An International Tonnage Certificate will be issued to a vessel when it meets several requirements, one of which is that the vessel must __________.

Correct Answer: Option D — be 79 or more feet in length

The International Convention on Tonnage Measurement of Ships, 1969, applies to all ships engaged on international voyages. Under 46 CFR 69.51, the requirement for an International Tonnage Certificate applies to vessels 24 meters (approximately 79 feet) or more in length, regardless of their gross tonnage.