Subsea cable sector activity increased significantly in November 2025 due to offshore wind projects, vessel innovations and strategic fleet expansions. These developments highlight maritime industries critical role in supporting global energy transitions and digital connectivity.
SEKIKAIJI Unveils an Advanced Trencher and Cable Tracker on Japanese Market
SEKIKAIJI unveiled on November 12th 2025 its SMD Trencher and advanced Cable-Tracker technology designed for Japanese offshore wind market, providing enhanced burial and protection of subsea power cables in challenging seabed conditions. This move aimed to strengthen burial capabilities for subsea power cables as they traverse harsh seabed conditions.
Japans expanding offshore wind sector presents key needs that this technology addresses efficiently; industry observers see this development as timely amidst growing regional investments in renewable energy infrastructure.
SupraMarine Consortium Announces Superconducting Cable Project
On November 7, 2025, The SupraMarine Consortium unveiled plans to initiate a project linking offshore wind farms with terrestrial locations via superconducting subsea cable system - in an effort aimed at minimizing transmission losses and increasing efficiency for large-scale offshore renewables.
Superconducting technology represents an innovative breakthrough in subsea power transmission, potentially revolutionizing how offshore wind energy is delivered to shore-based grids. The project fits with wider European and Asian efforts to increase renewable integration.
Asso.subsea Celebrates Steel Cutting for New DP-2 Cable Laying Vessel
Asso.subsea marked an important moment on November 5, 2025 with its steel cutting ceremony for their new DP-2 cable laying vessel. Built specifically to bolster Asso.subseas capacity in installing power and telecom cables worldwide, this vessel will help set a precedent.
This event highlights continued investments in specialized maritime assets to meet increasing subsea infrastructure demands. The DP-2 class ensures improved stability and safety during complex offshore deployments.
Pharos Offshore Expands Jet Trenching Fleet
Pharos Offshore Group recently expanded their jet trenching fleet by purchasing a 620hp TROV, providing post-lay burial services for subsea cables buried underwater such as offshore wind farms and interconnectors.
TROV improves our group's capability of handling demanding seabed conditions, supporting timely project completion across international waters.
Fulan Offshore Completes Cable Installation in China
Fulan Offshore successfully completed subsea cable installation for an offshore wind development in China on October 31, 2025, signalling its increasing commitment to renewable energies. This project shows Chinas fast track energy development.
Fulan Offshores' expertise in Asian waters was proven with this completion, contributing to national goals of expanding clean energy.
At Inch Cape Offshore Wind Farm, the first export cable installation was successfully completed.
On October 24, 2025, the first offshore export cable was installed at Inch Cape wind farm to expand UK renewable capacity and pave the way for full operational readiness.
Installation success showcases effective maritime coordination within Scotlands offshore sector.
Jan De Nul Launches World's Largest Cable-Laying Vessel
Jan De Nul launched the worlds largest cable-laying vessel on October 22, 2025. This vessel sets new benchmarks in capacity and reach for subsea power cable projects worldwide.
Jan De Nul's flagship addition solidifies their position at the forefront of offshore grid development, capable of managing ultra-high voltage direct current systems.
Europe Unveils Major HVDC Interconnector
An EUR1.6 billion subsea cable project between Spain and France announced around early November 2025 will almost double power flow and enhance Europes renewable network. Led by RTE, TenneT, and Terna it supports unified offshore grids.
Prysmian and Nexans have recently expanded their offshore energy operations, as seen by activities recorded as recently as late October 2025.
Events from late October to mid-November 2025 show the vital role subsea cables play in maritime trade, energy security and technological progress. The industry continues to advance through targeted investments in vessels, tools and projects.