Introduction
The Cross Over Rudder by Becker Marine Systems is a new rudder design aimed at enhancing manoeuvring and propulsion efficiency for merchant vessels. It integrates a rudder bulb and fairing cap to optimize performance.

Main Benefits

• Incorporates the new FEHC (Flow Efficient Hub Cap).
• Features an optimized rudder bulb without compromising manoeuvrability.
• Achieves up to 7% fuel savings due to efficient design.
• Improves course-keeping abilities.
• Eliminates propeller hub cavitation.
• Suitable for both newbuildings and retrofits, particularly for feeder vessels and ferries.
• Optional trailing edge flap available for enhanced manoeuvrability.

Design and Performance
The Cross Over Rudder combines Becker's expertise in aft ship optimization and energy-saving devices. The design includes a new fairing hub cap and rudder bulb, reducing fuel consumption by up to 3% and preventing cavitation. The rudder is optimized using Computational Fluid Dynamics (CFD) and can be adapted independently of the propeller manufacturer.

The rudder employs the Becker KSR support, allowing for slender shapes and high-lift capabilities with minimal drag. An optional trailing edge flap enhances manoeuvrability, making it ideal for feeder ships and ferries.

Extensive CFD studies and model tests have shown a 150% performance improvement over conventional rudders. The twisted leading edge reduces drag and fuel consumption by an additional 4%, aligning with the propeller's slipstream and preventing cavitation at angles up to 10°.

Monitoring Systems
Becker offers the Becker Intelligent Monitoring System (BIMS) and the optional Becker Bearing Monitoring System (BBMS) to monitor rudder force, drag, and wear on the neck bearing without dismounting the rudder.

Conclusion
The Cross Over Rudder enhances propulsion efficiency by up to 7%, improves manoeuvrability, and reduces dependency on harbour support services, making it suitable for challenging coastal areas and small harbours.