Cosco division Prosperity Investment has booked the 64,000-dwt quartet at China State Shipbuilding Corp’s Huangpu Wenchong, a statement said.

Hong Kong-listed Cosco says the ships have a price tag of $27m each and will be delivered between 2015 and 2017.

Its order comes right at the end of a year in which the Chinese owner has been fighting to get back into profit as a third successive annual loss would see it booted off the Shanghai Stock Exchange.