Voluntary Vessel Speed Reduction Zone In Effect NOAA recommends that vessels > 300 gross registered tons transiting the zone do so at speeds of 10 knots or less

October 2023

San Francisco Industry Report: October 2023

During October 2023, we saw 225 large vessels transit 18,837 nautical miles in the voluntary vessel speed reduction zone in the San Francisco Bay. The Whale Presence Indicator was “High” or “Very High” for 25 days during that time.


Top 10 Operators

The 10 operators with the most nautical miles transited during October 2023. Grade indicates the percentage of total transit distance that was at or below the 10 knot voluntary speed recommendation put in place to protect endangered whales.

Operator Distance (nm) Grade(cumulative)
CMA CGM SA The French Line 1,014 nm A (93.67%)
Ocean Network Express Pte Ltd 986 nm A (86.72%)
Evergreen Marine Corp 981 nm B (71.75%)
Yang Ming Marine Transport 909 nm A (84.76%)
MSC Mediterranean Shipping Co 883 nm A (92.87%)
Maersk A/S 845 nm A (87.41%)
NYK Line 644 nm A (80.69%)
Matson Navigation Co Inc 578 nm B (61.20%)
Princess Cruise Lines Ltd 553 nm D (35.17%)
CSL Americas 546 nm A (88.65%)

Voluntary Vessel Speed Reduction Zone

The Voluntary Speed Restriction is currently:


For more information, see NOAA’s Vessel Speed Reduction Guidelines.

What is Whale Safe?

For more information, visit the Whale Safe website.