International Code on Intact Stability, 2008 (2008 IS Code), 2009 Edition (IB874E)

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Published Date

September 2009


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International Code on Intact Stability, 2008 (2008 IS Code), 2009 Edition (IB874E)

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The International Code on Intact Stability 2008 (2008 IS Code), presents mandatory and recommendatory stability criteria and other measures for ensuring the safe operation of ships, to minimize the risk to such ships, to the personnel on board and to the environment. The Code should be of interest to maritime administrations, ship manufacturers, shipping companies, education institutes and others concerned with stability criteria.

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The 2008 IS Code features:

  • A full updated of the previous IS Code

  • Criteria based on the best state-of-the-art concepts available at the time they were developed, taking into account sound design and engineering principles and experience gained from operating ships

  • Influences on intact stability such as the dead ship condition, wind on ships with large windage area, rolling characteristics and severe seas.

This publication also presents Explanatory Notes to the 2008 IS Code, intended to provide Administrations and the shipping industry with specific guidance to assist in the uniform interpretation and application of the intact stability requirements of the 2008 IS Code.

Resolution MSC.267(85) (adopted on 4 December 2008)

 

Preamble

 

Introduction

1 Purpose

2 Definitions

 

Part A – Mandatory criteria

 

Chapter 1 – General

1.1 Application

1.2 Dynamic stability phenomena in waves

 

Chapter 2 – General criteria

2.1 General

2.2 Criteria regarding righting lever curve properties

2.3 Severe wind and rolling criterion (weather criterion)

 

Chapter 3 – Special criteria for certain types of ships

3.1 Passenger ships

3.2 Oil tankers of 5,000 tonnes deadweight and above

3.3 Cargo ships carrying timber deck cargoes

3.4 Cargo ships carrying grain in bulk

3.5 High-speed craft

 

Part B – Recommendations for certain types of ships and additional guidelines

 

Chapter 1 – General

1.1 Purpose

1.2 Application

 

Chapter 2 – Recommended design criteria for certain types of ships

2.1 Fishing vessels

2.2 Pontoons

2.3 Containerships greater than 100 m

2.4 Offshore supply vessels

2.5 Special purpose ships

2.6 Mobile offshore drilling units (MODUs)

 

Chapter 3 – Guidance in preparing stability information

3.1 Effect of free surfaces of liquids in tanks

3.2 Permanent ballast

3.3 Assessment of compliance with stability criteria

3.4 Standard conditions of loading to be examined

3.5 Calculation of stability curves

3.6 Stability booklet

3.7 Operational measures for ships carrying timber deck cargoes

3.8 Operating booklets for certain ships

 

Chapter 4 – Stability calculations performed by stability instruments

4.1 Stability instruments

 

Chapter 5 – Operational provisions against capsizing

5.1 General precautions against capsizing

5.2 Operational precautions in heavy weather

5.3 Ship handling in heavy weather

 

Chapter 6 – Icing considerations

6.1 General

6.2 Cargo ships carrying timber deck cargoes

6.3 Fishing vessels

6.4 Offshore supply vessels 24 m to 100 m in length

 

Chapter 7 – Considerations for watertight and weathertight integrity

7.1 Hatchways

7.2 Machinery space openings

7.3 Doors

7.4 Cargo ports and other similar openings

7.5 Sidescuttles, window scuppers, inlets and discharges

7.6 Other deck openings

7.7 Ventilators, air pipes and sounding devices

7.8 Freeing ports

7.9 Miscellaneous

 

Chapter 8 – Determination of lightship parameters

8.1 Application

8.2 Preparations for the inclining test

8.3 Plans required

8.4 Test procedure

8.5 Inclining test for MODUs

8.6 Stability test for pontoons

 

Annex 1 – Detailed guidance for the conduct of an inclining test

1 Introduction

2 Preparations for the inclining test

2.1 Free surface and tankage

2.2 Mooring arrangements

2.3 Test weights

2.4 Pendulums

2.5 U-tubes

2.6 Inclinometers

3 Equipment required

4 Test procedure

4.1 Initial walk-through and survey

4.2 Freeboard/draught readings

4.3 The incline

 

Annex 2 – Recommendations for skippers of fishing vessels on ensuring a vessel’s endurance in conditions of ice formation

1 Prior to departure

2 At sea

3 During ice formation

4 List of equipment and hand tools

Title: International Code on Intact Stability, 2008 (2008 IS Code), 2009 Edition (IB874E)
Number of Pages: 160
Product Code: MM1192K
ISBN: ISBN 13: 9789280115062, ISBN 10: 9280115065
Published Date: September 2009
Weight: 0.25 kg
Author: IMO

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