LA & LB Local Knowledge - Know Test Questions Flashcards
What is the turning diameter of the LA turning basin?
1596 ft
What is the bearing of the LA Main Ship Channel?
339° - 296° - 342° - 357° - 027°
What is:
A) The Variation of Los Angeles Harbor?
B) The rate of change?
C) Where can it be found?
A) 12°E.
B) Decrease 5’.
C) On chart 18751 in a compass rose.
Which LA Approach Buoy has a Racon on it?
Lighted Whistle Buoy 3
What are the horizontal and vertical clearances for the Vincent Thomas Bridge
・Horizontal Clearance: 1,150 ft.
・Vertical Clearance: 165 ft.
・Vertical Clearance: 185 ft. for middle width of 500 ft.
What is the vertical clearance for the power cables strung across the Cerritos Channel?
Authorized clearance: 155 ft.
Where are the LA Fireboat Stations located?
・West Channel - Berth 43.
・Main Channel - Berth 85-86.
・East Basin - Berth 194-195.
・Fish Harbor - Berth 256.
In Long Beach, where might one experience bank cushion and suction, and how can its affects be reduced?
A pilot in the port of Long Beach can expect to encounter bank cushion and suction in the Back Channel. Reducing speed will reduce the effects of bank cushion and suction. To keep the vessel in the channel, a pilot may also employ the help of the rudder, by steering slightly toward the closest bank to counteract the bank cushion effect on the bow.
What specific local charts and publications must a pilot have access to and maintain?
・NOAA Charts 18751, 18749, 18746, 18740.
・NOAA US Coast Pilot 7.
・US Coast Guard, Light List, Volume IV .
Also:
・Charts 18720.
・VTMS Users Manual.
・Los Angeles and Long Beach Port Tariffs.
・Los Angeles and Long Beach Harbor Safety Plan.
You are on an inbound ship within 1nm of Queens Gate and observe a fleet of sailboats moving eastward approaching the number 3 buoy and hoisting their spinnakers and it appears they will continue east towards the Delta anchorage. What should you do?
The sailboats should keep clear of a vessel that can only maneuver in a narrow channel, as per Inland Navigation Rules, Rule 9 (as noted in Note C).
If your vessel is in doubt as to whether the actions of the sailboats are taking sufficient action to avoid collision, your vessel should sound 5 short blasts and if necessary to avoid collision shall slacken her speed or take off all way.
Name three areas where one-way traffic is recommended in Long Beach.
・Back Channel. ・Cerritos Channel. ・Entering Pier J Slip. ・Entering Queens Gate. ・Entering Southeast Basin. ・When visibility is <0.5nm.
How can you obtain weather forecasts 24 hours a day?
・Inmarsat C Weather Bulletin.
・Internet.
・Radio.
・NOAA Wx Broadcasts:
-Los Angeles, CA - KWO 37 - 162.550 mHz.
-Santa Ana, CA - WWG 21 - 162.450 mHz.
The standards of care for reduced visibility state, whenever visibility inside the federal breakwater is less than 0.5nm, the Los Angeles/Long Beach traffic center will impose _________ where appropriate.
one-way traffic
NOAA Weather Radio Broadcast Channels:
・Los Angeles, CA - KWO 37 - 162.550 mHz.
・Santa Ana, CA - WWG 21 - 162.450 mHz.
What time of day is the calmest?
Early morning hours.
Which months have the most wind and which months have the least wind in the ports of Los Angeles and Long Beach?
・March-May (April - Highest mean wind speed of 7.4 kts).
・November-January (December - Lowest mean wind speed of 5.7 kts).
Frequency for Oxnard NOAA WX station (PROTEST QUESTION):
There is no Oxnard Wx Station. Use the Los Angeles WX Station.
・Los Angeles, CA - KWO 37 - 162.550 mHz.
What is P.O.R.T.S.?
Physical Oceanographic Real-Time System (P.O.R.T.S.) is an integrated system of sensors concentrated in seaports that provide real-time information about environmental conditions. It collects and disseminates observations of water levels, currents, salinity, bridge air gap and meteorological parameters (e.g., winds, atmospheric pressure, air and water temperatures) that mariners need to navigate safely. The objectives of the PORTS® program are to promote navigation safety, improve the efficiency of U.S. ports and harbors, and ensure the protection of coastal marine resources.
Tides and currents - What is Max Low Tide? What is the Datum?
The mean range of tide in Los Angeles Harbor is 3.8 feet, and in Long Beach inner and outer harbors the mean range is 3.7 feet. The diurnal range of tide is about 5.4 feet for these harbors. A range of about 9 feet may occur at times of maximum tides (7.3 ft to -2.0 ft from MLLW).
Datum: MLLW.
Chart Datum: NAD83 (NGS84)
Average tidal ranges. Diurnal Tide ranges. Max tide ranges.
The mean range of tide in Los Angeles Harbor is 3.8 feet, and in Long Beach inner and outer harbors the mean range is 3.7 feet. The diurnal range of tide is about 5.4 feet for these harbors. A range of about 9 feet may occur at times of maximum tides (7.3 ft to -2.0 ft from MLLW).
Datum: MLLW.
Chart Datum: NAD83 (NGS84)
The tidal currents follow the axis of the channels and rarely exceed 1 knot.
You are on a laden tanker preparing to enter Queens Gate, what is the maximum draft for a minus 1ft tide for the transit?
On the approach to Queen’s Gate, while in the channel, the controlling depth is 76 ft. Since the minimum UKC requirement for the Port of Long Beach is 10% of the vessel’s draft for the transit between the seabuoy and Buoy #3, a maximum draft of 69 ft is acceptable (69 ft + 6.9 ft = 75.9 ft). With a tide of -1 feet, the maximum draft is reduced by 1 foot to 68 ft.
You are on a ship entering the LA Pilot Area bound for berth 208. What is the required minimum UKC for the transit?
・For the transit between Buoy 1 and Buoy 11, the minimum UKC is 10% of the vessel’s draft. (With a controlling depth of 81 ft, the maximum draft is 73 ft).
・From Buoy 11 to a position off the berth, the minimum UKC is 2 ft. (With a controlling depth of 53 ft, the maximum draft is 51 ft).
What is the UKC required to transit the flats?
・Between the Long Beach seabuoy and the Long Beach Channel Buoy #3, minimum under-keel clearance before correction for roll and pitch is 10% of the vessel’s draft.
・Between the Los Angeles Approach Channel Lighted Buoy #1 and the Los Angeles Main Channel Buoy #11, minimum under-keel clearance before correction for roll and pitch is 10% of the vessel’s draft.
・Elsewhere in the main channels of Los Angeles and Long Beach, the minimum UKC is 2.0 ft until off of the berth.
・In the final approach to the berth, and while at berth, the vessel must always remain afloat.
・At anchorages inside the breakwater, minimum underkeel clearance is:
• 4.0 ft for anchorages B-7 and B-11 when vessels draft is 50 ft or more.
• 2.5 ft for all other anchorages.
・For shifts via outer harbor between Los Angeles and Long Beach, minimum underkeel clearance is 3.0 ft.
The answer is 3.0 ft in the flats (it is considered the outer harbor).