Just how many containers of cargo are stuck off California’s coast?

With around 70 container ships loaded with cargo now waiting at anchor or drifting off the ports of Los Angeles and Long Beach, how deep of a hole are the terminals actually in?

To answer that question, American Shipper analyzed data from the Marine Exchange of Southern California on exactly which ships are out there and how much cargo they can carry.

While the numbers fluctuate from day to day, there were 70 container ships in the queue on Monday with total capacity of 432,909 twenty-foot equivalent units. To put the enormity of that number in perspective, that’s more than the inbound container volume the Port of Long Beach handled in the entire month of August. It’s roughly what Charleston handles inbound in four months and what Savannah handles in two.

The combined import throughput of both Los Angeles and Long Beach in August was 893,118 TEUs. Assuming ships waiting offshore are effectively full and capacity is a good proxy for volume, and that terminals are able to process vessels at the same pace they did in August, the anchorages and drift areas could only be completely cleared if no ships arrived for 14 days straight days.

Not only would that never happen, but there is no letup in arrivals in sight. Vessel-positioning data from MarineTraffic confirms that a steady stream of container ships remains en route across the Pacific, destined for Los Angeles.