Thien An Expands Multi-Purpose Offshore Fleet to Support Offshore Wind and Transition Energies

Strategic fleet investments bringing DP2 dynamic positioning, active heave compensation, and multi-mission modular deck configurations to offshore wind and marine construction operations.

As Southeast Asia accelerates investments in nearshore and offshore renewable energy, marine contractors must expand capabilities beyond traditional oilfield logistics. The installation and maintenance of offshore wind turbines require specialized multi-role support vessels capable of station-keeping near fixed monopiles and jacket foundations in shallow to medium depths.

Thien An Offshore has initiated an ambitious fleet upgrading campaign, retrofitting existing platform supply vessels (PSVs) and commissioning modern anchor handling tug supply (AHTS) vessels tailored for regional sea states. These enhancements focus on fuel-efficient diesel-electric hybrid drive systems and expanded clear deck areas exceeding 800 square meters.

Hybrid Propulsion and Emissions Reduction

Equipped with variable-frequency drive thrusters and battery energy storage peak-shaving systems, the newly upgraded vessels achieve up to 22% fuel consumption savings during standby and station-keeping modes, directly reducing the carbon footprint of marine construction campaigns.

Precise subsea asset deployment requires advanced deck machinery capable of mitigating vessel roll and heave motion. The fleet flagship has been fitted with a 100-metric-ton knuckle boom subsea crane equipped with Active Heave Compensation (AHC), enabling subsea operations in depths down to 1,500 meters.

The vessel's dual-redundant DP2 dynamic positioning system integrates laser-based CyScan optical sensors and radar-based RadaScan references, guaranteeing seamless station holding within a one-meter footprint even during severe wind shifts and wave turbulence adjacent to offshore structures.