ST 405 STABILITY OF
Introduction :
Potential energy and equilibrium; Stability of ships stable and
unstable conditions (including submerged vessels); Stability terms;
Equivolume inclinations shift of C.O.B. due to inclinations, C.O.B
curve in lateral plane, metacentre, prometacentre and metacentric
radius, metacentric height, metacentric curve, surface of
flotation, curve of flotation, righting moment and lever; Moments
due to wind, shift of cargo, passengers, turning and nonsymmetrical
accumulation of ice; Effect of superstructure on
stabilityTransverse stability: Form and weight stability stability
functionsa) Initial stability b) GM0, GZ at small angles of
inclinations, c) wall sided ships; d) Stability due to addition,
removal and transference (horizontal, lateral and vertical) of
weight, suspended weight and e) free surface of liquids; f)
Stability while docking and grounding; Inclining experiment.b)
Large angle stability Diagram of statical stability (GZcurve),
characteristic of GZcurve, static equilibrium criteria; Methods for
calculating the GZcurve (Krylov, Prohaska, etc.); Cross curves of
stability; Dynamical stability diagram of dynamical stability,
dynamical stability criteria.Longitudinal stability trim,
longitudinal metacentre, longitudinal centre of flotation, moment
to change trim, trimming moment; trim calculations addition,
removal and transference of weight, change of density of
waterDamage stability deterministic and probabilistic approach.
Stability in waves.Recommendations of classification societies and
governmental authorities Intact and damage stability rules.
Practicals: Cross curves of stability and Diagram of statical
stability (Kryloffs method); Floodable length calculations
Reference:
6. Lewis,E.U.; Principles of Naval Architecture, (2nd Rev.),
SNAME, New Jersey, U.S.A.7. Dynamics of Marine Vehicles
