International Code on Intact Stability
{{Admiralty law}}
The International Code on Intact Stability (IS Code) is the International Maritime Organization (IMO) standard for ship stability.{{cite web|url=https://www.imo.org/en/OurWork/Safety/Pages/ShipDesignAndStability-default.aspx#:~:text=Intact%20Stability%20Code,75(69)). |title=Intact Stability Code |publisher=International Maritime Organization |access-date=29 February 2024}}{{cite web|url=https://www.wartsila.com/encyclopedia/term/international-code-on-intact-stability-2008-(2008-is-code) |title=International Code on Intact Stability, 2008 (2008 IS Code) |publisher=Wärtsilä |access-date=29 February 2024}}{{cite web|url=https://puc.overheid.nl/nsi/doc/PUC_3005_14/2/ |title=02 IS-Code Code on Intact Stability by IMO instruments |publisher=Human and Environment Transport Inspectorate, Netherlands |access-date=29 February 2024}}{{cite book |date=2015 |title=21st Century Seamanship |location=Edinburgh |publisher=Witherby Publishing Group |page=612-613 |isbn=9781856096324}}
History
The Code for Intact Stability was first issued in 1993 under IMO resolution A.749(18)).
In 2008, the Code was updated by the IMO.
In December 2019, amendments to the Code were adopted that entered into force on 1 January 2020.{{cite web|url=https://seanews.co.uk/maritime-events/solas-amendments-entering-into-force-1-january-2020/ |title=SOLAS amendments entering into force 1 January 2020 |publisher=Sea News |access-date=29 February 2024}} These amendments related to ships engaged in anchor handling
operations and to ships carrying out lifting and towing operations.
Content
The Code contains both mandatory regulations and recommended provisions, setting out the minimum stability standards for ships.{{cite book |date=2022 |title=Carefully to Carry |publisher=Witherby Publishing Group |page=473 |isbn=9781914993121}} This includes information on precautions against capsizing, metacentric heights (GM), righting levers (GZ), rolling criteria, Free surface effect and watertight integrity.
The 2008 version of the Code details guidelines on Second Generation Intact Stability for ships, specifically criteria for dynamic stability and damage assessment.{{cite web|url=https://www.maritimeprofessional.com/news/addressing-guidelines-second-generation-intact-363113 |title=Addressing the New IMO Guidelines for Second Generation Intact Stability |publisher=Maritime Logistics Professional |access-date=29 February 2024}}
The Code is split into two parts. Part A contains mandatory criteria. Part B contains additional guidelines and recommendations. The Code requires each ship to have a stability book on the ship. For passenger ships, a regular survey is required.