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Information of the ENC in China

The Hydrographic and Oceanographic Department, has been publishing the Electronic Navigational Chart(ENC) since1995.
The ENC is made based on IHO standard S-57 Edition 3.1(S-57,E3.1) which was published by IHO in November 2000.
You can buy the document of this standard from the International Hydrographic Bureau(IHB) in Monaco.

The ENC is composed by some size's file which is ENClosed by latitude and longitude.This file is called Cell.And,the Cell has different size on navigational purpose and on using paper charts.
The S-57,E3.1 has 6 different Cells which are from 1st level to 6th level.Each country can decide size of Cell on making ENC from some scale's paper charts freely.

Sea Area View Of China

North Area
East Area
South Area
China Sea Area