Marine survey services

Tender description

Marine geophysical, geotechnical and environmental route investigation surveys along ~170 km interconnector route between Wales and Republic of Ireland. Scope to include data acquisition, processing and reporting. Greenlink is developing an HVDC interconnector between the Republic of Ireland and the United Kingdom. This notice concerns the award of 1 contract for the marine geophysical, geotechnical and environmental route investigation surveys along interconnector route between Wales and Republic of Ireland. The survey shall be carried out in a designated corridor centred on the cable route. The corridor is expected to be around 500 m wide and the distance of the cable route is expected to be approximately 170 km. Though these figures are subject to variation. The route survey must provide a detailed mapping of the bathymetry, of the seabed surface including morphological and geological features and man-made-objects and of the sub-surface geology. The scope of the assignment will include the following: 1) Nearshore and offshore geophysical and hydrographic survey; 2) UXO survey; 3) Nearshore and offshore geotechnical investigations; 4) Nearshore and offshore benthic investigations; 5) Geotechnical boreholes.