Full Scope Rudder Repair:
Repair of 40-tonne rudder blade and manufacturing of a new rudder stock
This significant repair project, which is currently in our workshop, involves a chemical tanker that suffered an incident, bending the rudder blade and requiring the renewal of the rudder stock and other essential rudder components.

Upon request, MarineShaft dispatched a service technician on-site to assess the damage and repair feasibility.

We could provide a full-package solution, offering both rudder blade repairs and manufacturing of a new rudder stock and related components.

Due to the size of the rudder blade - nearly 40 tonnes - the rudder blade was too large for road transport and was instead shipped from a European shipyard to MarineShaft by sea.

Precision Repair Using 3D Scanning

We used 3D scanning technology to assess the rudder blade’s deformation accurately. The repair will involve replacing specific plates and reinforcing the structure with welding.

The manufacturing process includes:

• Manufacturing of a new rudder stock.
• Manufacturing of a new pintle with shrunk-on sleeve.
• Manufacturing a new rudder stock bearing and housing.
• Manufacturing of a new pintle bearing and housing.

Based on our on-site measurements, we will machine and conduct a blue-fit test to ensure the rudder stock upper cone aligns perfectly with the steering gear in its original position. Along with the rudder blade, we also received the steering rotor for fitting.

We will conduct the final blue fitting to the new rudder stock, which will be supervised and approved by the involved Class NK.