A.P. Moller-Maersk A/S, the world’s second-largest container line, is expecting shipping disruptions in the Red Sea to continue for months because of heightened security risks. 

The Copenhagen-based company posted a notice on Friday showing 15 container-line routes affected between Asia and Europe, as well as from the US East Coast to the Middle East. 

Since the start of the week, global shippers have redirected vessels to avoid Houthi militants attacking ships in the Red Sea, extending voyage times for merchant and energy tankers. 

It comes as the Panama Canal has also reduced traffic due to a drought limiting the canal’s water supply.