This file was last updated 11/02/2026


SECTION 1 - IMPORTANT GENERAL INFORMATION - Updated 23/11/2010

PRIMAR DISCLAIMER TEXT

PRIMAR has made all reasonable efforts to ensure that ENC data contained in the service supplied under this agreement is accurate. The ENC data is supplied by national Hydrographic Offices, which are responsible for the accuracy of their own chart information. 
Moreover, PRIMAR shall not be liable (except in case of death or personal injury solely and directly attributable to any negligent compilation or transcription by PRIMAR) in contract, tort, under statute or otherwise.

The ENCs contained in the PRIMAR service meet SOLAS chart and carriage requirements when kept up to date and used on an ECDIS with suitable backup.

DEVELOPMENT AND USE OF ECDIS

Considerable progress has been made in the development of Electronic Chart Display and Information Systems (ECDIS), the navigational systems which make use of ENC data.  Many are being developed and a number have now achieved type approval.  Mariners should be aware of the significant changes in navigational practice required by the introduction of ECDIS, and of the need to manage these changes in a careful and prudent manner.  It should also be noted that the appearance and content of the data displayed in electronic charts may differ substantially from the same or similar data in the paper chart form.

Because of the developing nature of ECDIS and because there is as yet only limited ENC data availability, there has so far been little experience of the practical, operational use of ECDIS.  Mariners must therefore be aware of the user training requirement.  They should satisfy themselves that their ECDIS provides all the navigational functionality that they will need, and that they are familiar with the operation of this functionality.  For example, some early ECDIS systems may be unable to display the cautionary notes which appear on the paper chart and are included in the ENC.  Hence, care is required while experience is gained in the practical use of ECDIS.  Some national maritime administrations have issued advice relating to the introduction of ECDIS, and mariners should ensure that they are aware of, and conversant with, that advice.

ECDIS information (Updated 23/11/10)

Mariners using ECDIS are reminded not to rely solely on automated voyage planning and monitoring checks and alarms. Recent preliminary investigation indicates that some ECDIS may not display certain combinations of chart features and attributes correctly and on rare occasions may fail to display a navigationally significant feature. Mariners should always undertake careful visual inspection of the entire planned route using the "other / all" display mode to confirm that it, and any deviations from it, is clear of dangers. 

"ISOLATED DANGER" DISPLAY ISSUE IN ECDIS (Updated 14/06/21)
 
PRIMAR has been informed that, under certain circumstances, some ECDIS are not displaying the Isolated Danger Symbol as expected.
 
We have been advised that this does not affect the route checking, detection of dangers or anti-grounding functions of ECDIS, and by selecting the OTHER display category, all features are visible.
 
The issue is resolved by issuing New Editions - the ENC producers have been made aware of the issue and affected ENCs will be updated with New Editions when possible.


SECTION 2 - HYDROGRAPHIC OFFICES´ INFORMATION - Updated 07/01/22


AU, PG and SB ENC (published by AHO) - Updated 07/01/22

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The Australian Hydrographic Office (AHO) publishes AU, PG and SB ENCs covering Australian, Australian Antarctic Territory, Papua New Guinea and Solomon Islands waters.

CONVERSION OF AU or SB-CODED ENCS TO PG-CODED ENCS ? Updated 31 December 2021
A programme of work is underway to convert certain AU and SB-coded ENCs to PG-coded ENCs. As part of the testing of these new ENCs, it has been identified that there is the potential for a small number of ECDIS users to experience display problems with the adjusted AU / SB-coded ENCs on ECDIS Transas version 3.0.340 Build 5225. Users are advised to use caution and examine these ENCs at the voyage planning stage. 
The ENCs are: PG407156/SB407156, PG407155/SB407155, PG408155/SB408155, PG308154/SB308154, PG311145/AU311145, PG311144/AU311144, PG310144/AU310144, PG410143/AU410143, PG410142/AU410142, PG410141/AU410141, PG411141/AU411141, PG411140/AU411140, PG310140/AU310140

GUIDANCE ON ECDIS FOR SHIPS CALLING AT AUSTRALIAN PORTS - Updated 24/03/20

When entering Australian Ports please be reminded of the AMSA Marine Notice 7/2017 (https://www.amsa.gov.au/vessels-operators/regulations-and-standards-vessels/marine-notices) which highlights areas relevant to the safe and proper operation of ECDIS for ships visiting Australian ports and provides information on AMSA's expectations for ECDIS compliance during Port State Control (PSC) inspections. 
 
Ships found not complying with AMSA Marine Notice 7/2017 may be detained.

AMSA are concerned with software quality assurance in ECDIS and detection of operating anomalies using the ECDIS Data Presentation and Performance Check dataset.  Other areas of interest include chart carriage requirements, mode of ECDIS operation and ECDIS training requirements.  Specifically PSC inspectors will take account of:

* appropriate declaration of ECDIS equipment in the Record of Equipment - Safety Equipment Certificate
* listing of ECDIS as critical equipment in the Safety Management System (SMS)
* documented procedures and instructions for use of ECDIS are included in the SMS and that they are understood by all officers responsible for navigation
* ECDIS type approval certificate, confirming compliance with relevant IMO performance standard and the International Electrotechnical Commission (IEC) test standard
* ECDIS software is maintained to the latest applicable IHO standards
* use of latest edition official ENCs, updated and corrected to the latest available updates and notices to mariners
* adequate independent back-up arrangements (as detailed on the Record of Equipment), ensuring safe navigation for the remainder of the voyage in the event of an ECDIS failure
* approved ECDIS generic and familiarisation training has been undertaken by the master and officers in charge of navigation
* conformance and alignment with input from sensors (e.g. heading, speed and rate of turn) and presentation of such information on the ECDIS display
* evidence of periodic tests and checks of the ECDIS carried out in accordance with the SMS and the manufacturer's requirements
* demonstration of operational competency by the ship's navigating officers (e.g. safety checking of a voyage plan)
* ECDIS settings are appropriate to the ship's dimensions and area of operations (e.g. cross track error, anti-grounding cone, safety depth and contour).

DATA APPEARANCE - Updated 29/01/21

Australian published ENCS contain either the same or greater levels of detail than the corresponding paper chart.  In particular ENCs may contain 1-metre contours that are not available in the paper chart.  This will enable the full benefits of ECDIS and particularly its safety depth alarm function to be used most effectively.  
The geographical limits of individual ENCs are likely to differ from the geographical limits of corresponding paper charts.  To interpret geographical locations of AHO published ENC from their file numbers, see the Guide to the AHO?s ENC Numbering System fact sheet at https://www.hydro.gov.au/factsheets/factsheets.htm

UPDATES - Updated 24/03/20

Updates for AU, PG and SB ENCs published by the Australian Hydrographic Office are issued weekly. They include all Permanent, Temporary and Preliminary Updates.  For updates to Australian Hydrographic Publications (nautical publications), and any Paper Nautical Charts used as a backup to ECDIS, mariners should consult the fortnightly Australian Notices to Mariners available via the AHO website at www.hydro.gov.au.


IMPORTANT NOTICE - Updated 24/03/20

All AU, PG and SB ENCs published by the Australian Hydrographic Office include all significant hydrographic information assessed as suitable for use (including data which may be of known or unknown quality) at date of compilation.  Significant changes are promulgated via ENC Update or ENC New Edition as appropriate, as well as by Australian Notices to Mariners.   All reasonable efforts have been made to ensure the accuracy and completeness of the information, including third party information, incorporated in this product.   The AHO regards third parties from which it receives information as reliable, however the AHO cannot verify all such information and errors may therefore exist.   Where possible, indications regarding the reliability of information are noted or symbolised in the product.   Users should familiarise themselves with the meaning of any notes or symbols, including those described in AHP20 Mariners Handbook for Australian Waters.   The AHO does not accept liability for errors in third party information or the inappropriate use of Australian published ENCs.

COPYRIGHT - Updated 24/03/20

Certain hydrographic information in this product is Copyright Commonwealth of Australia; and is used under licence with the permission of the Australian Hydrographic Office.  All rights reserved.  Apart from the uses permitted to the licensee under the user licence agreement, the information may not be copied, reproduced, translated or reduced to any electronic medium or machine readable form, in whole or part, without the prior written consent of the Australian Hydrographic Office.

BD (Bangladesh) - Updated 20/03/2020
Mariners should be aware that the Bangladesh Navy Hydrographic and Oceanographic Centre promulgates navigational information through its website www.bnhoc.navy.mil.bd.  This information are not always intended to correct BNHD products but may be significant to navigation.

1U (Taiwan) - Updated 15/02/19

Taiwan ENCs named using "1U" prefix and distributed via PRIMAR in S-63 format are official electronic navigational charts produced by Taiwan ENC Center, Ministry of the Interior (MOI), issued by MOI for navigational use. 
For ships navigating in the coastal waters or entering ports of Taiwan, only these ENCs from Taiwan may be used with ECDIS to meet the chart carriage requirement as imposed by the SOLAS convention.

Taiwan ENCs are produced based on the most recent hydrographic surveys and data sources, including those from the National Land Surveying and Mapping Center of MOI, the Naval Meteorological and Oceanographic Office (NMOO), the Maritime and Port Bureau (MPB), and port authorities. 
It should be noted that the appearance and content of Taiwan ENCs may differ substantially from those in NMOO's paper charts and charts compiled from them.

ECDIS systems use IHO S-62 List of Producer Codes to identify the source of ENCs and manage chart data. 
Considering the difficulty in updating the S-62 list coded into ECDIS systems onboard vessels, Taiwan ENCs are issued using the code already listed in S-62, the "1U (7982)" code of ENC Center, National Taiwan Ocean University. 

Taiwan ENCs may show up in ECDIS systems with a "non-ENC" mark or indication. That is because "1U" code is listed in the third part of S-62. 
When data in display are not ENCs with producer codes in the first two parts of S-62, namely "IHO Member States" and "Other States", ECDIS shall provide a "non-ENC" indication according to the standard IEC 61174. 
Such indication can be ignored in the case of Taiwan ENCs.

Point of contact for further information on Taiwan ENCs:

ENC Center, National Taiwan Ocean University
e-mail: sjchang@mail.ntou.edu.tw

Taiwan ENC Center, Dept. of Land Administration, Ministry of the Interior
e-mail: enc@moi.gov.tw

BE (Belgium) - Updated 21/02/20

Belgium ENCs are kept updated by issuing updates  or new editions, at least in line with the fortnightly Belgium Notices to Mariners (including the Temporary and Preliminary Notices).

CA (Canada) - Updated 07/02/2025

© His Majesty the King in right of Canada, Department of Fisheries and Oceans, Canadian Hydrographic Service (CHS). All rights reserved. No part of this product may be reproduced in any material form, including photocopying, publication or storing by electronic means, without the prior written permission
of CHS. To request permission to reproduce CHS content, refer to www.charts.gc.ca. Users are subject to the CHS End User Licence Agreement ("EULA"), which can be found at www.charts.gc.ca

Obligations regarding the carriage, updating and use of nautical charts and publications are set out in Division 6 of the Navigation Safety Regulations, 2020, made pursuant to the Canada Shipping Act, 2001, as administered and enforced by Transport Canada.

For a current list of charts, mariners should refer to the CHS website at charts.gc.ca. Mariners should also refer to navigational warnings (NAVWARNs) for information regarding changes to navigational aids and current marine activities or hazards, available online at nis.ccg-gcc.gc.ca/public/rest/menu/en/topics or broadcast by Marine Communications and Traffic Services.

CHS contact: CHSInfo@dfo-mpo.gc.ca

© Sa Majesté le Roi du chef du Canada, ministère des Pêches et des Océans, Service hydrographique du Canada (SHC). Tous droits réservés. Il est interdit de reproduire toute partie de ce produit sous quelque support matériel que ce soit, y compris la photocopie, la publication ou le stockage par des moyens
électroniques, sans l'autorisation écrite préalable du SHC. Pour demander l'autorisation de reproduire du contenu du SHC, veuillez consulter le site www.charts.gc.ca.

Les utilisateurs sont assujettis à l'Accord de licence d'utilisateur final du SHC, accessible à l'adresse www.charts.gc.ca.

Les obligations relatives au transport, à la mise à jour et à l'utilisation des cartes marines et des publications nautiques sont énoncées dans la division 6 du Règlement de 2020 sur la sécurité de la navigation pris en vertu de la Loi de 2001 sur la marine marchande du Canada, telle qu'elle est
administrée et mise en application par Transports Canada.

Pour obtenir une liste à jour des cartes marines, les navigateurs doivent consulter le site Web du SHC à l'adresse charts.gc.ca.

Les navigateurs doivent également consulter les avertissements de navigation (AVNAV) pour obtenir de l'information sur les changements apportés aux aides à la navigation et sur les activités maritimes courantes ou les dangers. Ces avertissements sont accessibles en ligne à l'adresse nis.ccg-
gcc.gc.ca/public/rest/menu/fr/topics ou sont diffusés par les Services de communication et de trafic maritimes.

Pour communiquer avec le SHC : CHSInfo@dfo-mpo.gc.ca

CU (Cuba) - Updated 24/08/18

Known Issue: It has been identified that the Cuban HO (ONHG) are having technical issues with their software which is resulting in unusual Update application date values (UADT). IC-ENC can confirm that the content is being updated for safety related changes

D2 (Faroe Islands) - Updated 10/03/23

Known Issue: It has been identified that some ECDIS which have not been updated to the latest version of S-62 will flag that there is no ENC data available. ENCs coded by IC-ENC have passed S-58 validation checks, the D2 code was added to S-62 in June 2021. When navigating on Faroese coded ENCs and this issue is experienced, mariners are advised to contact their ECDIS provider and update their systems. 
EA (EAST ASIA) - Updated 08/01/19

The SCS ENC 3rd Edition comprising the following EA ENC cell:

EA200004 

South China Sea Electronic Navigational Charts
Conditions of Use:

Intellectual Rights

All property rights (including but not limited to the Intellectual Property Rights) of the South China Sea Electronic Navigational Charts (hereafter called the Data) remains the property of the East Asia Hydrographic Commission (EAHC). No part of the Data may be reproduced either in whole or in part, without the prior permission of the EAHC. The Data may not be sold, hired, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording or otherwise without the prior permission of the EAHC. You may not reverse engineer, decompile, disassemble or otherwise reduce the Data to a human perceivable form for distribution to any third party. You may not modify, adapt the Data or create derivative works based on the Data.

Liability

The EAHC gives no warranty that the Data is error-free and the EAHC shall in no way be held liable for any loss or damage which may be suffered by the users for any damage or loss he may suffer in any use or attempted use of the Data. Except as expressly provided in this agreement, no warranty, condition, undertaking or term expressed or implied is given or assumed by the EAHC.

Termination

Users are allowed to use the Data as long as in accordance with the terms of this agreement or until notified by the EAHC. On termination the Data stored on ECDIS systems, computer or others storage media must be deleted.

Updating

The users shall keep their copy of Data up-to-date by obtaining the updating files, at regular intervals at the South China Sea Electronic Navigational Charts web site (www.scsenc.org.hk).  Attention is drawn to the users that the issue of the new version of the Data by the EAHC will automatically render previous versions of the Data outdated.


FI (FINLAND) (Updated 17/04/24)

According to the SOLAS convention (IMO Marine Safety Committee Resolution 99(73) which came into force July 1st 2002) this official Electronic Navigational Chart (ENC) produced by the Finnish Transport and Communications Agency Traficom can be used as a primary chart when the mariner is using a type approved ECDIS system.

The Finnish Transport and Communications Agency Traficom is only liable for the navigational data covering the authorised fairways.

This ENC is protected by copyright and it may not be reproduced without the prior written consent of the Finnish Transport and Communications Agency Traficom.

Topmarks shown on buoy symbols in the ENC do not exist on the actual buoys.

Buoys and beacons marking the main fairways are equipped with radar reflectors.

All feedback is very welcome to the address below. 

Point of contact:

Finnish Transport and Communications Agency Traficom
Hydrographic Office
P.O. BOX 320
FI-00059 TRAFICOM
FINLAND

Tel. +358 29 534 5000

e-mail: copyright@traficom.fi

Important notice about the Saimaa deep-water route

The maximum authorised draught in the Saimaa deep-water route is 4.35m. According to IHO standard S-57, which determines the data content and technical implementation of ENC cells, the depth of a channel can be expressed with one decimal digit only. Therefore ENC cells show the maximum authorised draught of the route as 4.3m although the actual draught is 4.35m.
For further information on the Saimaa area channels and their depths please contact the Finnish Transport and Communications Agency Traficom.


FR (France) (Updated 22/02/12)

Les ENC du service hydrographique et océanographique de la marine (SHOM), numérotées FRXXXXXX.YYY, sont dérivées des cartes marines papier et archives du SHOM. 
Elles sont conçues pour être utilisées conjointement avec d'autres documents publiés par le SHOM : Le Guide du Navigateur (en particulier le Volume 1 pour les informations concernant les cartes marines, leur précision et leurs limitations), les Instructions Nautiques, les Livres des Feux et Signaux de brume, les Ouvrages de radiosignaux, les annuaires des marées, les atlas de courants de marée. 
Le Groupe d'Avis aux Navigateurs permet la tenue à jour de ces documents. 
Utilisez toujours l'ENC ou la carte marine papier appropriée la plus détaillée et tenez à jour les ENC, les cartes marine papiers et les ouvrages nautiques en votre possession.
Pour toute demande d'information ou remarque relative au contenu des ENC du SHOM, vous pouvez vous adresser à : SHOM, 13 rue du Chatellier - CS 92803 - 29228 BREST CEDEX 2, FRANCE ou à cartesel@shom.fr.

Ce produit contient des éléments soumis au copyright, provenant du SHOM ou d'autres organismes. Les demandes de reproduction doivent être adressées à : SHOM, 13 rue du Chatellier - CS 92803 - 29228 BREST CEDEX 2, FRANCE.

The ENC produced by the French Hydrographic Office (SHOM), numbered FRXXXXXX.YYY, are derived from paper charts and archives of SHOM.
These ENC are to be used in conjunction with other SHOM publications : "Guide du Navigateur" (especially Volume 1 for information on the use of charts, their accuracy and limitations), sailing directions, lists of lights, lists of radiosignals, tide tables, and tidal streams atlases. 
The Notices to Mariners ("Groupe d'Avis aux Navigateurs") allows the updating of these documents.
Always use the largest scale appropriate ENC or paper chart and keep your ENCs, paper charts and publications updated.
For further information or comments about the content of French ENCs, please apply to : SHOM, 13 rue du Chatellier - CS 92803 - 29228 BREST CEDEX 2, FRANCE or to cartesel@shom.fr.

French ENCs include information protected by copyright and property of SHOM or other organisations. Reproduction consent shall be asked for to : SHOM, 13 rue du Chatellier - CS 92803 - 29228 BREST CEDEX 2, FRANCE.


GB (Great Britain) - Updated 16/04/21
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© Crown Copyright 2019. All Rights Reserved. This product is protected by Crown copyright and international copyright law. It is derived from Crown copyright information and copyright information published by other organisations. No part of this product may be reproduced either in whole or in part, except as specifically required by the host system, without the prior permission of the copyright holders. The product may not be sold, hired, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording or otherwise without the prior permission of the copyright holders. Applications for the copyright holders' permission to reproduce any part of the product should be directed in the first instance to the Licensing Manager, UK Hydrographic Office, Taunton, Somerset TA1 2DN, United Kingdom.

While the UKHO has made all reasonable efforts to ensure the ENC data supplied is accurate, it may not always be complete, up to date or positioned to modern surveying standards and therefore no warranty can be given as to its accuracy. The mariner must be the final judge of the reliance placed on the information given, bearing in mind the particular circumstances, the needs of safe and prudent navigation, local pilotage guidance and available navigational aids.

Updates for UKHO ENCs are issued weekly. See www.admiralty.co.uk.

NON-WGS84 COMPATIBLE DATUMS

A number of GB cells are derived from charts that cannot accurately be referred to WGS84 Datum. Mariners are warned that these differences MAY BE SIGNIFICANT TO NAVIGATION and are therefore advised to confirm GPS positions shown in the chart display using alternative navigational techniques particularly when closing the shore or navigating in the vicinity of dangers.
Such cells contain a warning encoded as the name of a Sea Area feature covering the cell: "This chart cannot be accurately referenced to WGS84 Datum; see caution message". They are intended for use with this warning continuously displayed and should not be used otherwise.

CATEGORY OF ZONE OF CONFIDENCE IN DATA (CATZOC) VALUES:

The boundaries between Quality of Data (M_QUAL) areas with different CATZOC values for certain cells have been taken from the Source Diagram (SD) on the equivalent paper chart and are therefore approximate. 

For these M_QUAL areas, the CATZOC values are based on the simplified summary provided in the SD and therefore represent the lowest categorisation assigned to any survey in each defined group of surveys.
The degree of simplification also means that it has not been possible to identify minor gaps within survey coverage and mariners should be aware that such gaps (where lower quality survey data has been used in the compilation of the chart) may exist. 

Some ENCs are based on small scale planning charts that do not have a Source Diagram. The UKHO has adopted a policy of allocating a CATZOC value of 'D' to all Quality of Data (M_QUAL) areas of such charts though it recognizes that many of these areas are based on higher quality data.

All interim CATZOC values will be replaced by definitive ones in due course.

ID (INDONESIA) - Updated 02/01/24
--------------

Published by Hydro-Oceanographic Centre of Indonesia Navy (PUSHIDROSAL)
Jl Pantai Kuta V no.1, Ancol Timur
Jakarata 14430, Indonesia

Tel : +62 (21) 64714810, Fax : +62 (21) 64714819
e-mail : infohid@pushidrosal.id
web : www.pushidrosal.id 

DATA APPEARANCE
QUALITY OF DATA. M_QUAL - The boundaries between Quality of Data (M_QUAL) areas with different CATZOC values for certain cells have been taken from the Source Data Diagram (SDD) on the equivalent paper chart and they should therefore be considered as approximate. 
MINIMUM SCALE. The SCAMIN step values for object and attribute combinations have been applied to Indonesia ENCs following international standards.

UPDATES
Updates for Indonesia ENCs are issued in line with the weekly Indonesia Notices to Mariners booklet. Indonesia ENC updates are issued for all Permanent, Temporary and Preliminary Notices to Mariners. Indonesia Notices to Mariners can be downloaded from the PUSHIDROSAL website at www.pushidrosal.id 

IMPORTANT NOTICE
The information contained in this publication has been either produced by, or supplied to, PUSHIDROSAL and was current as at the date of compilation. Significant hydrographic information is updated by a weekly Notices to Mariners service. All reasonable efforts have been made to ensure accuracy and completeness of the contents of Indonesia ENCs. PUSHIDROSAL regards third parties from which it receives information as reliable, however PUSHIDROSAL cannot verify all such information and errors may therefore exist.

ENC DATUMS
A number of Indonesia cells are derived from paper charts that cannot accurately be referred to WGS84 Datum, and refer to a local datum. Positions obtained from Global Navigation Satellite Systems, such as GPS, are normally referred to WGS84 Datum. The differences between satellite-derived positions and positions on these cells cannot be accurately determined. Old cells contain a "Chart Accuracy" Caution warning Mariners about accuracy issues due to very old data or different Datum; these can be significant particularly when closing the shore or navigating in the vicinity of dangers. In these cells any case, the quality of data specified in the M_QUAL parameters is set considering also this kind of issues.

COPYRIGHT
Pushidrosal Copyright. All rights reserved. This publication is protected by Pushidrosal Copyright. No part of this product may be reproduced in any format without the prior permision of the copyright owners. Application for the copyright owners? permission to produce any part of this publication should be addresses in the first instance to the Indonesian Chief Hydrographer.

IT (ITALY) - Updated 19/10/18

GENERAL WARNING - Only official ENCs and nautical publications should be used, provided by authorized distributors, as listed in the Italian HO website. The IIM is not responsible for Nautical Charts, Electronic Charts and Publications that have not been acquired at or through its authorized distribution channels. 
All Italian charts and ENCs have to be used in conjunction with other Italian Nautical Publications, such as Introduction to Italian Sailing Directions (I.I. 3146), Italian Sailing Directions (I.I. 3201 - 3208, 8 volumes), Italian List of Lights and Fog Signals (I.I. 3134), List of Radio signals (I.I. 3128 and I.I. 3130) and other IIM publications.
Attention is drawn to the statement in A.N. n° 16 of the Introduction to Italian Sailing Directions (I.I. 3146) concerning the use of navigational information provided by the IIM. This includes the following caution which applies to all charts, paper and electronic: "Finally, mariners must never forget that a nautical chart can never be perfectly coincident with reality, being only one of its possible representations; they must always consider the possible presence of particular dangers, prescriptions and regulations, especially near the coast, and therefore consult all the relevant Nautical Documentation as well as general and local regulations.
An incorrect or improper use of Nautical Documentation does not guarantee the adequate and necessary levels of safety, especially when sailing near the coast".

COPYRIGHT - All the Italian cells included in the present exchange set are Official Nautical Charts as per Italian Law 2.2.1960. They include information protected by Copyright. Reproduction is prohibited without the Istituto Idrografico della Marina's explicit consent.

UPDATES - Updates for IT ENCs are generally issued every two weeks. Updates are issued for all Permanent Chart-Correcting and Preliminary Notices to Mariners. Mariners should consult the Italian Notices to Mariners (pdf format) at http://www.marina.difesa.it/conosciamoci/organizzazione/comandienti/scientifici/idrografico/Pagine/home.aspx

ENC DATUMS - A number of IT cells are derived from paper charts that cannot accurately be referred to WGS84 Datum, and refer to a local datum (Bessel, Rome 1940) or a European Datum (1950). Positions obtained from Global Navigation Satellite Systems, such as GPS, are normally referred to WGS84 Datum. The differences between satellite-derived positions and positions on these cells cannot be accurately determined; the estimated differences are detailed in the HORDAT & SHIPAM attributes of M_HOPA. Old cells contain a "Chart Accuracy" Caution warning Mariners about accuracy issues due to very old data or different Datum; these can be significant particularly when closing the shore or navigating in the vicinity of dangers. In these cells any case, the quality of data specified in the M_QUAL parameters is set considering also this kind of issues.

M_QUAL - The boundaries between Quality of Data (M_QUAL) areas with different CATZOC values for certain cells have been taken from the Source Data Diagram (SDD) on the equivalent paper chart and they should therefore be considered as approximate. This may be reported in a specific Caution.

JP (JAPAN) (Updated 12/07/10)

Japanese ENC:
    Published by Japan Coast Guard  
              2-1-3, Kasumigaseki, Chiyoda-ku, Tokyo 100-8919 Japan
    Date of Publication: 7th Apr. 2006
    Dates of Updates:  Last Friday of every month
    Copyright: Japan Coast Guard;
               2006.  All right reserved.

Contact point for further information on Japanese ENC and MSS ENC:
Japan Hydrographic Association (JHA)

6F, Dai-Ichi Sogo Bldg.
1-6-6, Haneda-Kuko, Ota-ku
Tokyo 144-0041
Japan

Phone:+81-(0)3-5708-7091
Fax:+81-(0)3-5708-7094

e-mail:enc-support@jha.jp
URL:http://www.jha.or.jp/en/jha/

Business Hours
    9:30-17:00 (Mon.-Fri.)
    *Closed on Saturday, Sunday, public holidays and New Year holidays.


MS (MALACCA AND SINGAPORE STRAITS)

Malacca and Singapore Straits ENC:
    Published by Hydro-oceanographic Service, INDONESIA;
                 National Hydrographic Centre, MALAYSIA;
                 Maritime and Port Authority, SINGAPORE;
    Date of Publication: 26th December 2005
    Dates of Updates: 1st day of every month
    Copyright: Hydro-oceanographic Service, INDONESIA;
               National Hydrographic Centre, MALAYSIA;
               Maritime and Port Authority, SINGAPORE;
               2006.  All right reserved.

Contact point for further information on Japanese ENC and MSS ENC:
Japan Hydrographic Association (JHA)

6F, Dai-Ichi Sogo Bldg.
1-6-6, Haneda-Kuko, Ota-ku
Tokyo 144-0041
Japan

Phone:+81-(0)3-5708-7091
Fax:+81-(0)3-5708-7094

e-mail:enc-support@jha.jp
URL:http://www.jha.or.jp/en/jha/

Business Hours
    9:30-17:00 (Mon.-Fri.)
    *Closed on Saturday, Sunday, public holidays and New Year holidays.



NZ (New Zealand) - Updated 19/07/21
----------------

NZ (NEW ZEALAND) ENCs

Published by the New Zealand Hydrographic Authority
Toitu Te Whenua Land Information New Zealand (LINZ)
155 The Terrace
PO Box 5501
Wellington 6145
New Zealand

Tel: +64 4 460 0110
General enquiry Tel: 0800 665 463
Fax +64 4 460 0161
Email customersupport@linz.govt.nz
www.linz.govt.nz

DATA APPEARANCE
QUALITY OF DATA. The M_QUAL object with a CATZOC attribute is included in New Zealand ENCs as an overlay. This may affect the appearance of the New Zealand ENCs as the ZOC polygons may overlap the LNDARE.
MINIMUM SCALE. The SCAMIN step values for object and attribute combinations have been applied to New Zealand ENCs following international standards.

UPDATES
Updates for New Zealand ENCs are issued in line with the fortnightly electronic New Zealand Notices to Mariners booklet. New Zealand ENC updates are issued for all Permanent, Temporary and Preliminary Notices to Mariners. New Zealand Notices to Mariners can be downloaded from the LINZ website at www.linz.govt.nz or subscribe online at the LINZ website to receive fortnightly Notices to Mariners via email. 

IMPORTANT NOTICE
The information contained in this publication has been either produced by, or supplied to, LINZ and was current as at the date of compilation. Significant hydrographic information is updated by a fortnightly Notices to Mariners service to which all mariners are encouraged to subscribe. All reasonable efforts have been made to ensure accuracy and completeness of the contents of New Zealand ENCs. LINZ regards third parties from which it receives information as reliable, however LINZ cannot verify all such information and errors may therefore exist.

DISCLAIMER
LINZ accepts no liability for any direct, indirect, consequential or incidental damages that result from any errors in the New Zealand ENCs whether due to LINZ or a third party, or that arise from the use, or misuse, of the information contained in New Zealand ENCs.

COPYRIGHT
New Zealand ENCs are owned by LINZ and protected under the NZ Copyright Act 1994 and international convention. All rights reserved. Apart from the uses permitted to the licensee under the user licence agreement, the information may not be copied, reproduced, translated or reduced to any electronic medium or machine readable form, in whole or part, without the prior written consent of LINZ.

UA (Ukraine) (Updated 15/03/2022)

End-users to exercise caution using Ukrainian ENCs. Due to the Russian attack on Ukraine, updates to the ENCs will be infrequent.

US (United States of America)

The NOAA electronic navigational chart (NOAA ENC®) files that may be downloaded from the National Oceanic and Atmospheric Administration (NOAA) are official products. Official ENCs are suitable for navigation under the following regulations and policies, and in the following circumstances:

1. On May 2, 2001, the United States Coast Guard amended the chart carriage regulations to permit government vessels to use electronic charting and navigation systems in lieu of paper charts.

2. On August 15, 2002, the United States Coast Guard issued a statement of policy to bring its regulations into agreement with SOLAS Chapter V (as amended by the changes taking effect July 1, 2002). The policy statement said that, if a ship has an approved ECDIS installed according to SOLAS, Chapter V, the ECDIS will be considered as meeting the ship's nautical chart carriage regulations. The ships that are affected are:

a. U.S.-flagged ships of 150 or more gross tons that engage on international voyages.

b. U.S.-flagged ships certificated solely for service on the Great Lakes and the St. Lawrence River.

c. Foreign-flag ships to which SOLAS, Chapter V, applies that are operating on the navigable waters of the United States. 

This policy is not applicable to U.S.-flag ships engaged only on domestic voyages. These ships must continue to comply with existing navigation equipment requirements until the chart carriage regulations are formally amended.

The NOAA ENC® files available from this site are updated for Notices to Mariners on at least a monthly basis. Users are encouraged to check the site frequently and download the latest versions of the files. Updates are currently available as incremental updates (also called ENC Revision or "ER" files).

Copying, reproduction of the NOAA ENC®s to any other server or location for further reproduction or redistribution is discouraged unless the following guidelines are followed: 1) the NOAA ENC®s and supplementary files including the CATALOG.031 and README.TXT are included in their entirety, 2) this disclaimer is displayed to and accepted by anyone who accesses the NOAA ENC®s, and 3) a reference to this Web site is included so that anyone accessing the NOAA ENC®s is advised of where they originated. 

If these NOAA ENC®s are incorporated into any other product in a form other than as provided by NOAA, the producer of that product assumes full liability and must adhere to conditions 2 and 3 described in the paragraph above concerning copying or reproduction.

For list of available US ENCs, see PRODUCTS.TXT file.


UY (Uruguay) - Updated 09/01/12

Companies, Port Works Companies, and any other person connected with maritime activities, report any alteration or irregularity that may affect the safety of navigation by:

Oceanographic, Hydrographic and Meteorological Office of the Navy.
Address: 980 Capurro St.- Montevideo - URUGUAY - PO Box: 1381 - Postal Code: 11700
Telephones: (+598) 2307 1777 / 2309 3775 / 2309 3861 - Tel./Fax: (+598) 2309 9220
            (+598) 99679071 Real Time Tide in Montevideo Bay

Email: sohma@armada.mil.uy or to the nearest Maritime Authority.
NOTE: See website of SOHMA thorugh the website of the Uruguayan Navy: www.armada.mil.uy/sohma/web/index.html

"SAIL WITH SAFETY"
Get your charts and nautical publications AT OUR OFFICE OR OUR AUTHORIZED SALES AGENTS.
The Oceanographic, Hydrographic and Meteorological Office of the Navy of the Eastern Republic of Uruguay, keeps its cartography permanently updated, so it recommends its use in domestic and foreign vessels when navigating in Uruguayan waters.
The SOHMA is not responsible for Nautical Charts and Publications that have not been acquired at its local sales, or through their authorized agents or the Maritime Authority of the area.


Se solicita a los Navegantes, Prácticos, Organismos del Estado, Entes Autónomos, Compañías Navieras, Empresas de Obras Portuarias y toda otra persona relacionada con el ámbito marítimo, comuniquen cualquier alteración o irregularidad que pueda afectar la seguridad de la navegación al: 

Servicio de Oceanografía, Hidrografía y Meteorología de la Armada.
Dirección: Capurro 980 - Montevideo - URUGUAY - Casilla de Correos: 1381 - Código Postal: 11700
Teléfonos: (+598) 2307 1777 / 2309 3775 / 2309 3861 - Tel./Fax: (598) 2309 9220
           (+598) 99679071 Marea en tiempo real BAHIA DE MONTEVIDEO

E-mail: sohma@armada.mil.uy ó a la Autoridad Marítima más próxima.
NOTA: Consulte el sitio web del SOHMA ingresando desde el sitio de la Armada Nacional: www.armada.mil.uy/sohma/web/index.html


"NAVEGUEMOS SEGUROS"
ADQUIERA SUS CARTAS Y PUBLICACIONES NÁUTICAS EN NUESTRA OFICINA CENTRAL O EN NUESTROS AGENTES DE VENTAS AUTORIZADOS.
El Servicio de Oceanografía, Hidrografía y Meteorología de la Armada de la República Oriental del Uruguay, mantiene su cartografía permanentemente actualizada, por lo que recomienda su empleo en Buques Nacionales y Extranjeros cuando naveguen aguas uruguayas.
El SOHMA no se responsabiliza por Cartas Náuticas y Publicaciones que no hayan sido adquiridas en su local de ventas, o a través de sus Agentes autorizados o de la Autoridad Marítima de la zona.


T & P notices:

Overview of the current status of production of temporary (T) and preliminary (P) notices for each nation can be found here: http://www.primar.org/



SECTION 3 - WITHDRAWN CELLS - Updated 18/07/2025

VE (Venezuela) / MX (Mexico) Updated 18/07/2025

Due to the lack of an updating service and significant differences in content compared with the equivalent paper charts, the following Mexican and Venezuelan cells (as listed below) have been temporarily withdrawn from sale.  A number of Mexican and Venezuelan cells are now being maintained, and so have been re-introduced, and the remaining cells listed below are expected to be re-introduced shortly.  You are therefore advised to remove any installed copies of these ENCs from your display system, and to use suitable paper charts when navigating in the area covered by these ENCs until further notice.  IC-ENC accepts no liability for loss or damage caused by the use of these withdrawn ENCs:

MX200900
MX308212


EA (East Asia) Updated 08/01/19

Subscribers to PRIMAR ENC service will receive updates (ER files) for the SCS ENCs through the regular ENC update service.

The below EA ENC cells are withdrawn:

EA200001
EA200002
EA200003


SECTION 4 - MISCELLANEOUS INFORMATION

ENC overlap in data coverage (Updated  11/02/2026):

Some ENCs contain overlapping data coverage which may make them difficult to use in certain ECDIS systems which default to displaying both overlapping cells.  Caution should therefore be exercised when using such overlapping data. Discussions are in hand between the relevant hydrographic offices in order to resolve this overlapping data problem.  In the meantime, there are some areas between the following countries that may contain overlapping data coverage:

GR (Greece) / TR (Türkiye)

IT (Italy) / TR (Türkiye) 

IT (Italy) / GB (Great Britain)

IT (Italy) / GR (Greece)

JP (Japan) / GB (Great Britain)

RU (Russia) /  US (USA)

CA (Canada) / US (USA)

KR (Korea) / JP (Japan)

RU (Russia) / JP (Japan)

KR (Korea) / RU (Russia)

US (USA) / JP  (Japan)

HR (Croatia) / IT (Italy)

HR (Croatia) / GR (Greece)

UA (Ukraine) / TR (Türkiye)

UA (Ukraine) / RU (Russia)

IN (India) / GB (Great Britain)

IN (India) / JP (Japan)

IN (India) / KR (Korea)

DK (Denmark) / GB (Great Britain) 

GE (Georgia) / RU (Russia)

GE (Georgia) / TR(Türkiye)

ID (Indonesia) / AU (Australia)

ID (Indonesia) / ID (Indonesia) 

ID (Indonesia) / MS (Malacca and Singapore Straits)

ID (Indonesia) / MY (Malaysia)

ID (Indonesia) / SG (Singapore)

ID (Indonesia) / GB (Great Britain)

ID (Indonesia) / JP (Japan)

ID (Indonesia) / KR (Korea)

AU (Australia) / RU (Russia)

IR (Iran) / GB (Great Britain)

MY (Malaysia) / MY (Malaysia)

PK (Pakistan) / IN (India)

RU (Russia) / TR (Türkiye)

RO (Romania)/ UA (Ukraine)

GB (Great Britain) / ID (Indonesia)

RU (Russia) / RU (Russia)

UA (Ukraine) /  UA (Ukraine)

IT (Italy) / UA (Ukraine)

CN (PRD) / CN (SCC)

CN (SCC) / CN (SCC)

CN (SCC) / JP (Japan)

CN (SCC) / KR (Korea)

HR (Croatia) / ME Montenegro

VN (Vietnam) / VN (Vietnam)

VN (Vietnam) / CN (SCC)

VN (Vietnam) / GB (Great Britain)

AL (Albania) / GR (Greece)

AL (Albania) / ME (Montenegro) 

GB (Great Britain) / RU (Russia)

IR (Iran) / OM (Oman)