Hydrone-R completes autonomous coral survey at Norway's Njord field

Saipem's Hydrone-R underwater drone has completed an autonomous survey in the Arctic coral area at the Njord field in Norway. Announced on 6 February 2026, the mission was carried out without a connecting cable or surface support. The event concerns a specific autonomous survey within the drone's wider subsea operating programme. It does not mean that every mission completed during its residence at Njord was autonomous or that surface infrastructure has become unnecessary for all subsea activities.

Hydrone-R operates under a ten-year contract awarded by Equinor in 2019. Its work supports inspection and intervention on subsea assets, including information relevant to hazards and infrastructure integrity. Saipem reported more than 500 days of subsea residency, including remotely operated missions, with one continuous period of 240 days. These figures describe residence below the surface and should not be relabelled as uninterrupted autonomous operation throughout those periods.

The company also reports hundreds of missions at Njord without support vessels. In a separate example from the end of 2025, the drone assisted with well commissioning during waves reaching 12.5 metres. Saipem said conventional work-class remotely operated vehicles could not operate in those particular conditions. The example illustrates a reported operating case; it does not establish an unlimited weather capability or guarantee that the drone can undertake every task during similar sea states.

EPC Feed sees the survey as evidence of a specific application for resident subsea equipment: gathering environmental information while working near an operating field. Residence, autonomy and remote control describe different aspects of such a system. Preserving those distinctions helps explain what was demonstrated without turning cumulative deployment statistics into a claim about the control mode used on every mission. The coral survey is the identified autonomous event in this announcement.

The release links resident operations to reduced dependence on support vessels, but it does not quantify avoided fuel consumption or emissions. No numerical environmental saving is therefore assigned to the mission. Future disclosures covering inspection results, intervention scope and the operating conditions for individual tasks would provide a clearer basis for comparing delivery approaches. For now, the recorded milestone is the completed cable-free coral survey, supported by separately attributed information about the drone's longer service at Njord.

Sources

1. Saipem’s underwater drone Hydrone-R performs autonomous mission in the Arctic coral area in NorwayCompany releaseSaipemPublished 6 February 2026Read 28 October 2026

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