1. Shallow Water (KP0.0-KP31.5) Pre-Lay Survey Scope Of Work

(Before Pipelay) Installation corridor: +/-10m corridor Hight precision survey centered on the theorical route by MBES&SSS (full coverage) + SBP at the Central line Anchor corridor: +/-750 m corridor centered on theoretical route By SSS (full coverage) and MBES (survey line to be defined by SUB-CONSTRACTOR) Deliverable: ASCII file DTM, Reports, Charts, GIS and JSON database

2. Shore Pull / NWS & Pluto Survey / As-Laid & As-built Surveys (KP 0 -10) / backup TDM (During pipelay) -Topographic survey by land surveyor with RTK or Drone from 0.5m WD (KP0.029) to +6m elevation. -Small Visual inspection class ROV mounted MBES dual head along installed pipeline with a maximum ROV survey speed less than 0.26 m/s (0.5 knots) +GVI where feasible ROV GVI to confirm pipeline condition + Cathodic protection GVI survey. Deliverable: ASCII file DTM, Reports, Charts, GIS and JSON database

3. Backup TDM (During Pipelay) Supply of vessel equipped with MBES, USBL and throw over ROV as a TDM backup survey vessel

4. As-Laid & As-built Surveys (KP 10-31.5) (After pipelay) -Small Visual inspection class ROV mounted MBES dual head along installed pipeline with a maximum ROV survey speed less than 0.26 m/s (0.5 knots) +GVI where feasible ROV GVI to confirm pipeline condition + Cathodic protection GVI survey. Deliverable: ASCII file DTM, Reports, Charts, GIS and JSON database

5. As-Laid & As-built Surveys (KP 31.5-40) (After pipelay) -Small Visual inspection class ROV mounted MBES dual head along installed pipeline with a maximum ROV survey speed less than 0.26 m/s (0.5 knots) +GVI where feasible ROV GVI to confirm pipeline condition + Cathodic protection GVI survey. Deliverable: ASCII file DTM, Reports, Charts, GIS and JSON database