Chartlet #7

Question 1

Latitude 33°43’N

Answer 1

60mm from the bottom of the LB Breakwater.

Question 2

Latitude 33°42’N

Answer 2

48.5mm from southern edge of chart.

Question 3

Longitude 118°12’W

Answer 3

103mm due W of E end of Middle Breakwater.

Question 4

Longitude 118°11’W

Answer 4

25mm due E of E end of Middle Breakwater.

Question 5

Longitude 118°10’W

Answer 5

120mm due W of the end of the chart.

Question 6

Middle Breakwater Corner - Reference Point

Answer 6

MBC: From TOP of Middle Breakwater’s Corner, 9mm E, then Due S for 47mm.

Question 7

Middle Breakwater East - Reference Points

Answer 7

・MBE #1: 7mm due N of the hump for LB Light.
・MBE #2: 238° at 8mm.
・MBE #3: Start at 118° for 24mm from E end of Middle Breakwater.
・MBE #4: Start at 196° for 48mm from E end of Middle Breakwater.

Question 8

Long Beach Breakwater - Reference Points

Answer 8

・LBB #1 Reference Point: 332° at 29mm.
・LBB #2 Reference Point: 7mm due W of the end of LB Breakwater.
・LBB #3 Reference Point: 147° for 56mm.
・LBB #4 Reference Point: 046° for 13mm.

Question 9

LB Breakwater Entrance Lines

Answer 9

・Territorial Sea: Directly between M and LB Breakwaters. Solid gray line.
・Colregs Demarcation Line: Directly between M and LB Breakwaters. Dashed magenta line.
・Regulated Navigation Area Line:Directly between M and LB Breakwaters. Thick Dashed magenta line.

Question 10

LB Entrance Range Line

Answer 10

・Runs from ranges at 175°.
・Dashed until Territorial Sea Line.
・Crosses Territorial Sea Line 22.5mm from either Breakwater.

Question 11

LB W Channel Lines

Answer 11

・From MBE #1 lines goes to MBE #2.

・Line runs at 175° (parallel to the range line) to the end of the chart.

Question 12

LB E Channel Lines

Answer 12

・From LBB #1 lines goes to LBB #2.

・Line runs at 175° (parallel to the range line) to the end of the chart.

Question 13

LB Breakwater Cable Area

Answer 13

・Goes 12mm due N of hump for LB Light.
・Crosses exactly to the E.
・Meets with line 12mm due N of 1mm from end of LB Breakwater.
・Goes 12mm due S of 1mm from end of LB Breakwater.
・Crosses exactly to the W.
・Meets with line 12mm due S of 1mm from E end of Middle Breakwater.

Question 14

LB Pilot Area

Answer 14

・Start at E end of Middle Breakwater. 195.2° until chart edge.
・Start 4mm from W end of LB Breakwater. ・165.5° until chart edge.
・Connect the two above points: the line is right in middle of two Breakwaters.
・Inner Line 2.5mm thick

Question 15

Ferries

Answer 15

・From MBE #3, 223° to the end of the chart.

・From MBE #3, 197° to the end of the chart.

Question 16

G Anchorage Outline

Answer 16

・From MBE #4, Line runs directly at NE corner of E edge of Middle Breakwater. It is parallel to the LB Pilot Area line. Runs for 151mm.
・Next line runs at 249° until the end of the chart.
・From MBE #4, Runs due W until Middle Breakwater Corner Reference Point.

Question 17

Current Sensor & Cable

Answer 17

・Runs from Middle Breakwater, starting between LB Light and tip of Breakwater.
・Runs slightly steeper than LB Pilot Area Line. Ends after 59mm on outer edge of LB Pilot Area Line. Ends 3mm from 33°43’N. “#”

Question 18

F Anchorage Outline

Answer 18

・From LBB #3, points directly at NW corner of W end of LB Breakwater (148). Runs until end of chart.
・From LBB #3, goes due east until the end of the chart.

Question 19

Explosives Anchorage Radius

Answer 19

・Center is 355 at 34mm from where top of LB Breakwater reaches the end of the chart.
・Radius is 146mm.
・(For Chartlet #7: the radius touches the end of the chart at 110.5mm below the LB Breakwater).

Question 20

Regulated Navigation and Security Area Lines

Answer 20

Both start 7mm from end of LB Breakwater and run parallel to F Anchorage outline.

Question 21

1nm Marker Line

Answer 21

・99. Middle of LB Breakwater - Markers (x2): Two markers on the LB Breakwater 112.5mm from end of chart.
・Line goes due S until 1mm above Anchorage F Outline.
・Then turns due E and goes until the end of the chart.

Question 22

D Anchorage Outline

Answer 22

・From LBB #4, points directly N.

・From LBB #4, goes due east until the end of the chart.