https://www.siliconvalley.com/2021/11/12/new-ship-queue-system-aims-to-cut-congestion-pollution-at-ports-of-la-long-beach/

A new queuing system will soon require cargo vessels that arrive early to the Ports of Los Angeles and Long Beach to anchor and wait 150 miles off the California coast — rather than hugging the coastline in a large group packed within a 40-mile perimeter — in an effort to reduce ship congestion and the pollution idling ships produce.

The effort, supporters said, will “dramatically reduce the number of backlogged ships at anchorage” off the two ports as the nation deals with an unprecedented supply-chain bottleneck.