Current constraints

• Offshore survey and inspection are constrained by support-vessel dependence, mobilisation cost, and limited time-on-task.
• Battery systems remain highly effective in short-duration roles, but become harder to handle at larger form factors and high-utilisation offshore duty cycles.
• Repeated deck recovery, wet/dry handling, and charging logistics can interrupt useful data collection and increase operational disturbance.
• Environmental decision-making during decommissioning benefits from repeatable information over longer windows, not just short episodic campaigns.

Andrasta operational approach

• Hydrogen-electric vessel architecture designed around hydride-focused storage and practical remote replenishment.
• Waypoint-based missions, patrol patterns, linger modes, and recovery planning using commercially deployed vessel autonomy features where appropriate.
• Modular vessel form factors and mission payload families for environmental survey, hull inspection, and persistent monitoring workflows.
• Operational emphasis on time-on-task, asset utilisation, reduced support-vessel dependence, and useful evidence for offshore decision-making.

Plan and deploy

Missions are structured around decommissioning survey, hull inspection, or environmental monitoring objectives before deployment method and payload configuration are selected.

Survey, patrol, or linger

Waypoint-based mission logic supports repeatable transects, patrol patterns, station-keeping windows, and longer observation periods where decision-quality data matters.

Recover, replenish, redeploy

Hydride-focused remote replenishment is intended to reduce the friction of repeated deck recovery and improve practical asset utilisation over multiple mission windows.

Decommissioning environmental survey

Longer time-on-task and repeatable mission logic can support baseline survey data, works-phase observation, and post-works assurance without continuous support-vessel dependence.

Ad hoc hull inspection

Low-disturbance operation with acoustic or camera-capable payloads can support targeted inspection planning and anomaly review without claiming class-approved inspection capability at this stage.