A French destroyer rescued 29 mariners from an oil tanker that came under repeated attack in the Red Sea, officials said Thursday, while also destroying a bomb-carrying drone boat in the area.

Yemen’s Houthi rebels are suspected to have carried out the assault on the Sounion, now abandoned in the waterway. The attack, the most serious in the Red Sea in weeks, comes during a monthslong campaign by Houthis targeting ships over the Israel-Hamas war in the Gaza Strip that has disrupted a trade route through which $1 trillion in cargo typically passes each year.