"Grieving families cannot quickly make arrangements, and their loved ones who have passed are remaining in hospitals longer, thus the need for this accommodation," the hospital in Brooklyn's Fort Greene neighbourhood said.
The city's medical examiner's office has also started operating a makeshift morgue, as it did after the September 11 attacks, to provide emergency capacity as the city's permanent facilities fill up.
The city's coronavirus death toll more than doubled in the past four days, surging from 450 on Friday to 932 as of today.
The city and Fema have delivered refrigerated trucks to various hospitals, while the Office of Chief Medical Examiner has been guiding them on how to properly move and store bodies, officials said.
"To see the scenes of trailers out there and what they're doing with those trailers — they're freezers, and nobody can even believe it," US President Donald Trump said.
At some hospitals, like Lenox Hill in Manhattan, the trailers are being parked on city streets, along footpaths and in front of apartments. Cars and buses passed by as bodies were loaded outside the Brooklyn Hospital Centre.
Cellphone videos posted on social media over the weekend drew attention to hospitals using trailers to store bodies. An image from one video of the activity outside Brooklyn Hospital Centre appeared on the front page of the New York Post.
"It's hard to believe this, but this is for real," said the man shooting the video, his voice quaking. "Lord have mercy, help us Lord, this is for real."
- AP