Last month, we carried out an underwater bow thruster operation on a ferry in Stockholm, in the middle of winter. Snowfall and cold temperatures were part of the picture, but that’s nothing new for us. We’re used to working in all kinds of conditions, and with the right preparation, weather never has to be an obstacle.

This operation was planned well in advance, and was scheduled to take place during a planned break in the ferry’s timetable. That meant we could do the work without disrupting the vessel’s service unnecessarily and without the need for a drydock visit.

Planning ahead for a smooth operation 

From the start, we worked closely with the crew to make sure everything aligned with their operational planning. To prepare for the job, we mobilized a truck fully loaded with equipment from our office in Antwerp, while the rest of the team flew in separately. This approach allowed us to have all specialized tools on site while remaining flexible in how we deployed our personnel.

While one team prepared the underwater part of the job, the remainder handled internal preparations so that once we started, everything could move forward efficiently. Working this way allows us to adapt to the customer’s needs instead of forcing the vessel into a repair window that doesn’t fit its schedule.

A familiar operation, executed with confidence

We have been carrying out underwater bow thruster removals and installations on a regular basis for well over 30 years, so we know exactly what’s needed and how to execute them efficiently and safely.

“I can only say that I’m impressed by the work and the time schedule.”
– The customer’s Chief Officer

In Stockholm, after removing the tunnel grids, we disconnected and lifted out the existing bow thruster underwater. Instead of reinstalling the same unit, a new thruster was provided, while the removed unit was sent ashore for overhaul and refurbishment by the owner’s chosen service providers.

Because the thruster was fully assembled and prepared, it could be installed in its entirety without the need to create a dry environment in the tunnel as is required when the blades are fitted separately.

Once the new thruster was positioned in the tunnel, all connections were secured, the grids were reinstalled, and final checks confirmed everything was ready for operation.

From the vessel’s perspective, the process was well coordinated and controlled. As the chief officer later told us: “I can only say that I’m impressed by the work and the time schedule. The only delay we had was from our side when we had some issues removing the studs. For me this was a new experience.”

Delivering results in winter conditions

Snowy weather didn’t slow us down. Cold water, limited daylight, and logistical challenges are all part of the job, and we’re used to adapting as situations change. Our extensive experience helps us keep operations predictable.

This job is a good example of how careful planning, experience, and flexibility come together to deliver practical solutions, exactly when and where our customers need them.