Naval Architecture I

At the end of this course, the students should be able to: 1. employ numerical techniques to estimate ship geometry and size; 2. determine and draw hydrodynamic curves; 3. calculate stability parameters of marine vessels; 4. perform inclining experiment of any floating marine vessel; and 5. analyse free-surface effect and the effect of loading on stability.

Ship’s principal terms, geometry and hydrostatic calculation: ships lines, coefficients of form, wetted surface area, volumes, moments, displacement, tonnes per cm immersion and Bonjean curves. Simpson’s rules, application to area, moments and volume calculations. Trapezoidal rule, mean and mid-ordinate rule, Tchebycheff’s rule and their applications. Transverse stability of ships: Statical stability at small and large angles of heel, angle of loll; stability of a wall sided ship. Inclining experiment. Calculation of GM, BM, GZ and KM. Curves of statical stability and dynamical stability Determination of: Free surface effect. Centers of Buoyancy, and floatation. Centre of gravity: Effects of shifting, addition and removal of masses and of suspended masses. Trim: change in trim and draughts. Statutory Regulations; classification societies requirements; IMO Regulations.