The maximum total quantity of explosives that may be on board a vessel using this anchorage shall be limited to 3,000 tons unless otherwise authorized with the written permission of the Captain of the Port. Each vessel using this anchorage shall be prepared to move within 1 hour upon notification by the Captain of the Port.į. Each vessel using this anchorage may not remain for more than 12 hours unless authorized by the Captain of the Port.Į. This anchorage may not be used by vessels for the purpose of loading any dangerous cargoes or combustible liquids unless authorized by the Captain of the Port.ĭ. This anchorage is primarily for use by vessels requiring a temporary anchorage waiting to proceed to pier facilities or other anchorage grounds. Each vessel using this anchorage may not project into adjacent channels or fairways.Ĭ. This radio watch must be maintained by a person who fluently speaks the English language.ī. When sustained winds are in excess of 25 knots each vessel greater than 300 gross tons using this anchorage shall maintain a continuous radio watch on VHF channel 13 (156.65 MHz) and VHF channel 14 (156.70 MHz). However, in December 2009, nearly 4,000 sea lions that were identified as members of the California sub-species were seen outside Oregon's Sea Lion Caves, suggesting that they were likely the sea lions from Pier 39.A. It remains unknown exactly where they went and why. A handful of sea lions did return in February, and by late May several hundred could once again be seen on Pier 39. Although the reason for their seasonal appearance and departure is not known for certain, according to Jeff Boehm, executive director of the Marine Mammal Center in Sausalito, 'Most likely, they left chasing a food source,' anchovies and sardines. In November 2009 the more than 1,701 (Thanksgiving Week, 2009) sea lions that had lived at the pier began to leave, and by late December 2009 nearly all were gone a similar flux in population occurs annually, with the animals returning in the spring.

Scientists continue to collect information there, adding to knowledge about sea lion health, dietary habits, and behavior. Volunteers and staff at The Marine Mammal Store and Interpretive Center monitor the sea lion population each day, and educational information is provided to tourists who visit from around the world. Although fluctuations in the number of sea lions at Pier 39 are dramatic, as many as 1,701 (Thanksgiving Week, 2009) have been officially reported at one time, many of whom are recognizable to researchers and others, and some of whom have been unofficially named.

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