Close to two hours after party boat Island Royalty was escorted back to shore for overloading, security forces have said it will not be allowed back out.
This, after a passenger headcount, revealed there were 409 passengers on board.
This figure does not include crew members.
The commercial craft is licensed for 300 passengers.
The Silent Morning Cooler Cruise was scheduled to take place from 9 am to 2 pm.
There are reports that another boat also carrying partygoers is currently in Chaguaramas.