Meridian Subsea operates a dedicated fleet of cable repair vessels on permanent standby across the North Atlantic and European waters — locating, recovering, and splicing submarine fibre-optic systems in any season, at any depth.
The Fleet
Purpose-built cable ships stationed in Rotterdam, Halifax, and Esbjerg — each crewed year-round and held at repair readiness under our standing maintenance agreements.
Deep-water repair vessel holding the NAZ-1 standby contract. Two work-class ROVs and full jointing suite for repairs from the continental shelf to abyssal plain.
Configured for full-ocean-depth work: detrenching grapnels rated to 8,000 m and a 6,000 m ROV spread for faults beyond the reach of conventional tooling.
Ice-class vessel for landings, shelf repairs, and post-repair burial. Carries the MT-3 jet trencher for reburial to 3 m in sands and clays.
Cable Health
Live line-monitoring telemetry from the six systems covered by our standing agreements. Round-trip latency is measured terminal-to-terminal; figures refresh continuously from shore-station instrumentation.
| System | Route length | Capacity | RTT latency | Last survey | Status |
|---|---|---|---|---|---|
| MERIDIAN NORTHRotterdam ↔ Halifax | 5,140 km | 224 Tbps | 46.8 ms | 2026-05-14 | OPERATIONAL |
| AEGIR-1Esbjerg ↔ Reykjavík | 1,880 km | 108 Tbps | 18.3 ms | 2026-06-02 | OPERATIONAL |
| CELTIC GATECork ↔ Bilbao | 1,290 km | 96 Tbps | 14.1 ms | 2026-06-21 | DEGRADED · SEG 4 |
| LUSITANIA EXPRESSLisbon ↔ Fortaleza | 5,860 km | 160 Tbps | 63.5 ms | 2026-04-30 | REPAIR IN PROGRESS |
| BALTIC SPURRotterdam ↔ Gdańsk | 1,120 km | 72 Tbps | 11.6 ms | 2026-06-27 | OPERATIONAL |
| MERIDIAN SOUTHMarseille ↔ Alexandria | 2,740 km | 184 Tbps | 27.9 ms | 2026-05-28 | OPERATIONAL |
Incident Response
A representative deep-water repair under our standing agreements. Clocks start the moment shore-station monitoring raises the alarm.
Automated line monitoring flags a drop in line current and optical loss. Ops Rotterdam confirms with both terminal stations and opens an incident.
Electroding and coherent OTDR measurements from each shore end triangulate the fault to within a few hundred metres of kilometre post 1842.
Nearest standby vessel loads spare cable and joint kits, files clearances, and sails. Average mobilisation across our zone: 22 hours.
DP2 hold over the fault. In ROV depths the cable is cut and recovered by manipulator; beyond 3,000 m we detrench and lift with grapnels.
Both ends brought to the jointing room; a universal joint splices in spare cable. Full optical and electrical acceptance tests run end-to-end with the terminal stations before lay-down.
In trawled or anchored waters the repair bight is jetted back below the seabed, and the as-laid route data is issued to the owner and charting authorities.
The owner confirms restoration, the incident closes, and the vessel returns to standby. Median alarm-to-restoration on deep-water repairs in 2025: 6.4 days.
Careers
We sail with permanent crews on even-time rotations, and we train our own jointers and ROV pilots. Current openings across the fleet and Rotterdam operations:
No current opening that fits? We keep a standing register of certified jointers, DPOs, and trenching engineers — write to crewing@meridiansubsea.example.
Contact
For active cable faults, call the emergency line — it is answered by a duty marine coordinator in Rotterdam, every hour of every day.
Or e-mail ops@meridiansubsea.example — monitored continuously, 30-minute acknowledgement guaranteed under SLA.