The ILA and USMX have until January 15, 2025 to avert a second East and Gulf Coast strike, just days before the start of the next presidential administration.
The demonstrations have also interrupted commercial activity in Maputo, and raised concerns about further delays to a $20 billion natural gas export project.
The Panama Canal Authority recently moved to a long-term booking system for shipping slots, which has made it easier to forecast transit demand months in advance.