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3 Ιαν 2021 · The easiest and handiest tool for analysing a surface ship’s stability, is by graphs or curves. A ship designer or an officer on-board should be able to know the stability characteristics of a ship just by looking at the curves.
5 Απρ 2021 · The next article will discuss the basic concepts of ship stability which includes an introduction to intact stability and damaged stability, with detailed understanding of evaluation of intact stability of a ship along with various cases that affect the same.
Read, interpret, and sketch a Curve of Intact Statical Stability (or Righting Arm Curve) and draw the sectional vector diagram of forces that corresponds to any point along the curve.
Contents. General particulars. Plan showing cargo spaces, storerooms and tanks. Cargo and tank capacities. Hydrostatic particulars. Tabulated KN values. Maximum KG values. Angle of Heel data. Grain: Full holds and full tween decks, Volumetric Heeling Moments (VHM).
The light ship value includes weights for spare tailshaft and stowage as given on Sheet 81B ([12821 + 29]/100 = 128.50). Add lines 28 and 29 to obtain line 30 displacement and hogging and sagging numerals for departure and arrival conditions.
To perform this calculation, you will need to input the cross curves of stability (KN) and the vertical center of gravity corrected for free surfaces. While not mandatory, you can also include the downflooding angle, which impacts the tool's results only if it falls below 40 degrees.
In Chapter 4 we will study five areas: The concept of a ship’s Righting Moment (RM), the chief measure of stability. KG and TCG changes and their effects on RM. How Stability is effected by Damage to the Hull using the “Added Weight” method. Effects of a “Free Surface”. Effects of Negative GM on ship stability.
