in MCA Oral Exam Questions Is the IOPPC in the Harmonized System of Survey and Certification? by Ship Inspection 18.6k Views Yes. Share this: See more Previous article What surveys are required for an IOPP Certificate? Next article Which ships on international voyages do not require an IOPP Certificate? Written by Ship Inspection Leave a ReplyCancel replyYou must be logged in to post a comment.