Reference    charts:    Charts    No.01103/88001/3315    by    the Maritime Safety Administration of the People’s Republic of China, and  Chart No. 15770 by  the Navigation  Guarantee  Bureau  of the PLA Navy StaffDepartment.
The   coordinate  points   of  this  routeing   system   adopt  the National Geodetic Coordinate System 2000  （Navigational purposes are equivalent to WGS-84 World Geodetic Coordinate System） .
This routeing system consists of Separation Zones, Boundary Lines,  Traffic  Lanes,  Precautionary  Areas,  Areas  to be  Avoided, Recommended Routes, Roundabout and Inshore Traffic Zones.
1.  Separation Zone
1. 1 No. 1 Separation Zone, 0.4 nautical miles wide, is bounded by the line connecting the following four geographical positions.
（ 1）   20°11'.88N, 110°22'.38E
（2）   20°11'.06N, 110°16'.83E
（3）   20°10'.66N, 110°16'.90E
（4）   20°11'.49N, 110°22'.43E
1.2 No.2 Separation Zone, 0.4 nautical miles wide, is bounded by the line connecting the following four geographical positions.
（5）   20°10'.51N, 110°13'.27E
（6）   20°10'.02N, 110°10'.07E
（7）   20°09'.63N, 110°10'. 13E
（8）   20°10'. 11N, 110°13'.34E
1.3 No.3 Separation Zone, 0.4 nautical miles wide, is bounded by the line connecting the following four geographical positions.
（9）     20°09'.26N, 110°05'.22E
（ 10）   20°09'.06N, 110°03'.86E
（ 11）   20°08'.66N, 110°03'.92E
（ 12）   20°08'.87N, 110°05'.28E
1.4 No.4 Separation Zone, 0.2 nautical miles wide, is bounded by the line connecting the following four geographical positions.
（ 13）   20°13'.35N, 110°22'. 15E
（ 14）   20°12'.51N, 110°16'.58E
（ 15）   20°12'.32N, 110°16'.61E
（ 16）   20°13'. 15N, 110°22'. 18E
1.5 No.5 Separation Zone, 0.4 nautical miles wide, is bounded by the line connecting the following four geographical positions.
（ 17）   20°12'.78N, 110°14'.88E
（ 18）   20°12'.72N, 110°14'.45E
（ 19）   20°12'.02N, 110°14'.58E
（20）   20°12'.08N, 110°15'.02E
1.6 No.6 Separation Zone, 0.2 nautical miles wide, is bounded by the line connecting the following four geographical positions.
（21）   20°11'.99N, 110°13'.00E
（22）   20°11'.50N, 110°09'.82E
（23）   20°11'.32N, 110°09'.85E
（24）   20°11'.80N, 110°13'.04E
1.7 No.7 Separation Zone, 0.2 nautical miles wide, is bounded by the line connecting the following four geographical positions.
（25）   20°10'.74N, 110°04'.99E
（26）   20°10'.56N, 110°03'.63E
（27）   20°10'.36N, 110°03'.67E
（28）   20°10'.55N, 110°05'.02E
1.8 No.8 Separation Zone, 0.2 nautical miles wide, is bounded by the line connecting the following four geographical positions.
（29）   20°10'. 19N, 110°22'.63E
（30）   20°09'.36N, 110°17'. 16E
（31）   20°09'. 17N, 110°17'.20E
（32）   20°10'.00N, 110°22'.66E
1.9 No.9 Separation Zone, 0.4 nautical miles wide, is bounded by the line connecting the following four geographical positions.
（33）   20°09'. 13N, 110°15'.55E
（34）   20°09'.07N, 110°15'. 12E
（35）   20°08'.36N, 110°15'.25E
（36）   20°08'.43N, 110°15'.68E
1. 10  No. 10   Separation  Zone,  0.2  nautical  miles  wide,  is bounded  by  the  line  connecting  the  following  four  geographical positions.
（37）   20°08'.81N, 110°13'.58E
（38）   20°08'.33N, 110°10'.34E
（39）   20°08'. 15N, 110°10'.38E
（40）   20°08'.63N, 110°13'.61E
1. 11  No. 11   Separation  Zone,  0.2  nautical  miles  wide,  is bounded  by  the  line  connecting  the  following  four  geographical positions.
（41）   20°07'.58N, 110°05'.48E
（42）   20°07'.37N, 110°04'. 12E
（43）   20°07'. 17N, 110°04'. 15E
（44）   20°07'.38N, 110°05'.50E
2. Boundary Line
2. 1  The Northeast  Boundary  Line  is the  line  connecting  the following two geographical positions:
（ 14）   20°12'.51N, 110°16'.58E
（45）   20°13'.01N, 110°16'.51E
2.2 The Northwest Boundary Line is the line connecting the following two geographical positions:
（21）   20°11'.99N, 110°13'.00E
（46）   20°12'.46N, 110°12'.92E
2.3 The  Southwest Boundary Line is the line connecting the following two geographical positions:
（40）   20°08'.63N, 110°13'.61E
（47）   20°08'.08N, 110°13'.71E
2.4  The  Southeast  Boundary  Line  is the  line  connecting  the following two geographical positions:
（31）   20°09'. 17N, 110°17'.20E
（48）   20°08'.68N, 110°17'.29E
3. Traffic Lane
3. 1 The westbound traffic lane is the area between No. 1, 2 & 3
Separation Zones and No.4, 6 & 7 Separation Zones, with the width of 1.3 nautical miles, and the main traffic direction is 261° .
3.2 The eastbound traffic lane is the area between No. 1, 2 & 3 Separation Zones  and No.8,  10  &  11  Separation Zones, with the width of 1.3 nautical miles, and the main traffic direction is 081° .
3.3  The  northbound  traffic  lane,  is  the  area  between  No.5 Separation Zone, No.4 Separation Zone & the Northeast Boundary Line,  and  No.9  Separation  Zone,  No.8  Separation  Zone  &  the Southeast Boundary Line, with the width of 1.5 nautical miles, and the main traffic direction is 350° .
3.4  The  southbound  traffic  lane,  is  the  area  between  No.5 Separation Zone, No.6 Separation Zone & the Northwest Boundary Line,  and  No.9  Separation  Zone,  No. 10  Separation  Zone  &  the Southwest Boundary Line, with the width of 1.5 nautical miles, and the main traffic direction is 170° .
4 Precautionary Area
4. 1 No. 1 Precautionary Area is bounded by the arc centered on No.49 geographical position    （20°11'.88N/ 110°23'.80E）   with the radius of 2 nautical miles, and the line connecting the following four geographical positions successively.
（ 16）   20°13'. 15N, 110°22'. 18E
（ 1）     20°11'.88N, 110°22'.38E
（4）     20°11'.49N, 110°22'.43E
（29）   20°10'. 19N, 110°22'.63E
4.2 No.2 Precautionary Area is bounded by the line connecting the following twelve geographical positions successively.
（ 15）   20°12'.32N, 110°16'.61E
（20）   20°12'.08N, 110°15'.02E
（ 19）   20°12'.02N, 110°14'.58E
（24）   20°11'.80N, 110°13'.04E
（5）     20°10'.51N, 110°13'.27E
（8）     20°10'. 11N, 110°13'.34E
（37）   20°08'.81N, 110°13'.58E
（34）   20°09'.07N, 110°15'. 12E
（33）   20°09'. 13N, 110°15'.55E
（30）   20°09'.36N, 110°17'. 16E
（3）   20°10'.66N, 110°16'.90E
（2）   20°11'.06N, 110°16'.83E
4.3 No.3 Precautionary Area is bounded by the line connecting the following eight geographical positions successively.
（23）   20°11'.32N, 110°09'.85E
（28）   20°10'.55N, 110°05'.02E
（9）     20°09'.26N, 110°05'.22E
（ 12）   20°08'.87N, 110°05'.28E
（41）   20°07'.58N, 110°05'.48E
（38）   20°08'.33N, 110°10'.34E
（7）     20°09'.63N, 110°10'. 13E
（6）   20°10'.02N, 110°10'.07E
4.4 No.4 Precautionary Area is bounded by the arc centered on
No.53 geographical position    （20°08'.69N/ 110°02'.45E）   with the radius of 2 nautical miles, and the line connecting the following four geographical positions successively.
（27）   20°10'.36N, 110°03'.67E
（ 10）   20°09'.06N, 110°03'.86E
（ 11）   20°08'.66N, 110°03'.92E
（42）   20°07'.37N, 110°04'. 12E
5. Area to be Avoided
5. 1 No. 1 Area to be Avoided is bounded by the circle centered on No.50 geographical position（20°10'.56N/ 110°15'.07E）with the radius of 0.2 nautical miles.
5.2 No.2 Area to be Avoided is bounded by the circle centered on No.51 geographical position（20°09'.55N/ 110°08'.33E）with the radius of 0.2 nautical miles.
6. Recommended Route
Vessels navigating between Yue Hai Ferry North Harbour, Xu Wen  harbour  area  of Zhan  Jiang  Port  and  Yue  Hai  Ferry  South Harbour, Xin Hai harbour area of Hai Kou Port should follow the Recommended  Routes  connecting  No.54  and No.55  geographical positions as well as No.56 and No. 57 geographical positions:
（54）   20°11'.54N, 110°06'.49E
（55）   20°10'.79N, 110°06'.55E
（56）   20°07'.78N, 110°06'.78E
（57）   20°07'. 11N, 110°06'.84E
Ships with true course 176°-356° should pass on the west side of No.52 geographical position  （20°09'.36N/ 110°07'. 12E）  in No.3 Precautionary Area.
7.  The Roundabout
The  Roundabout  is  established  in  No.3  Precautionary  Area, centering on No.2 Area to be avoided. Ships should sail along the roundabout counterclockwise.
8.  Inshore Traffic Zone
8. 1  The Northern inshore traffic zone is the area bounded by No.4 Separation Zone, No.6 Separation Zone, No.7 Separation Zone and the Coastline of Leizhou Peninsula.
8.2  The Southern inshore traffic zone is the area bounded by No.8  Separation  Zone, No. 10  Separation  Zone, No. 11  Separation Zone and the Coastline of Hainan Island.
9.  Special provisions
9. 1   Participating   ships   shall   not   be   exempted   from   the responsibilities and obligations under the International Regulations for Preventing Collision at Sea, 1972.
9.2 Fishing  ships  are prohibited  from  anchoring,  fishing  and farming in the Precautionary Areas and Traffic Lanes.
9.3  Ships should, so far as practicable, avoid crossing traffic lanes, but if obliged to do so, shall report to the competent authority in advance.
9.4 Ships in violation of this Routeing System shall be subject to penalties by the competent authority in accordance with relevant laws, regulations and rules.