Contractors at the Panama Canal have received the second set of rolling gates from Italy for a new set of locks, part of a massive project to expand the waterway for larger commercial vessels. The Panama Canal Authority said the project is making good progress after previous disruptions.

One of the key commitments obtained by the Panama Canal Authority earlier this year to resolve a contract dispute with the international consortium building the lock systems on the Atlantic and Pacific oceans was delivery of the 12 remaining locks in stages by December.

The lock gates were delivered by a special-purpose, semi-submersible vessel from Trieste. The first four gates arrived last August.