Solutions

Subsea Jointing

Subsea Cable Joint Box and Mechanical Protection System
Subsea Power Cable Jointing and Installation
Subsea Cable Jointing Operation on Vessel Deck

Subsea Jointing – Subsea Cable Jointing Systems

GateMarine delivers Subsea Jointing solutions for subsea fiber optic and power cables, recognizing cable joints as one of the most critical components of long-term system reliability. In subsea cable systems, joint locations play a decisive role in mechanical integrity, electrical or optical performance, and operational continuity.

Subsea Jointing activities at GateMarine are conducted through an integrated approach covering engineering design, offshore execution, quality control, and long-term performance considerations. All jointing solutions are developed specifically for project conditions and subsea environmental challenges.

Engineering-Driven Subsea Jointing Approach

Subsea cable jointing systems are not merely mechanical connections; they require the combined integrity of electrical, optical, and structural performance. GateMarine evaluates cable type, operating voltage, water depth, seabed conditions, and environmental loads during joint design.

Through this approach, joint locations are transformed from potential weak points into controlled and reliable components of the subsea cable system.

Subsea Fiber Optic Cable Jointing Systems

GateMarine provides high-reliability jointing solutions for subsea fiber optic cables. Fiber optic jointing systems are implemented to minimize optical losses while ensuring mechanical protection and long-term watertight integrity.

These solutions support uninterrupted data transmission and stable optical performance in demanding subsea environments.

Subsea Power Cable Jointing Solutions

For subsea power cables, jointing solutions are developed considering medium voltage levels, thermal loads, and mechanical stresses. GateMarine evaluates electrical insulation, mechanical strength, and environmental protection as an integrated system.

These jointing solutions support the safe operation and long-term performance of subsea power transmission infrastructure.

Offshore Execution and System Integration

Subsea Jointing operations are executed in coordination with cable installation, maintenance, and repair activities. Jointing procedures are planned based on cable positioning, burial conditions, and operational constraints.

GateMarine applies controlled offshore procedures and verifiable execution steps to ensure post-installation safety and traceability of joint locations.

Quality, Testing, and Long-Term Reliability

All Subsea Jointing solutions are verified through pre- and post-installation inspections. Joint integrity, sealing performance, and system compatibility are assessed against defined acceptance criteria.

GateMarine approaches Subsea Jointing not merely as an offshore operation, but as a strategic engineering process ensuring the long-term reliability of subsea cable systems.