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Still-Water & Wave Bending Moment

Inside this lesson
  • Define still-water bending moment (SWBM) and wave-induced bending moment (WBM)
  • Apply superposition: total moment = SWBM + WBM
  • Explain how a single wave cycle can swing the hull from sagging through still water to hogging
  • Use the simulator to watch the amidships bending moment and deck stress change as the wave phase moves

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⚖️
Educational content covering topics typical of a first- and second-year marine engineering / naval architecture curriculum. Not a substitute for accredited coursework, and not suitable for real vessel design, operation, or safety decisions without review by a licensed professional engineer. References to classification societies, SOLAS, or MARPOL are descriptive context only, not compliance guidance.