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Information of the ENC in Japan

The Hydrographic and Oceanographic Department,Japan Coast Guard(HOD,JCG) has been publishing the Electronic Navigational Chart (ENC) since 1995. 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 get 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.

We are adopting Cell's table which is as follows.

Published ENC

NPNavigational purposeBoundary of chart's scaleSize of CellNumber of cells
1Overview1:1,500,000 > Over 8 degrees30
2General navigation1:300,000 to 1:1,500,0004 degrees38
3Coastal navigation1:80,000 to 1:300,0001 degree154
4Approach1:25,000 to 1:80,00030 minutes169
5Harbour1:7,500 to 1:25,00015 minutes386
6Berthing> 1:7,50015 minutes0
Total    777

Electronic Notice to Mariners (Weekly)

Year No.Date of issueCells No.Date of issueCells No.Date of issueCells No.Date of issueCells No.Date of issueCells
2017 012017/01/0694 022017/01/1346 032017/01/2037 042017/01/2772 052017/02/0389
062017/02/1055 072017/02/1769 082017/02/24100 092017/03/03110 102017/03/1079
112017/03/1772 122017/03/2489 132017/03/3197 142017/04/07149 152017/04/1463
162017/04/2144 172017/04/2839 182017/05/0559 192017/05/1248 202017/05/1934
212017/05/2669 222017/06/0274 232017/06/0942 242017/06/1669 252017/06/2370
262017/06/3066 272017/07/0785 282017/07/1477 292017/07/2142    
                   
                   
                   
                   
                   
2016 12016/01/0868 22016/01/1569 32016/01/2239 42016/01/2985 52016/02/0588
62016/02/1235 72016/02/1947 82016/02/2671 92016/03/0485 102016/03/1146
112016/03/1854 122016/03/2573 132016/04/01115 142016/04/0845 152016/04/1546
162016/04/2241 172016/04/2950 182016/05/0652 192016/05/1333 202016/05/2030
212016/05/2768 222016/06/0396 232016/06/1026 242016/06/1727 252016/06/2453
262016/07/0171 272016/07/0836 282016/07/1536 292016/07/2247 302016/07/2953
312016/08/0572 322016/08/1229 332016/08/1945 342016/08/2682 352016/09/0293
362016/09/0940 372016/09/1663 382016/09/2364 392016/09/3062 402016/10/0786
412016/10/1463 422016/10/2140 432016/10/2864 442016/11/0483 452016/11/1142
462016/11/1869 472016/11/2549 482016/12/0289 492016/12/0949 502016/12/1657
512016/12/2375                
2015 12015/01/0968 22015/01/1649 32015/01/2349 42015/01/3080 52015/02/0691
62015/02/1353 72015/02/2038 82015/02/2775 92015/03/0687 102015/03/1356
112015/03/2065 122015/03/27107 132015/04/03108 142015/04/1051 152015/04/1751
162015/04/2470 172015/05/0174 182015/05/0831 192015/05/1530 202015/05/2261
212015/05/2979 222015/06/0581 232015/06/1250 242015/06/1958 252015/06/2696
262015/07/0393 272015/07/1045 282015/07/1742 292015/07/2461 302015/07/3182
312015/08/0773 322015/08/1434 332015/08/2153 342015/08/2876 352015/09/0494
362015/09/1140 372015/09/1825 382015/09/2553 392015/10/0280 402015/10/0929
412015/10/1623 422015/10/2340 432015/10/3081 442015/11/0692 452015/11/1337
462015/11/2044 472015/11/2740 482015/12/0495 492015/12/1172 502015/12/1856
512015/12/2574                
2014 12014/01/1074 22014/01/1733 32014/01/2451 42014/01/3175 52014/02/0777
62014/02/1486 72014/02/2155 82014/02/2870 92014/03/07107 102014/03/14107
112014/03/2183 122014/03/2897 132014/04/04123 142014/04/1149 152014/04/1846
162014/04/2577 172014/05/0272 182014/05/0972 192014/05/1647 202014/05/2362
212014/05/3084 222014/06/0683 232014/06/1358 242014/06/2041 252014/06/2769
262014/07/0485 272014/07/1148 282014/07/1841 292014/07/2549 302014/08/0194
312014/08/08127 322014/08/1552 332014/08/2244 342014/08/2982 352014/09/05131
362014/09/1252 362014/09/1978 382014/09/2671 392014/10/0379 402014/10/1048
412014/10/1775 422014/10/2474 432014/10/3151 442014/11/0797 452014/11/1444
462014/11/2171 472014/11/2877 482014/12/0599 492014/12/1266 502014/12/1930
512014/12/2651                
2013 12013/01/1174 22013/01/1853 32013/01/25136 42013/02/0179 52013/02/0839
62013/02/1556 72013/02/2248 82013/03/0199 92013/03/0837 102013/03/1556
112013/03/2250 122013/03/29104 132013/04/05108 142013/04/1254 152013/04/1964
162013/04/2676 172013/05/0379 182013/05/1053 192013/05/1753 202013/05/2447
212013/05/3185 222013/06/07119 232013/06/1453 242013/06/2143 252013/06/2871
262013/07/0589 272013/07/1244 282013/07/1957 292013/07/2652 302013/08/0292
312013/08/0954 322013/08/1652 332013/08/2357 342013/08/3058 352013/09/0691
362013/09/1342 372013/09/2043 382013/09/2764 392013/10/04103 402013/10/1144
412013/10/1871 422013/10/2550 432013/11/01107 442013/11/0862 452013/11/1573
462013/11/2247 472013/11/2988 482013/12/0696 492013/12/1353 502013/12/2050
512013/12/2788                
2012 12012/01/0672 22012/01/1355 32012/01/2077 42012/01/2758 52012/02/0398
62012/02/1072 72012/02/1756 82012/02/2463 92012/03/02108 102012/03/0969
112012/03/1669 122012/03/2368 132012/03/3064 142012/04/0675 152012/04/1360
162012/04/2061 172012/04/2749 182012/05/0468 192012/05/1158 202012/05/1854
212012/05/2596 222012/06/01136 232012/06/08153 242012/06/15197 252012/06/22151
262012/06/29157 272012/07/0665 282012/07/1337 292012/07/2049 302012/07/2746
312012/08/0377 322012/08/1038 332012/08/1765 342012/08/2437 352012/08/3151
362012/09/0796 372012/09/1444 382012/09/2157 392012/09/2864 402012/10/0583
412012/10/1266 422012/10/19104 432012/10/2678 442012/11/02162 452012/11/0993
462012/11/1698 472012/11/23101 482012/11/30103 492012/12/07169 502012/12/1496
512012/12/2170 522012/12/2874            

Electronic Notice to Mariners (Monthly)

Year No.Date of issueCells No.Date of issueCells No.Date of issueCells No.Date of issueCells
2011 832011/01/28249 842011/02/25249 852011/03/25234 862011/04/29332
872011/05/27178 882011/06/24222 892011/07/29220 902011/08/26163
912011/09/30142 922011/10/28125 932011/11/25108 942011/12/23163
2010 712010/01/29127 722010/02/26141 732010/03/26249 742010/04/30219
752010/05/28204 762010/06/25142 772010/07/30159 782010/08/27126
792010/09/24155 802010/10/29213 812010/11/26209 822010/12/24307

If you want to buy ENCs, please contact to Japan Hydrographic Association (JHA).