4 Methods to Demonstrate Verification of Compliance
Clasification Society 2024 - Version 9.40
Statutory Documents - IMO Publications and Documents - Circulars - Maritime Safety Committee - MSC.1/Circular.1461 – Guidelines for Verification of Damage Stability Requirements for Tankers – (08 July 2013) - Annex – Guidelines for Verification of Damage Stability Requirements for Tankers - Part 2 – Guidelines for Operation and Demonstration of Damage Stability ComplianceCompliance with damage stability regulations - 4 Methods to Demonstrate Verification of Compliance

4 Methods to Demonstrate Verification of Compliance

 There are various methods available to the master which can be used to demonstrate compliance with the regulations, as follows:

  • .1 to load the ship only in accordance with the approved loading conditions as given in the approved Stability Information Booklet (refer to the annex); or

  • .2 where the ship is not loaded in accordance with an approved loading condition from the approved Stability Information Booklet, obtain approval from the Administration or RO acting on its behalf for the proposed loading condition. It is recommended in this case that the accuracy of the verified loading condition is validated by cross-checking the predicted floating position with the observed condition by recording of actual draught readings; or

  • .3 where the ship is not loaded in accordance with an approved loading condition from the approved Stability Information Booklet, when authorized by the Administration (or RO acting on its behalf), obtain confirmation from the shore-based operating company that the proposed loading condition complies. It is recommended in this case that the accuracy of the verified loading condition is validated by cross-checking the predicted floating position with the observed condition by recording of actual draught readings; or

  • .4 where the 2008 IS Code, chapter 4, or MSC.1/Circ.1229 Type 2 (or equivalent) stability software is employed to verify damage stability compliance, this may be undertaken on board the ship or at an authorized shore location;

  • .5 to use an approved stability instrument or other acceptable method to verify that intact stability and damage stability criteria are satisfied for this operating condition. When an approved stability instrument is used for such verification, then use of this programme must be authorized by the Administration or RO acting on its behalf. Approved stability programmes may be approved as the 2008 IS Code and MSC.1/Circ.1229 damage stability software of Type 2 or Type 3; or

  • .6 the use of simplified stability data, for example, an approved range of loading conditions, curves of maximum KG or minimum allowable GM, to demonstrate compliance, noting that where such simplified data are used it is necessary to ensure that any restrictions applied in their development are also fulfilled in the actual loading condition being assessed. Use of simplified intact stability data for this purpose is not sufficient and verification must also be made against approved damage stability data.

Parent topic: Part 2 – Guidelines for Operation and Demonstration of Damage Stability ComplianceCompliance with damage stability regulations
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