Calculation of second EOS number for the ship arranged with non-cargo side tanks as referred to in regulation 13G(4) as per 4.2 of the IMO Guidelines (EOS2)
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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 second EOS number for the ship arranged with non-cargo side tanks as referred to in regulation 13G(4) as per 4.2 of the IMO Guidelines (EOS2)

Calculation of second EOS number for the ship arranged with non-cargo side tanks as referred to in regulation 13G(4) as per 4.2 of the IMO Guidelines (EOS2)

  .5 For the purpose of calculations, in the second EOS number (EOS2), the tanker is assumed to have side protection only as referred to in paragraph 4.2 of MEPC.64(36).

  .6 For the purpose of calculating EOS2, hypothetical side protection may be considered provided that the assumed positions of the longitudinal and transverse bulkheads provide at least the minimum side protection required by regulation 13G(4) and are placed in the locations which lead to the lowest EOS2.

For volumes and measurement of parameters, please refer to figure 1 below.

The remaining volumes of the tanks covered by hypothetical side protection are assumed to carry the same type of contents as before (i.e. water ballast tanks remain water ballast tanks and cargo oil tanks remain cargo oil tanks in remaining part).

The size of the remaining part of cargo oil and/or fuel oil tanks are as follows:

li = not modified
bi = reduced if hypothetical side protection is provided throughout the entire li. Not modified if hypothetical side protection is provided for partial li.
Vi = volume of cargo in the remaining cargo oil and/or fuel oil tanks

  .7 Draft and trim requirements of MARPOL, Annex I need not be taken into account for the purpose of calculating EOS2.

Refer to the annex.

  .8 When calculating EOS2, the ship is assumed even keel at the draft of the loaded condition corresponding to the ship so arranged to comply with regulation 13G(4) without any consumable nor ballast.

Refer to paragraph .6 and to the annex.

Figure 1 EOS2 - volumes and measurement of parameters

Parent topic: Annex - IACS Unified Interpretation MPC 7 - Hydrostatic Balance Loading
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