It may be less convenient than thought for oil tankers to take advantage of the newly expanded Panama Canal. The expansion will allow a large number of ships that were once too large to make transit, but not without first refitting. Previously, Canal operators used locomotives to haul ships through the locks, but the new locks will use tugboats instead. That will require mooring equipment—chocks and bollards, the old salts say—which many oil tankers lack.
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