3.2 The model should comply with the following:
Clasification Society 2024 - Version 9.40
Statutory Documents - IMO Publications and Documents - Resolutions - Maritime Safety Committee - Resolution MSC.141(76) - Revised Model Test Method Under Resolution 14 of the 1995 SOLAS Conference - (adopted on 5 December 2002) - Annex - Revised Model Test Method - 3 Ship model - 3.2 The model should comply with the following:

3.2 The model should comply with the following:

  .1 the length between perpendiculars (LBP) should be at least 3 m or a length corresponding to a model scale of 1:40, whichever is greater, and the vertical extent up to at least 3 superstructure standard heights above the bulkhead (freeboard) deck;

  .2 hull thickness of flooded spaces should not exceed 4 mm;

  .3 in both intact and damaged conditions, the model should satisfy the correct displacement and draught marks (TA, TM, TF, port and starboard) with a maximum tolerance in any one draught mark of +2 mm. Draught marks forward and aft should be located as near FP and AP as practicable;

  .4 all damaged compartments and ro-ro spaces should be modelled with the correct surface and volume permeabilities (actual values and distributions) ensuring that floodwater mass and mass distribution are correctly represented;

  .5 the actual ship characteristics of motion should be modelled properly, paying particular attention to the intact GM tolerance and radii of gyration in roll and pitch motion. Both radii should be measured in air and be in the range of 0.35B to 0.4B for roll motion, and 0.2LOA to 0.25LOA for pitch motion;

  .6 main design features such as watertight bulkheads, air escapes, etc., above and below the bulkhead deck that can result in asymmetric flooding should be modelled properly as far as practicable, to represent the real situation. Ventilating and cross-flooding arrangements should be constructed to a minimum cross section of 500 mm2;

  .7 the shape of the damage opening at side should be as follows:

  • .1 trapezoidal profile with side at 15° slope to the vertical and the width at the design waterline defined according to SOLAS regulation II-1/8.4.1;

  • .2 isosceles triangular profile in the horizontal plane with the height equal to B/5 according to SOLAS regulation II-1/8.4.2. If side casings are fitted within B/5, the damaged length in way of the side casings should not be less than 25 mm;

  • .3 notwithstanding the provisions of subparagraphs .7.1 and .7.2 above, all compartments taken as damaged in calculating the worst damage case(s) referred to in paragraph 3.1 should be flooded in the model tests.

Parent topic: 3 Ship model
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