Home/American Shipper/Port of L.A. reaches 53-foot depth American Shipper Port of L.A. reaches 53-foot depth FreightWaves Staff · Friday, April 05, 2013 Facebook Twitter Pinterest LinkedInThe Corps of Engineers completed the 10-year, $370 million deepening of the port’s main navigation channel and turning basins, enabling it to receive a new generation of super-size vessels now being deployed.