From the story here:
The events surrounding the Maersk Hangzhou represented the 23rd illegal attack by the Houthis on international shipping since Nov. 19, the Central Command said. It was the first time the U.S. Navy said its personnel had killed Houthi fighters since the Red Sea attacks started. ...
Since the Pentagon announced Operation Prosperity Guardian to counter the attacks just over 10 days ago, 1,200 merchant ships have traveled through the Red Sea region, and none had been hit by drone or missile strikes, Vice Adm. Brad Cooper told The Associated Press in an interview on Saturday.