New York: Ports in Japan, China and the US face the greatest financial risk from natural disasters because of their vulnerable locations and increasing cargo volumes, a risk-management firm said.

Nagoya, Japan, leads all ports with a potential $2.3 billion (Dh8.44 billion) cost to insurers from a one-in-500-year event because of the threat from earthquakes and windstorms, RMS Inc., a risk-modelling firm, said Monday in a statement. Guangzhou, China, is second at $2 billion, the company said, citing the possibility of wind-related losses and the dangers involving petroleum products and autos. RMS said satellite images and analysis of cargo types and storage methods helped modernise risk assessments.

“Outdated techniques and incomplete data have obscured many high-risk locations,” Chris Folkman, director of product management at RMS, said in the statement. “The industry needs to cease its guessing game when determining catastrophe risk and port accumulations.”

The report was released a year after the Tianjin port explosion in China, a man-made disaster that led to more than $3 billion in claims after damaging property, disrupting supply chains and killing more than 170 people. RMS’s analysis, which also considers the amount of time cargo stays in port, found that the increased use of standardised shipping containers increased the amount of goods exposed to damage. Ships and ports have grown bigger to accommodate the containers.

“The value of global catastrophe-exposed cargo is huge and is expected to continue growing,” Folkman said.

US ports at the Gulf of Mexico held six of the top 10 spots, led by Plaquemines and New Orleans in Louisiana, because of their exposure to hurricanes. The country’s other locations on the list are Pascagoula, Mississippi; Beaumont, Texas; Baton Rouge, Louisiana; and Houston.

Catastrophe costs tied to wildfires in the oil-producing region of Canada and storms in the US cut profits at insurers including Chubb Ltd. and XL Group Ltd. this year. Travellers Cos. said second-quarter net income fell to its lowest since 2012 in part because of the fires.