The Republic of Türkiye, Ministry of Energy and Natural Resources invites eligible bidders to submit sealed bids for the "Non-Consulting Services for Geophysical & Geotechnical Ground Investigations in Türkiye (NCS-01)". This contract, funded by the World Bank under the EU IPA Phase-4 Offshore Wind Support Project, covers the provision of geophysical and geotechnical ground investigation services for designated potential offshore wind farm sites in the Marmara Sea. Bids must be delivered to the Directorate General of Foreign Relations in Ankara before April 16, 2026, at 14:00 (Local Time). Interested eligible bidders may obtain further information and inspect the bidding documents through the link below.