Naval Architecture

Float, move and survive the sea. Hydrostatics and stability, resistance and powering, beam bending theory and the ship hull girder with seakeeping.

• Ship Hydrostatics & Stability — Why ships float upright — and when they don't. Learn Archimedes' principle, centres of buoyancy (B) and gravity (G), metacentre (M) and metacentric height GM, KB and BM for simple forms, the righting arm GZ and GZ curve, wall-sided formula, free-surface effect, inclining experiment, loading and weight shifts, trim and longitudinal stability, damage stability and IMO criteria — with Python for GM, GZ and free-surface correction.
• Ship Resistance & Powering — How much power a ship needs. Learn resistance components (frictional, form, wave-making, air, appendages), Froude's hypothesis and model testing, the ITTC-1957 friction line, form factor, wave-making and the Froude number, effective power, the propulsive chain (hull, propeller, relative-rotative, shaft efficiencies), the Admiralty coefficient and cube law, slow steaming, fouling and hull coatings — with Python estimating resistance and brake power.
• Bending — Bending creates tension on one side of a beam and compression on the other. Learn the flexure formula σ = My/I, neutral axis, section modulus, beam selection and combined bending and axial load.
• Ship Structures & Seakeeping — Keeping the hull in one piece and the ship comfortable at sea. Learn longitudinal strength (still-water and wave bending, hogging and sagging), hull girder section modulus and stresses, IACS rules, framing systems and structural members, local strength and buckling, fatigue and corrosion, materials and welding, ship motions in waves (six degrees of freedom), natural roll period, response amplitude operators, slamming and green water, roll stabilisation — with Python for hull girder stress and roll period.