The fourth realignment of Dachan channel and the adjustment of construction area of Immersed Tunnel

Safer navigation, simpler navigation and cleaner water area Document No.: Yue hang Tong (Qiao) [2021] No.

The relevant matters are hereby notified as follows: 1 The fourth realignment of Dachan channel.

2szsd10n22 ° 35 ′ 17.39 “E113 ° 47 ′ 51.99” special mark, Morse signal K, yellow, cycle 12s.

it is planned to adjust the navigation aids during February 13-16.

3szsd11n22 ° 35 ′ 47.4 “E113 ° 47 ′ 48.33” special mark, Morse signal K, yellow, cycle 12s.

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2.

4szdd1n22 ° 35 ′ 59.27 “E113 ° 48 ′ 19.23” special mark, Morse signal o, yellow, cycle 12s.

Lifting Clutches

5、 The adjustment of the above construction operation area and the fourth rerouting of Dachan channel will be completed and put into use at 1800 hours on February 16, 2022, and the original Dachan channel will be closed at the same time.

0010 release date: 2022-2-9 all relevant units and ships: due to the needs of deep and medium channel construction, the Dachan channel has been rerouted for the fourth time and the immersed tunnel construction area has been adjusted.

navigation aids name position (National 2000 coordinate system) light quality 1 navigation 15n22 ° 35 ′ 3.20 “E113 ° 49 ′ 15.5” right sign, green single flash 4s2 navigation 16n22 ° 34 ′ 57.5 “E113 ° 49 ′ 3.3” left sign, 13 ° large scale flash, 19 ° large scale flash, 19 ° single scale flash, 23.48 ′ single scale flash on the left side, 19.48 ″ 4s25 ′ single scale flash on the right side, 19.48 ″ 4s25 ′ single scale flash on the left side, 19.48 ″ 4s25 ′ single scale flash on the left side, 23.48 ″ 4s26 ′ 4s26 ″ 4s26 ″ 4s25 ′ large scale flash on the left side, 23.48 ′ 4s26 ″ single scale flash on the right side, Red single flash 4s8 large shovel 9n22 ° 36 ′ 30.2 “E113 ° 47 ′ 50.6” right side sign, green single flash 4s9 Airport Branch 4-1n22 ° 36 ′ 7.69 “E113 ° 47 ′ 51.58” special sign, Morse signal K, yellow, cycle 12s10 Airport Branch 5-1n22 ° 36 ′ 5.29 “E113 ° 47 ′ 55.17” special sign, Morse signal K, yellow, cycle 12s II Adjust the construction operation area of immersed tunnel (I) position of the adjusted construction operation area: 1 Construction water area of lot S08: A: 22 ° 35 ′ 47.4 ″ n, 113 ° 47 ′ 48.33 ″ e, B: 22 ° 35 ′ 17.39 ″ n, 113 ° 47 ′ 51.99 ″ e, C: 22 ° 35 ′ 16.19 ″ n, 113 ° 48 ′ 38.24 ″ e, D: 22 ° 35 ′ 55.29 ″ n, 113 ° 48 ′ 11.23 ″ E.

Construction waters on the east side of immersed tunnel and East artificial island: A: 22 ° 35 ′ 59.27 “n, 113 ° 48 ′ 19.23” E, B: 22 ° 35 ′ 16.13 ″ n, 113 ° 49 ′ 2.32 ″ e, C: 22 ° 35 ′ 17.95 ″ n, 113 ° 49 ′ 17.18 ″ e, D: 22 ° 36 ′ 10.63 ″ n, 113 ° 48 ′ 45.18 ″ e, e: 22 ° 35 ′ 25.93 ″ n, 113 ° 49 ′ 32.43 ″ e, F: 22 ° 36 ′ 29.64 ″ n, 113 ° 48 ′ 53.73 ″ e, G: 22 ° 36 ′ 21.62 ″ n 113°48′37.44″E,H:22°35′34.00″N、113°49′50.5″E,I:22°36′40″N、113°49′16″E,J:22°35′19.66″N、 The position parameters of the construction warning mark within the water area of the 113 ° 48 ′ 50.37 ″ e ten point connecting line (II) after adjustment are as follows: serial number, navigation mark name position (National 2000 coordinate system), light quality 1szsd9n22 ° 35 ′ 16.79 “E113 ° 48 ′ 15.12” special mark, Morse signal o, yellow, cycle 12s.

Dachan channel moves eastward to the position E30 of the immersed pipe foundation trench of the deep and medium channel.

The location parameters are as follows: No.

3、 Schematic diagram of the position of the channel and construction area after the fourth realignment of Dachan channel: IV.

After the realignment, the original navigation aids are rearranged.

During the navigation aids adjustment, please strengthen the lookout of passing ships, keep sailing along the original channel, and obey the command of the on-site support command ship.

5szdd2n22 ° 35 ′ 16.43 “E113 ° 49 ′ 4.78” special mark, Morse signal o, yellow, cycle 12s.

6szdd3n22 ° 35 ′ 18.77 ″ E113 ° 49 ′ 15.88 ″ special mark, Morse signal o, yellow, cycle 12s.