As Dutch ice-skaters made the most of the lowest December temperatures in 12 years, authorities announced it would be deploying a ship to break up ice in the port of Rotterdam, AFP reported.
A single vessel will start ice-breaking duties in an area of the harbour where ice is threatening to derail sea traffic.
In 1996, the last time that such action was needed, boats worked night and day for three weeks, clearing a passage for barges and container ships.
Meanwhile, the cold weather was welcomed by many local people, the Dutch are famously fond of skating on the any of the dozens of natural ice rinks across the country.
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