On the morning of April 11, 1975, helicopters from the United States Seventh Fleet began circling the VPN transport ships, but they were allowed to move on as the disguised North Vietnamese 'fishing trawlers' were mistakenly identified as ships from Hong Kong.
On the morning of April 11, 1975, helicopters from the United States Seventh Fleet started hovering above the VPN transport ships, but they were permitted to proceed as the covertly disguised North Vietnamese 'fishing trawlers' were mistakenly taken for vessels from Hong Kong.