As a Chief Engineer, how will you improve the efficiency of a rudder?

flowchart LR
    A[Assess current\nrudder performance] --> B[Upgrade to\nmodern autopilot]
    B --> C[Consider twist-flow\nrudder retrofit]
    C --> D[Train crew on\noptimum rudder use]
    D --> E[Maintain rudder\nsystem condition]
    E --> F[Document in SMS\nand verify gains]

• Primary action: Retrofit modern autopilot for better course control to minimize rudder resistance losses
• Design upgrade: Consider improved rudder blade design such as twist-flow rudder
• Hydrodynamic principle: Rudder effectiveness depends on water flow; excessive movements increase drag
• Regulatory driver: MEPC.1/Circ.683 recommends these measures under energy efficiency guidance
• Chief Engineer action: Assess, plan, implement, verify via sea trials, document in SMS