Determination of compliance date
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Statutory Documents - IMO Publications and Documents - Circulars - Marine Environment Protection Committee - MEPC/Circular.479 – Guidelines for Port State Control Officers Whilst Checking Compliance with the Condition Assessment Scheme (CAS) – (24 August 2005) - Annex - Guidelines for Port State Control Officers Whilst Checking Compliance with the Condition Assessment Scheme (CAS) - Determination of compliance date

Determination of compliance date

  3 In order to determine when CAS compliance is required for a particular oil tanker, the PSCO should note that, for oil tankers of 15 years of age or more on 5 April 2005, CAS is due by the first intermediate or renewal survey due on or after 5 April 2005. To determine when CAS is required, review the endorsement date for the intermediate survey on the SOLAS Cargo Ship Safety Certificate, or the SOLAS Safety Construction Certificate, as appropriate:

  • .1 If the SOLAS certificate's endorsement date for the intermediate survey is before 5 April 2005, then CAS is due at the next renewal survey (i.e., 3 months prior to the 4th anniversary date to the expiry date).

  • .2 If the SOLAS certificate does not indicate any endorsement for the intermediate survey on 5 April 2005, then CAS is due at the next intermediate survey (i.e., 3 months prior to the 2nd anniversary date to 3 months after the 3rd anniversary date).

However, for those oil tankers which have been allowed continued operation under the provisions of regulation 13G(7), CAS is due by the first intermediate or renewal survey scheduled prior to the anniversary date of the ship in 2010.

  4 For oil tankers of less than 15 years of age on 5 April 2005, CAS is due by the first intermediate or renewal survey carried out after 15 years of age. To determine when CAS is required review the endorsement date for the intermediate survey on the SOLAS Cargo Ship Safety Certificate or the SOLAS Safety Construction Certificate, as appropriate:

  • .1 If the SOLAS certificate's endorsement date for the intermediate survey is before the oil tanker is 15 years of age, then CAS is due at the next renewal survey (i.e., 3 months prior to the 4th anniversary date to the expiry date).

  • .2 If the SOLAS certificate does not indicate any endorsement for the intermediate survey by the date on which the oil tanker is 15 years of age, then CAS is due at the next intermediate survey (i.e., 3 months prior to the 2nd anniversary date to 3 months after the 3rd anniversary date).

  5 For oil tankers operating under the provisions of regulation 13H(6)(a) (carriage of crude oil having a density at 15°C higher than 900 kg/m3 but lower than 945 kg/m3), CAS is due by the first intermediate or renewal survey carried out after 5 April 2005 or after the date when the ship reaches 15 years of age, whichever occurs later.

  6 The anniversary date is the day and month of each year which corresponds to the date of expiry of the above-mentioned SOLAS certificate.

  7 If the CAS due date has passed, the PSCO should check for a CAS Statement of Compliance issued by the Administration or an Interim Statement of Compliance issued by the Recognized Organization.

  8 In any case, it is recommended that the PSCO consult the IMO database for CAS that was developed in accordance with section 14 of CAS. The database can be accessed by Parties to MARPOL 73/78 at http://gisis.imo.org/Members following the procedure detailed in MEPC/Circ.436 of 24 March 2005.


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