The U.S. military has sent two warships through the Taiwan Strait for the second time this year as Washington ramps up its passages through the waterway amid tensions with China.

The two vessels, the guided-missile destroyer USS Curtis Wilbur and the guided-missile cruiser USS Antietam, conducted what the U.S. military said was a "routine" transit of the Taiwan Strait on Monday, "in accordance with international law."

Both warships are home-ported at the U.S. naval base in Yokosuka, Kanagawa Prefecture.