A rule in the sailing instructions for an event requires that a certificate be produced or its existence verified before a boat races. One boat does not comply with this requirement, but before the first race she provides the race committee with a statement signed by the person in charge that the boat has a valid certificate. At the end of the event, the certificate has neither been produced nor verified.
requires that the boat be disqualified from all races of the event. Is the race committee permitted to score the boat "DSQ" for all races without a hearing?
Yes. In fact, it is required to do so (see rules 78.2
World Sailing 2013, revised 2017