ARIADNE

Ariadne is an Ulstein SX-121 design vessel built by Ulstein Verft AS in Norway and delivered in 2009, originally entering service as Viking Poseidon for subsea construction and IMR work. She was ordered by Eidesvik Offshore and spent her early career on an eight‑year charter to Veolia ES Special Services, including involvement in ROV operations during the Deepwater Horizon response in the Gulf of Mexico. In March 2017 the vessel was acquired by new owners, reflagged to Greece, renamed Ariadne, and her class was transferred from DNV‑GL to ABS; today she is registered to ASSO ARIADNE NAVIGATION CO LTD and commercially managed by ASSO MARINE SHIPPING CO. Technically, Ariadne is a 130‑meter DP‑3 cable laying vessel with an Ulstein X‑BOW hull, ABS class notation ABS A1, AMS, HELIDK, ACCU, DPS‑3, NBLES, ENVIRO, CRC(I), POT, HAB(WB), and accommodation for up to 106 persons with a helideck. She has undergone staged conversions, most recently in 2022, to install a permanent cable‑lay spread including a 5,000‑tonne above‑deck carousel, a below‑deck carousel, dual firing lines with tensioners meeting a 4 m minimum bend radius, and a work‑class ROV system. Market‑wise, Ariadne now operates as a DP‑3 multipurpose support and cable laying vessel focused on power cable installation projects worldwide. She is specially configured for offshore wind farm inter‑array and export cables, interconnectors, and cable protection and repair work, and has also been deployed on major subsea cable campaigns such as the Hudson River segments of the Champlain Hudson Power Express project in North America. Her combination of station‑keeping capability, heavy cable storage, and integrated ROV and subsea construction systems positions her for complex offshore wind and submarine power cable projects in harsh and congested marine environments.