California Code of Regulations › Title 14 - Natural Resources › Division 1 - Fish and Game Commission-Department of Fish and Game › Subdivision 4 - Office of Spill Prevention and Response › Chapter 4 - Vessel Requirements › Subchapter 1 - Tank Vessel Escort Program for the San Francisco Bay Region › Article 1 › Section 851.9 - Tanker and Tug Matching Criteria, and Tanker Crew and Equipment Requirements

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
(a) Default Matrix
						Option for Matching Tugs to Tankers: The tug or tugs used for an escorted
						transit shall be able to provide sufficient braking force to stop the escorted
						tanker from a speed of 5 knots through the water. The braking force of the
						tug(s) shall match the tanker's displacement, as indicated in the following
						matrix:
Zones 1 and
								  2
Zones 4 and 6
Assisting Current
slack
1
								  kt
2 kts
3 kts
4 kts
slack
1
								  kt
2 kts
3 kts
4 kts
Displacement*
Braking Force in kips (1,000 pounds of force)
0 to <
								  20
20
20
30
40
40
40
50
70
90
110
20 to <
								  30
20
30
40
50
60
50
70
90
120
160
30 to <
								  40
30
40
50
60
70
60
90
120
160
210
40 to <
								  50
30
40
60
70
90
70
110
150
200
250
50 to <
								  60
40
60
70
90
110
100
140
190
250
320
60 to <
								  80
50
70
90
120
140
120
180
250
330
420
80 to <
								  100
60
80
110
140
180
150
220
300
400
520
100 to <
								  120
70
100
130
170
210
180
270
370
500
650
120 to <
								  140
80
110
150
190
240
210
310
430
580
760
140 to <
								  160
90
140
190
240
310
240
350
490
660
860
160 to <
								  180
100
150
210
270
350
260
390
550
740
970
180 to <
								  200
110
170
230
300
390
**
**
**
**
**
200 to <
								  220
120
180
250
330
420
**
**
**
**
**
* 1,000 long tons
** The channel depth in zones 4 and 6 limits vessels
						  that may use the channel to those drawing less than 35 feet. This table does
						  not address vessels in zones 4 and 6 with a displacement greater than 180,000
						  long tons because such vessels would draw more than 35 feet and would thus not
						  be allowed into these zones.
(1)
						Applicable current velocity: The current velocities shall be determined using
						the published tide and current tables developed and maintained by NOAA, and
						used by the pilots. The current velocity used shall be the one published for
						the estimated time of arrival at the points noted below. The estimated time of
						arrival shall include a window of 30 minutes before and after the scheduled
						arrival to account of possible delays or changes. Tank vessel operators are
						responsible for adjusting the estimated arrival time when it appears that it
						will fall outside of the originally estimated one hour window.
(2) Location of current readings: The
						specific current velocity to be used in conjunction with the matrix shall be
						the published readings for the following locations:
(A) The Golden Gate Bridge - the predicted
						current velocity at the Golden Gate Bridge shall apply to vessels in zones 1
						and 2 that are west of a north-south line drawn through the eastern tip of
						Alcatraz Island and terminating at Angel Island or to vessels in zones 1 and 2
						that are west of the eastern entrance to Racoon Strait.
(B) The Bay Bridge; west of Yerba Buena
						Island - the predicted current velocity at the Bay Bridge shall apply to
						vessels in zone 2 that are south of an arc drawn from Alcatraz Island east to
						Treasure Island and east of the north-south line drawn through Alcatraz
						Island.
(C) 1.25 miles north of
						Point Chauncey - The predicted current velocity at 1.25 miles north of Pt.
						Chauncey shall apply to vessels in zone 2 that are north of an arc with a
						radius of 2.7 nautical miles centered at the intersection of the Bay Bridge and
						the San Francisco Peninsula drawn from Alcatraz Island east to Treasure Island
						and east of the north-south line drawn through the eastern tip of Alcatraz
						Island.
(D) The San Mateo Bridge
						The predicted current velocity at the San Mateo Bridge shall apply to vessels
						while in zone 4.
(E) The Carquinez
						Bridge - the predicted current velocity in Carquinez Strait shall apply to
						vessels in zone 6.
How to use the Default Matrix Option for Matching Tugs
						  to Tankers: The matrix provides current velocities for slack water, 1, 2, 3,
						  and 4 knots. The slack water column shall be used only when the water is truly
						  slack. The 1 knot column shall be used for any velocity above 0 and equal to 1.
						  The 2 knot column shall be used for any velocity above 1 and equal to 2, and so
						  on up to the 4 knot maximum.
In those situations where the current velocity is above
						  4 knots, such as may occur at the Golden Gate, the tank vessel requiring an
						  escort tug shall reschedule the transit to a time when the current velocity
						  drops to 4 knots or below.