in MCA Oral Exam Questions What is the maximum period of validity of a Passenger Certificate? by Ship Inspection 18.6k Views 12 months. Share this: See more Previous article What certificate is issued to a UK passenger ship on non-international (i. e. domestic) voyages? Next article What surveys are required for a Passenger Certificate? Written by Ship Inspection Leave a ReplyCancel replyYou must be logged in to post a comment.