degrees)Roll and pitch / Inclination:Better than 0,05 degrees (Better than 0,25 degrees)Reporting:Immediate report after ”set down” plus final reportLogging:Data stored. Post processing (heave check) required a fewtimes

Reporting & Real Time monitoringMonitoring, jacking assistance and reporting:Report exampleVESSEL / COMPANYCLIENTxxxxxxxxxxxxxLOCATIONOPERATION DATETransition Piece:xxxxxxxxxXX.XX.XXXXDESCRIPTIONTransition Piece AttitudeTransition Piece HeadingActual TP heading43.0º TrueTarget TP heading42.6º TrueIntended - Actual-0.4ºTransition Piece InclinationTP Inclination180.02ºTP Inclination Direction(relative to local North)158.83ºTP Pitch (local North uppositive)0.02ºTP Roll (local East downpositive)0.01º

Thank you !19

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13 We decided to use: GPS / Glonass for heading Glonass option added due to obstructions and demand for 100% continuous monitoring High precision inclinometer for roll / pitch (Inclination) (and heave) –we used MRU 5 Heave option added for post processing if unexpected heave occurred L