SINGAPORE, Dec. 25 -- Singapore port operator PSA is preparing for a possible increase in vessel traffic should shipping lines resume using the Suez Canal after nearly two years of diversions around Africa.

The Straits Times reported that carriers had rerouted ships to avoid attacks by Yemeni rebels in the Red Sea, lengthening voyages and raising costs.

"For PSA Singapore, as the world's largest transshipment hub, we are anticipating demand to be elevated due to a surge in arrival of vessels on the East-bound route, particularly in the initial weeks following the re-routing," a PSA spokesperson said.

The spokesperson added, "To mitigate potential disruptions arising from these routing changes, we are proactively engaging shipping-line ...