Calculation of base EOS number as per 4.1 of the IMO Guidelines (EOS1)
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Statutory Documents - IMO Publications and Documents - Circulars - Marine Environment Protection Committee - MEPC/Circular.365 – Interpretation of Requirements for Application of Hydrostatic Balance Loading in Cargo Tanks (Resolution MEPC.64(36)) – (Adopted 26 July 1999) - Annex - IACS Unified Interpretation MPC 7 - Hydrostatic Balance Loading - Calculation of base EOS number as per 4.1 of the IMO Guidelines (EOS1)

Calculation of base EOS number as per 4.1 of the IMO Guidelines (EOS1)

  .2 When calculating first EOS number (EOS1) as defined in 4.1 of the Guidelines, the ship is assumed to be loaded at Summer Water Line with zero trim, without consumable or ballast.

  .3 For the purpose of calculating EOS 1, the volume of the cargo being carried by the ship is 98% of the volume of cargo and fuel oil tanks within Lt as per the original configuration of the ship. Refer to the annex.

  .4 Nominal density of the cargo, ρc

The nominal density of the cargo to be used in the calculation of EOS1, EOS2 and EOS3 is given by the following formula:

where
Δ(summer) = Displacement of the ship corresponding to the maximum assigned summer load line with zero trim.
LSW = Light ship weight.
V 98% (original cargo and fuel oil tanks configuration within Lt) = 98% of the cargo and fuel oil tanks volume within Lt, in ship's original configuration.

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