2.1 Data Verification Approval - Endorsed Test Conditions
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Statutory Documents - IMO Publications and Documents - Circulars - Maritime Safety Committee - MSC/Circular.836 – Recommendation on Loading Instruments – (Adopted on 6 February 1998) - Annex 2 - No.48 (1997) - Recommendation on Loading Instruments - 2. Approval Process - 2.1 Data Verification Approval - Endorsed Test Conditions

2.1 Data Verification Approval - Endorsed Test Conditions

  2.1.1 The Society should verify the computational results and actual ship data used by the calculation program for the particular ship on which the program will be installed.

  2.1.2 Upon application to the Society for data verification, the Society should advise the applicant of a minimum of four loading conditions, taken from the ship's approved loading manual, which are to be used as the test conditions. Within the range of these test conditions each compartment should be loaded at least once. These test conditions normally cover the range of load draughts from the deepest envisaged loaded condition to the light ballast condition.

  2.1.3 Read-out points should usually be selected at the position of the transverse bulkheads or other obvious boundaries. Additional read-out points may be required between bulkheads of long holds or tanks or between container stacks.

  2.1.4 Where the still water torsion moments are required to be calculated, one test condition should demonstrate such a calculation.

  2.1.5 It is important that the data contained in the loading program is consistent with the data specified in the approved loading manual. Particular attention is drawn to the final lightship weight and centres of gravity derived from the inclining experiment or lightweight check.

  2.1.6 The Society should verify that the following data, submitted by the applicant, is consistent with the as-built ship:

  • 1. Identification of the calculation program including version number.

  • 2. Main dimensions, hydrostatic particulars and, if applicable, the ship profile.

  • 3. The position of the forward and after perpendiculars, and if appropriate, the calculation method to derive the forward and after draughts at the actual position of the ship's draught marks.

  • 4. Ship lightweight and lightweight distribution along the ship's length.

  • 5. Lines plans and/or offset tables, or bonjean data at 21 stations in the length between perpendiculars.

  • 6. Compartment definitions, including frame spacing, and centres of volume, together with capacity tables (sounding/ullage tables), if appropriate.

  • 7. Deadweight definitions for each loading condition.

  2.1.7 The data verification procedure should be considered complete when:

  • 1. The loading program's system specification is found to be satisfactory. See section 3.1.

  • 2. The functionality of the program has been clearly described and the calculation methods and principles are to the satisfaction of the Society.

  • 3. The loading program's functional specification is found to be satisfactory. See section 4.

  • 4. The computational accuracy of the loading program is within acceptable tolerances. See section 2.5 for recommended tolerances.

  • 5. The actual ship's data as described in 2.1.5 is satisfactory.

  • 6. A clear and concise operation manual in accordance with 2.4 has been reviewed and found satisfactory.

  • 7. Details of the minimum hardware specification have been stated.

  • 8. Submitted test conditions have been endorsed.

  2.1.8 Member Societies have the option to issue Approval Certification for the calculation program in accordance with section 2.2. When a calculation program has such an approval, the data verification procedure should be considered complete when:

  • 1. It has been ascertained that the General Approval is applicable for the ship considered.

  • 2. The details specified on the valid Certificate of Approval correspond to the calculation program's identification and version number.

  • 3. The computational accuracy of the calculation program is within acceptable tolerances. See section 2.5.

  • 4. The actual ship's data as described in 2.1.5 is satisfactory.

  • 5. A clear and concise operation manual in accordance with 2.4 has been reviewed and found satisfactory.

  • 6. Details of the minimum hardware specification and operating system software have been stated.

  • 7. Submitted test conditions have been endorsed.

  2.1.9 The Society should send the endorsed test conditions to the local surveyor with instructions to carry out an installation test. Where the ship is in service, the endorsed test conditions should be sent to the ship's owner who should arrange for the test conditions to be placed onboard and arrangements for an installation test, witnessed by a Society surveyor, should be made.

Parent topic: 2. Approval Process
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