Changhua Phase 2 — 300 MW Offshore Wind Farm Export Cable Landfall
Bathymetry data shifted late in the cycle. Dimension redesigned the shore-pull strategy with a new HDD elevation and redeployment, and managed the TJB pull-in for three 161 kV export cables in 3 months in the challenging Taiwan landfall environment.
Updated bathymetry data arrived late in the programme with a substantial change to the seabed profile, breaking the original landfall plan. Dimension redesigned the entire shore-pull strategy, including a new HDD elevation and a redeployment of the float-out and barge configuration, then ran the TJB pull-in for three export cables in three months through the challenging Taiwan landfall environment — currents, monsoon weather windows and a tight intertidal zone.
As part of the wider TPC II contract, Dimension successfully completed the shore pull-in operation of three 161 kV export cables for the Changhua Phase 2 — 300 MW offshore wind farm. The scope for each export cable covered 850 m of cable float-out, an intermediate barge for HDD and cable handling, 700 m of pull-in through HDD, and the final pull-in inside the Transition Joint Bay (TJB) up to the land-cable termination.
| Parameter | Value |
|---|---|
| Export Cable Voltage | 161 kV |
| Export Cable Diameter | 280 mm |
| Export Cable Length | 22 km per cable |
| Number of Lines | 3 |
| Total Cable Weight | ≈ 8,700 tonnes |
Three successful export-cable shore pull-ins delivered without lost-time incident.
850 m cable float-out from CLV with intermediate barge handling — coordinated with HDD landfall provider.
Full TJB pull-in to land-cable termination with winch, sheave and roller spread engineered in-house.
Subcontractor management across survey, nearshore diving and MWS coordination.
Talk to our engineering team about feasibility, FEED, equipment supply or offshore execution support.
