Renewal survey is carried our every five years
and correspond to the expiry date of classification certificate (one
classification period is five years). The renewal survey can be started up to
15 months before the due date and needs to be completed within three months
before the due date. For vessels built to DNV class the construction inspection
during newbuilding period is counted as the first renewal inspection. The
second renewal inspection starts the second classification period and is
carried out when the vessel turns five years old.