At every second scheduled dry-docking (i. e. every 5 years, usually) the Special Survey for renewal of class will be carried out (leading to the issue of a new Certificate of Class).
Coinciding with this will be the Docking Survey under class rules, including a tailshaft survey. Under the statutory Harmonized System of Survey and Certification, the drydocking will normally also be the time for carrying out renewal surveys for all the certificates in the system (see Section D). The statutory inspection of the ship’s bottom will also be carried out at this time.
