Requirements concerning LOAD LINE - IACS

1 INTERNATIONAL ASSOCIATION OF CLASSIFICATION SOCIETIESR equirements concerningLOAD LINEPage 1 IACS Req. 2013 CONTENTSL1 DeletedL2 Intact stability - matter of Apr 2013L3 Intact stability of tankers during liquid transfer operationsDeleted May 2001L4 Closure of chain Aug 2011L5 Onboard computers for stability Nov 2006L1 Page 1 of 1 L1(cont)DeletedL1 End ofDocument L2 L2 (cont) L2 (1988) ( June 2000) ( Apr 2013) Intact stability matter of class All new ships with a length of 24 m and above will be assigned class only after it has been demonstrated that their intact stability is adequate for the service intended. Adequate intact stability means compliance with standards laid down by the relevant Administration or those of the Classification Society taking into account the ship s size and type.

2 The level of intact stability for ships with a length of 24 m and above in any case should not be less than that provided by Part A of IMO Resolution (85) as applicable to the type of ship being considered. Where other criteria are accepted by the Administration concerned, these criteria may be used for the purpose of classification. Evidence of approval by the Administration concerned may be accepted for the purpose of classification. NOTES 1. This UR is to be uniformly applied by IACS Societies on ships contracted for construction on and after 1 July 2014. 2. The "contracted for construction" date means the date on which the contract to build the vessel is signed between the prospective owner and the shipbuilder. For further details regarding the date of "contract for construction", refer to IACS Procedural Requirement (PR) No.

3 29. End of Document Page 1 of 1 IACS Req. 1988 2013 Intact stability of tankers during liquid transfer operationsRe-categorized as Recommendation No. 60 in May 2001. L3L3 L4 Page 1 of 1 IACS Req. 2002 2011 S18 (cont) Closure of Chain Lockers This Unified Requirement is applicable to ships with a length of 24 m and above built in accordance with the 1966 Load Line Convention or the 1988 Protocol to the Load Line Convention and the keels of which are laid or which are at a similar stage of construction on or after 1 July 2003. 1. Spurling pipes and cable lockers are to be watertight up to the weather deck. Bulkheads between separate cable lockers (see Arrangement 1), or which form a common boundary of cable lockers (see Arrangement 2), need not however be watertight.

4 2. Where means of access is provided, it is to be closed by a substantial cover and secured by closely spaced bolts. 3. Where a means of access to spurling pipes or cable lockers is located below the weather deck, the access cover and its securing arrangements are to be in accordance with recognized standards* or equivalent for watertight manhole covers. Butterfly nuts and/or hinged bolts are prohibited as the securing mechanism for the access cover. 4. Spurling pipes through which anchor cables are led are to be provided with permanently attached closing appliances** to minimize water ingress. * Examples of the recognized standards are such as: i) ISO 5894-1999 ii) China: GB 11628-1989 Ship Manhole Cover iii) India: IS 15876-2009 "Ships and Marine Technology manholes with bolted covers" iv) Japan: JIS F2304, "Ship's Manholes" and JIS F2329, "Marine Small Size Manhole" v) Korea: KSV 2339:2006 and KS VISO5894 vi) Norway: NS 6260:1985 to NS 6266:1985 vii) Russia: GOST 2021-90 "Ship's steel manholes.

5 Specifications" ** Examples of acceptable arrangements are such as: i) steel plates with cutouts to accomodate chain links or ii) canvas hoods with a lashing arrangement that maintains the cover in the secured position. Notes: 1. Changes introduced in of this UR are to be uniformly implemented by IACS Societies on ships contracted for construction on or after 1 January 2012. 2. The contracted for construction date means the date on which the contract to build the vessel is signed between the prospective owner and the shipbuilder. For further details regarding the date of contract for construction , refer to IACS Procedural Requirement (PR) No. 29. L4 (Nov 2002) ( July 2003) ( Nov 2005) ( Mar 2011) ( Aug 2011) End of Document IACS Req.

6 2002 2011 L5 Page 1 of 9 IACS Req. 2004 2006L5(cont d)Onboard Computers for StabilityCalculationsApplicationThe use of onboard computers for stability calculations is not a requirement of , a stability software installed onboard shall cover all stability requirementsapplicable to the ship. This UR, which requires only software approval, applies to onboardcomputers which are provided with software capable of performing stability calculations forthe and passive systems are defined in paragraph 2. This UR covers passive systems andthe off-line operation mode of active systems Requirements in this UR apply to stability software on ships contracted for construction onor after 1 July scope of a stability calculation software shall be in accordance with the stability information as approved by the administration and shall at least include all information and perform all calculations or checks as necessary to ensure compliance with the applicable stability Approved stability software is not a substitute for the approved stability information.

7 And is used as a supplement to the approved stability information to facilitate stability The input/output information should be easily comparable with approved stability information so as to avoid confusion and possible misinterpretation by the operator relative to the approved stability An operation manual is to be provided for the onboard computer stability language in which the stability information is displayed and printed out as well as the operation manual is written should be the same as used in the ship s approved stability information. The society may require a translation into a language considered :1. The contracted for construction date means the date on which the contract to build the vessel is signed between the prospective owner and the shipbuilder.

8 For further details regarding the date of contracted for construction , refer to IACS Procedural Requirement (PR) Changes introduced in of this UR are to be uniformly applied by IACS Societies on ships contracted for construction on or after 1 January (May 04)( )( )( )IACS Req. 2004 2006 2006L5 Page 2 of 9 IACS Req. 2004 2006L5(cont d)- The onboard computer software for stability calculations is ship specific and the results of the calculations are only applicable to the ship for which it has been case of modifications implying changes in the main data or internal arrangement of the ship, the specific approval of any original stability calculation software is no longer valid. The software is to be modified accordingly and SystemsA passive system requires manual data entry,an active system replaces the manual entry with sensors reading and entering the contents oftanks, etc.

9 , anda third system, an integrated system, controls or initiates actions based on the sensor-supplied inputs and is not within the scope of this of Stability SoftwareThree types of calculations performed by stability software are acceptable depending upon avessel s stability Requirements :Type 1 Software calculating intact stability only (for vessels not required to meet a damage stabilitycriterion)Type 2 Software calculating intact stability and checking damage stability on basis of a limit curve( for vessels applicable to SOLAS Part B-1 damage stability calculations, etc.) orpreviously approved loading conditions andType 3 Software calculating intact stability and damage stability by direct application of pre-programmed damage cases for each loading condition (for some tankers etc.)

10 L5 Page 3 of 9 IACS Req. 2004 2006L5(cont d) calculation program shall present relevant parameters of each loading condition in order to assist the Master in his judgement on whether the ship is loaded within the approval limits. The following parameters shall be presented for a given loading condition:- deadweight data;- lightship data;- trim;- draft at the draft marks and perpendiculars;- summary of loading condition displacement, VCG, LCG and, if applicable, TCG;- downflooding angle and corresponding downflooding opening;- compliance with stability criteria: Listing of all calculated stability criteria, the limit values, the obtained values and the conclusions (criteria fulfilled or not fulfilled). direct damage stability calculations are performed, the relevant damage cases according to the applicable rules shall be pre-defined for automatic check of a given loading clear warning shall be given on screen and in hard copy printout if any of the loading limitations are not complied data are to be presented on screen and in hard copy printout in a clear unambiguous date and time of a saved calculation shall be part of the screen display and hard copy hard copy printout shall contain identification of the calculation program including version of measurement are to be clearly identified and used consistently within a loading 4 of 9 IACS Req.