SubCtech ESS Revolutionizes Onshore, Offshore Power
SubCtech’s Li-Ion Energy Storage Systems deliver clean, reliable subsea energy, powering ROVs, AUVs, and subsea infrastructure — reducing CO₂ emissions and OPEX for sustainable marine operations. Designed for longevity and safety in harsh offshore environments. The safe way to cut costs.
Sea Vorian Expands SEA360 Fleet with Teledyne Gavia AUV
Teledyne Marine announced the purchase and delivery of a Gavia Autonomous Underwater Vehicle (AUV) to one of the subsidiaries of the Sea Vorian group, SEA360, located in Caudan, France. With this investment, SEA360 will be able to provide geophysical surveys, cable and subsea infrastructure inspection, environmental studies and become a European provider for underwater data collection and analysis.The newly acquired Teledyne Gavia AUV is equipped with advanced technologies, including the EdgeTech 2205 sonar, with bathymetric and gap-filling module, EXail PHINS C3 Inertial Navigation System (INS)
OEG Unveils Geometry Assurance Software for Ships and Subsea Vessels
calibration, and a GNSS position verification. OEG provides a two-day training course to equip dimensional control teams with the knowledge and confidence to maximize its capabilities."Offshore operations that rely on precise positioning, whether for geophysical surveying or installing subsea infrastructure like cables and wind turbines, depend on accurate vessel dimensional control surveys. These appraisals use advanced metrology techniques, including offset calculation, sensor alignment calibration, vessel antenna alignment, and node position verification, ensuring millimeter-precision measurements
DeepOcean Signs Subsea Cable O&M Deals for Vattenfall’s Offshore Wind Assets
opportunity to support Vattenfall’s generation of renewable energy through this framework agreements. We have over 25 years’ experience in subsea installation and Inspection, Maintenance and Repair (IMR) work. We look forward to applying our specialist expertise to Vattenfall’s subsea infrastructure,” said Øyvind Mikaelsen, CEO of DeepOcean.A first call-off under the frame agreement structure has been executed for an O&M work scope at a European offshore wind farm.DeepOcean mobilized the subsea vessel Olympic Ares, which was converted with cable lay equipment and a jet
Sonardyne Introduces New Hybrid Acoustic-Inertial Navigator
wind operations, where its compact FOG-based IMU provides continuous, high-accuracy position, orientation, and velocity data even when operating in and around steel structures. This capability enables operators to conduct thorough inspections of wind turbine foundations, cables, and other subsea infrastructure without the interference issues common to magnetic-based systems
Building AI’s Subsea Cable Infrastructure
of up to 7,000 meters. Enhanced burial techniques will be used in high-risk fault areas such as shallow waters near the coast, to avoid damage from ship anchors and other hazards.In the Jan/Feb issue of Marine Technology Reporter, Alisa Reiner explains why risk mitigation is so important: “Subsea infrastructure is increasingly threatened by activities that fall within the realm of plausibly deniable, sub-threshold operations.”She notes that the South China Sea and the Red Sea have been identified as chokepoints for undersea cables. In March 2024, several major cables in the Red Sea were cut
New UXO Removal Contractor Enters Offshore Renewables Market
renewables market, we are continuing our commitment to supporting the energy transition whilst safeguarding the marine environment.“Together, the PG Renewables team has a demonstrative track record of success in the UXO space, having successfully completed more than 10 wind farm and five subsea infrastructure projects to date without incident,” said Henry Keane, director at PG Renewables.“I am delighted to be part of the PG Renewables team. Having personally completed the mitigation of almost 2000 pieces of UXO using innovative high order, low order and unique remote ordnance lifting
Private Sector to Help Protect Subsea Cables in Europe
The US and Norway have agreed on further steps to increase the security of subsea infrastructure including better involvement of the private sector.The US and Nordic-Baltic countries, including Norway, have agreed to:• Harmonize and develop channels and procedures for sharing real-time situational awareness and incident information within national governments, across allies, and between public and private sector stakeholders, including incorporating private sector disruption notifications• Identify opportunities for public-private partnerships to improve repair and maintenance fleet capacity
New Autonomous Subsea Survey System
of demand for – a fully integrated system to autonomously survey subsea assets," said Christian Thomsen, CEO, EIVA."By combining a USV, like our ProZero, together with EIVA’s ROTV sensor platform and survey software, it’s possible to monitor the conditions of critical subsea infrastructure much more thoroughly and frequently than with conventional setups," said Managing Director Jonas Pedersen from Tuco Marine.Image courtesy EIVAEIVA’s sensor platform ScanFish is among the most used solutions worldwide for UXO surveys, while its ViperFish, launched in 2023, is designed
February 2025
