To implement Continuous Machinery Survey (CMS), certain survey items may be credited by the overhaul and inspection done by the Chief Engineer of the ship. In this case, "Confirmatory Survey" is required to confirm the records of inspection by the Chief Engineer and the condition of the items.

Relevant requirements to this "Confirmatory Survey" in Part B of "Guidance for the Survey and Construction of Steel Ships" have been revised by Amendment No.2 of 2008 dated 18 April 2008 as shown in the Attachment and will be implemented from 1 May 2008.

Outlines of these amendments are:
1. The timing of Confirmatory Survey has been revised from "within 5 months from the date of the inspection by the Chief Engineer" to "by the timing of next periodical survey";
2. The next due date has been changed to the 5-year period from the date of the inspection by the Chief Engineer;
3. Confirming the Chief Engineer's profile by the Surveyor at the Confirmatory Survey has been specified.

With reference to the above amendments, ClassNK would like to advise the owners of the ships that:
1. Confirmatory Survey was required to be carried out within the due dates of the items and also within 5 months from the date of the inspection by the Chief Engineer. By implementation of the amendment, it may be carried out "by the timing of a next periodical survey" even after the due dates of the items. It does not mean that the inspection by the Chief Engineer can be done by the timing of the next periodical survey after the due dates of the items.
The survey status of the item which is not credited within the due date is changed as "Chief Engineer's report to be confirmed by the next class periodical survey." after the due date;
2. The next due date of the item was the day of 5 years from the date of Confirmatory Survey regardless the date of the inspection. By implementation of the amendment, it will be changed to the day of 5 years from the date of the inspection regardless the date o