San Francisco Bay Region Regulated Navigational Area (RNA)

Southern Pacific Railroad Bridge Regulated Navigable Area

Between longitude 122°13'31"W (coinsiding with the charted position 
of Carquinez Bridge) and longitude 121°53'17"W (coinsiding with the 
charted location of New York Point.

Eastbound vessels:

(A)     The master, pilot, or person directoring the movement of 
a power-driven vessel of 1600 or more gross tons, or a tug with a 
tow of 1600 or more gross tons traveling eastbound and intending 
to transit under the lift span (centered at coordinates 
38°02'18"N/122°07'17"W) of the railroad bridge across Carquinez 
Strait at mile 7.0 shall immediately after entering the RNA, 
determine whether the visability around the lift span is 1/2 
nautical mile or greater.

(B)     If the visibility is less than 1/2 nautical mile, or 
subsequently becomes less than 1/2 nautical mile, the vessel 
shall not transit under the lift span.

Westbound Vessels:

(A)     The master, pilot, or person directoring the movement 
of a power-driven vessel of 1600 or more gross tons, or a tug 
with a tow of 1600 or more gross tons traveling westbound and 
intending to transit under the lift span (centered at coordinates 
38°02'18"N/122°07'17"W) of the railroad bridge across Carquinez 
Strait at mile 7.0 shall immediately after entering the RNA, 
determine whether the visability around the lift span is 1/2 
nautical mile or greater.

(B)     If the visibility is less than 1/2 nautical mile, the 
vessel shall not pass beyond londgitude 121°55'19"W (coinsiding 
with the charted position of the westernmost end of Mallard Island) 
until the visibity inproves to a greater than 1/2 nautical mile 
around the lift bridge.

(C)     If after entering the RNA the visibility around the lift 
span subsequently becomes less than 1/2 nautical mile, the master, 
pilot, or person directing the movement of the vessel either shall 
not transit under the lift span or shall request a divation from 
the requirements of the RNA as presented in paragraph (b) of this 
section.

(D)     Vessels that are moored or anchored within the RNA with 
the intent to transit under the lift span shall remained moored 
or anchored until visibilty around the lift span becomes greater 
than 1/2 nautical mile.


NOTE A

  Navigation regulations are published in Chapter 2, U.S. 
Coast Pilot 7. Additions or revisions to Chapter 2 are pub-
lished in the Notice to Mariners. Information concerning the 
regulations may be obtained at the Office of the Commander, 
11th Coast Guard District in Alameda, California or at the 
Office of the District Engineer, Corps of Engineers in 
San Francisco, California.
  Refer to charted regulation section numbers.