USA Maritime compliance: At-berth emission regulations in California (update Jan 2023)


( The original Ocean-Going Vessel At-Berth Regulation was approved in December 2007 with compliance requirements that began in 2014.  The 2007 At-Berth Regulation affects the following three vessel categories: container ships, passenger ships, and refrigerated cargo ships at six California ports: Los Angeles, Long Beach, Oakland, San Diego, San Francisco, and Hueneme. Compliance requirements for vessels include visit requirements and emission or power reduction requirements both which were phased in over time to the current 80% reduction requirement.

More details of the California At-Berth Regulations can be found HERE

At Berth Regulation Implementation

The 2007 regulations were replaced by CARB’s 2020 At-Berth Regulation, which takes effect on January 1, 2023. Under the 2020 regulation, emission reduction and reporting requirements become considerably more stringent and CARB requires vessels to meet emission reduction and reporting requirements at California marine terminals by a specific deadline, as illustrated below.

Beginning January 1, 2023, CARB’s 2020 “At Berth” regulation enters into force as per the timeline shown below:

Compliance date:

Vessel Type:

January 1st, 2023Container and Refrigerated Cargo vessels
January 1st, 2023Cruise (Passenger) vessels
January 1st, 2025Roll-On Roll-Off vessels
January 1st, 2025Tanker vessels that visit the port of LA or Long Beach
January 1st, 2027All remaining Tanker vessels



You can download the updated Frequently Asked Questions (FAQ) document, below:



Source: California Air Resources Board



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