1 Introduction
Clasification Society 2024 - Version 9.40
Statutory Documents - IMO Publications and Documents - Circulars - Maritime Safety Committee - MSC.1/Circular.1195 – Guidelines for the Conduct of High-speed Craft Model Tests – (2 June 2006) - Annex - Guidelines for Model Testing - 1 Introduction

1 Introduction

  1.1 The exemption from the requirement to fit an inner bow door now incorporated in the 2000 HSC Code (paragraph 2.2.3.2.2) may be invoked if a craft can be shown to comply with certain residual stability criteria even if water accumulates on the vehicle deck(s) as a result of failure of the bow shell door. Model testing is one option for determining the quantity of water that accumulates.

  1.2 These Guidelines are intended to ensure that such model tests would be sufficient and adequate so that the exemption would be applied safely and consistently, and so that the safety of the craft would not be endangered.

  1.3 Terms used in these Guidelines are as defined in the 2000 HSC Code.

  1.4 The aim of the model tests is to determine the answers to two questions:

  • .1 whether waves reach the bow loading door; and, if so,

  • .2 what volume of water would accumulate.

  1.5 To meet these aims, the following is described in these Guidelines:

  • .1 the use of towed or self-propelled models;

  • .2 physical tests at heading increments of 45° relative to the waves at zero and at forward speed;

  • .3 tests to establish whether water reaches the bow openings, and if so tests to determine the amount of water that may accumulate; and

  • .4 direct measurement of the accumulated volume of water at the end of each test run, or determination of the volume by calculation from measurements of relative water level within the vehicle space.

Parent topic: Annex - Guidelines for Model Testing
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