The boat's occupants included children, said IOM, in a post on social media platform X
Singapore has reported more than 61,000 virus cases, with the bulk linked to outbreaks in foreign worker dormitories, and 31 deaths. While none of Sunday's new cases are in the dormitories, they are the highest number of local infections outside of the dormitories in a year.
The Asian trade and financial hub of 5.7 million people had until recently been reporting almost zero or single-digit daily infections locally for months.
But cases have been increasing in recent weeks. The government, which is particularly concerned about a rise in unlinked cases, brought back strict restrictions on gatherings and public activities from Sunday.
Of the new cases, 18 are currently unlinked, the health ministry's preliminary report said.