Operation River Train

Oct 5

3 min read

3rd October 2026

“If you are slain, you shall attain heaven; if you conquer, you shall enjoy the earth. Therefore, arise, O son of Kunti, resolved to fight.”

EXECUTIVE SUMMARY

On 1st and 2nd October 2026, Banergy conducted an underwater and riverbed assessment near Maharajpur–Bandkhola, Jharkhand, following severe flooding and riverbank erosion along the Ganga.

Approximately 2 kilometres of land had been submerged, leaving the railway alignment surrounded by fast-moving water and significant depths. To assess the underwater environment and support ongoing protection efforts, Banergy deployed its BUSV-X Unmanned Surface Vessel (USV) equipped with sonar and underwater survey systems.

The operation provided critical underwater situational awareness of the affected railway corridor while keeping personnel safely on the surface.

MAIN ARTICLE

WHEN THE RIVER CAME FOR THE RAILWAY

Severe flooding and riverbank erosion along the Ganga had dramatically altered the landscape around the railway alignment near Maharajpur–Bandkhola, Jharkhand. Approximately 2 kilometres of land had been submerged, leaving the railway infrastructure surrounded by water and exposed to a rapidly changing river environment.

The situation was further complicated by high-speed currents and significant water depths across the affected stretch. With the river continuing to reshape the submerged terrain, the condition of the area could no longer be understood from the visible shoreline alone.

Protection and restoration work was already underway. But with a large portion of the affected landscape now beneath the waterline, there was a critical gap in understanding what was happening around the railway alignment below the surface.

The assessment therefore focused on the underwater condition of the railway alignment and its adjoining riverbed, particularly around the eroded bank and the areas where protection measures were being carried out.

INTO THE CURRENT

The conditions made conventional inspection difficult. Fast-moving water and significant depths created an environment where putting personnel directly into the affected area was neither practical nor necessary.

Banergy deployed the BUSV-X into the current. Equipped with Banergy's sonar and underwater survey systems, the unmanned surface vessel was operated across the affected stretch to examine the underwater environment adjoining the railway alignment. Operators remained safely on the surface while the platform collected sonar-based information from beneath the waterline.

The deployment allowed the team to access areas that had become difficult to inspect following the flooding, without exposing personnel to the strongest currents or requiring them to enter the submerged environment.

The objective was not simply to collect measurements, but to build a clearer understanding of the terrain surrounding the affected infrastructure.

WHAT THE WATER WAS HIDING

From the surface, the extent of the flooding and erosion was evident. Beneath it, however, lay an environment that could not be assessed through visual observation alone.

Using sonar-based survey technology, the BUSV-X provided an underwater view of the riverbed adjoining the railway alignment and the areas surrounding the ongoing protection works. This helped establish a more complete picture of the submerged terrain and its relationship with the affected bank and infrastructure.

The underwater assessment complemented the work already being carried out on the surface. By bringing together what could be observed above the waterline with information collected beneath it, the teams gained a broader understanding of the conditions surrounding the railway alignment.

For infrastructure positioned alongside an active river system, that distinction matters. Erosion may begin at the visible bank, but its effects continue beneath the water.

HOLDING THE LINE

Operation River Train demonstrates how unmanned marine systems can support the assessment and protection of critical infrastructure in environments where conventional inspection becomes increasingly difficult.

The BUSV-X enabled Banergy to conduct an organised underwater survey in a flooded, high-current environment while keeping operators safely on the surface. The operation brought sonar-based situational awareness to an area where approximately two kilometres of surrounding land had disappeared beneath the river.

For Banergy, the deployment represents another practical application of indigenous marine robotics — extending beyond search and recovery into critical infrastructure monitoring, river engineering and disaster-response support.

When the river changes the landscape above the water, understanding what has changed beneath it becomes just as important.