Shipyards in Singapore were scrambling on Wednesday to find out whether they were able to continue operating following a raft of new anti-coronavirus measures announced on Tuesday evening.

Lee Hsien Loong, Singapore’s prime minister, extended the country’s lockdown by another month, effectively leaving most businesses shut until 1 June.

Lee, who prefers to refer to the measures as circuit breakers rather than a lockdown, said the resurgence of the virus in the city-state required extra measures to be put into place, including calling a halt to all business activities that are not critical for daily living or maintaining essential supply chains.