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IHO File No. S3/3055 CIRCULAR LETTER 54/2019
14 November 2019
IHO SUBMISSION TO IMO SUB-COMMITTEE ON NAVIGATION, COMMUNICATONS
AND SEARCH AND RESCUE (NCSR 7)
Reference:
A. 3rd meeting of the IHO Council – Summary Report, 23 October 2019;
Dear Hydrographer,
1. As introduced at the 3rd meeting of the IHO Council, Reference A, the proposed S-100
Implementation Strategy and associated Roadmap for the S-100 Implementation Decade were
endorsed by the Council. The Council further tasked the Secretary-General to start engaging
with the International Maritime Organization (IMO).
2. To this end the IHO Secretariat has made a submission (Annex A), for discussion at
the 7th Session of the IMO Sub-Committee on Navigation, Communications and Search and
Rescue (NCSR 7), which will take place at the IMO Headquarters, London, United Kingdom
from 15 to 24 January 2020. The document reports on the status of IHO´s ECDIS-related
standards, presents a roadmap for the introduction of the next generation of S-101 Electronic
Navigational Charts (ENC) and explains the resulting implications for existing and new ECDIS
installations.
3. Member States are invited to engage with their respective national delegations to
NCSR 7 and to brief them on the contents of the IHO document. In particular Hydrographic
Offices are urged to obtain the support of their Maritime Administrations for the actions
requested of the Sub-Committee, most notably action 23.3 and 23.4, which are necessary to
meet the proposed 2024 operational availability date for substantial S-101 ENC coverage. In
this respect, Maritime Administrations are also encouraged to submit supporting comment
papers to the NCSR 7 before the 26 November 2019 deadline.
Yours sincerely,
a q 14-7'w>
Dr Mathias JONAS
Secretary-General
Annex A: IHO Submission to NCSR 7
Hydrographic
iho.int information driving
marine knowledge
IHO File No. S3/3055 Annex A to IHO CL 54/2019
E
SUB-COMMITTEE ON NAVIGATION, NCSR7/22/x
COMMUNICATIONS AND SEARCH AND 12 November 2019
RESCUE Original: ENGLISH
7th session Pre-session public release: ☒
Agenda item 22
ANY OTHER BUSINESS
Report on monitoring of ECDIS issues by the IHO
Submitted by the International Hydrographic Organization (IHO)
SUMMARY
Executive summary: This document reports on the status of IHO´s ECDIS-related
standards, presents a roadmap of the introduction of the next
generation of S-101 Electronic Navigational Charts (ENC) and
explains the resulting implications for existing and new ECDIS
installations.
It is part of the continuing monitoring by the IHO of ECDIS issues
related to the implementation of the carriage requirements in SOLAS
Regulations V/19.2.10 and V/19.2.11.
Strategic direction,
if applicable:
Output:
Action to be taken: Paragraph 23
Related documents: A.817(19), MSC.232(82), MSC.1/Circ.1503/Rev.1,
MSC.1/Circ.1593, MSC.1/Circ.1595
Background
1. In accordance with the directive agreed by the 18th International Hydrographic
Conference (23-27 April 2012), the International Hydrographic Organization (IHO) continues
to monitor the implementation of relevant IHO standards in ECDIS to ensure that issues
identified with regard to the operation of ECDIS are collated, analyzed, communicated and
resolved as speedily as possible.
Introduction
2. The use of ECDIS with official Electronic Navigational Chart (ENC) data sets
contributes to the enhancement of the safety of navigation. In conjunction with the mandatory
carriage requirements for ECDIS, all the IHO Member States have undertaken the necessary
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measures to meet their obligations to provide official ENC in the mandated data transfer
standard, namely IHO S-57.
3. For the purpose of the cartographic functionality of ECDIS and the proper provision of
data services, the IHO maintains a suite of ECDIS-related standards, as referenced in
appendix 1 of the IMO ECDIS Performance Standards (MSC.232(82)).
4. IHO´s most relevant ECDIS-related standard is the transfer standard for digital
hydrographic content S-57. This standard has been used for official ENCs since November
2000 and has not been technically updated since then. This period of consolidation has
facilitated a stable technical environment for data production and dissemination services to
reliably feed ECDIS installations delivered by a variety of Original Equipment Manufacturers
(OEM) in compliance with the applicable IMO regulations on ECDIS.
5. The S-57 transfer standard is based on the technological paradigms for data services
of the 1990s. In this regard it has become an isolated proprietary solution which does not align
to contemporary concepts of data provision. The management of S-57 ENCs is therefore
comparably costly and options to combine S-57 ENCs with other information relevant for
navigation are therefore limited.
6. In support of digitization on board, the exchange of nautical information and the
provision of maritime services in the context of e-navigation, the IHO’s S-100 Universal
Hydrographic Data Model was adopted by the IMO in 2011 as the basis for technical
harmonization of data services providing navigation related information exchange. S-100 is a
contemporary, more versatile standard – it incorporates the requirements of S-57 and is
aligned with the ISO 19100 series of geographic information standards.
7. S-100 is the basis upon which a wider range of digital products and transfer standards
for hydrographic and maritime services related applications are based. The e-navigation
Strategy Implementation Plan (SIP) (MSC.1/Circ.1595, as updated) requires that Maritime
Services be S-100 conformant as a baseline. S-100 supports items such as imagery and
gridded data, 3D and time-varying data and new applications that go beyond the scope of
traditional hydrography; for example, high-density bathymetry, oceanographic features (tides
and currents), sea floor classification and marine GIS. It will also enable the use of web-based
services for acquiring, processing, analyzing, accessing and presenting data.
8. The IHO S-100 framework standard specifies methods for data modelling and for
developing product specifications. Several test bed projects have been conducted or are about
to be conducted to test the use and interoperability of datasets produced according to S-100
based product specifications in a single end user’s device.
9. The S-100 framework has matured to an extent that the regular production and
dissemination of official ENCs in a new transfer standard, named IHO S-101, can now be
envisioned. This new transfer standard is not substantially different from IHO S-57 in terms of
cartographic content and maintains the same level in support for safe navigation, but it offers
additional, substantial advantages:
The operational elements of ECDIS software to process cartographic content can
be more easily maintained since the display instructions are embedded in the
dataset as part of the S-101 ENC delivery.
S-101 ENCs enjoy a modernized method of encryption to improve robustness
against cyber threats;
The implementation of the capability to read and process S-101 ENCs, including
the new encryption mechanism, offers the technical basis for future implementation
of e-navigation services relevant to ECDIS as a crucial element of Integrated
Navigation Systems (INS).
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10. The enhancement of ECDIS functionality to include S-101 ENCs is a logical and
necessary step towards the implementation of the e-navigation concept of harmonized
Maritime Services.
Status of IHO ECDIS-related Standards
11. In accordance with IMO Circular MSC.1/Circ.1503/Rev.1 – ECDIS - Guidance for good
practice – the up-to-date list of all the relevant IHO standards and publications relating to
ECDIS can be accessed from the IHO website (see www.iho.int > ENCs&ECDIS > Current
ENC and ECDIS Standards). The ECDIS-related information on the IHO website was updated
on 25 April 2019 to reflect the withdrawal of several IHO standards, in particular Edition 3.4 of
S-52, Annex A - IHO Presentation Library for ECDIS. The ENC/ECDIS Data Presentation and
Performance Check and associated datasets were also removed from the IHO website as they
are no longer relevant to the new editions identified in Table 1.
Table 1
Status of IHO ECDIS-related standards
Designation Normative reference for the type approval of ECDIS
systems referring to the 4th edition of IEC 61174 (2015)
S-57 - Transfer Standard for Edition 3.1 (November 2000), in conjunction with:
Digital Hydrographic Data - Supplement 3 (June 2014)
- S-57 Maintenance Document No. 8 (March 2002)
S-52 - Chart Content and Display Edition 6.1(.1) (October 2014 - with clarifications up to
Aspects of ECDIS June 2015)
S-52, Annex A - IHO Edition 4.0(.2) (October 2014 - with clarifications up to
Presentation Library for ECDIS July 2017)
S-64 - IHO Test Data Sets for Edition 3.0.2 (July 2017)
ECDIS
S-61 - Product Specification for Edition 1.0 (January 1999)
Raster Navigational Chart
S-63 - IHO Data Protection Edition 1.2.0 (January 2015)
scheme
12. As a result of the withdrawal of Edition 3.4 of S-52, Annex A and updates to S-64 – IHO
Test Data Sets for ECDIS – some text of MSC.1/Circ.1503/Rev.1 that relate specifically to
these publication editions are now out of date and it is considered that the circular no longer
provides the guidance to the maritime community for which it was designed. MSC100 agreed
to include in its post-biennial agenda an output on “Revision of ECDIS-Guidance of Good
Practice (MSC.1/1503/Rev.1)”, assigning NCSR Sub-Committee as the coordinating organ
(MSC100/20 paragraph 17.9).
Definition and testing of S-100 compliant product specifications
13. The production of S-100 based datasets to carry specific information such as detailed
bathymetry and charting features has been ongoing for some time for test purposes.
Systematic tests to improve data interoperability are currently being undertaken for the
following S-100 based datasets:
- S-101 ENC Electronic Navigational Chart (ENC) (Edition 1.0.0 published in
December 2018 for testing);
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- S-102 Bathymetric Surface (edition 2.0.0 published in 2019);
- S-111 Surface Currents (edition 1.0.0 published in December 2018);
- S-122 Marine Protected Areas (edition 1.0.0 published in January 2019 for
testing);
- S-123 Marine Radio Services (edition 1.0.0 published in January 2019 for
testing);
- S-129 Under keel Clearance Management Systems (edition 1.0.0 published
for testing in 2019).
14. The IHO Geospatial Information Registry, which is a basic operative element of the S-
100 Standard framework, has been operational for a number of years and currently holds
several thousand items that have been registered by participating organizations, each of
whom maintain their own domains in the Registry. These items have been used to model
real world features included in product specifications. As such, the International Association
of Aids to Navigation and Lighthouse Authorities (IALA) has endorsed the following product
specifications:
- S-211 Edition 1.1.0 – Port Call Messages;
The World Meteorological Organization (WMO) has developed:
- S-411 Edition 1.1.0 – Ice Information;
- S-412 Edition 1.0.0 – Weather Overlay.
Proposed roadmap for the introduction of IHO S-101 ENCs as transfer standard for
official charts in ECDIS
15. The IHO has developed and released the IHO S-101 Electronic Navigational Chart
product specifications (now at edition 1.0.0) with the stated intent that S-101 ENCs will
eventually replace S-57 ENCs. Due to the flexible nature of how S-101 is designed, portrayal
and data protection/integrity is also included as part of the product specification and thus in a
future S-101 compatible ECDIS the explicit need for IHO S-52 (cartographic presentation rules)
and S-63 (encryption of data sets) conformant implementation is eliminated.
16. The IHO S-101 ENC product specification will be technically ready and exhaustively
tested for regular production of S-101 ENCs by the end of 2022. It is expected that from 2023
S-101 ENCs will be produced through export from commercially-developed upgraded
database-driven ENC production systems in parallel to S-57 ENCs and through conversion of
S-57 ENCs into S-101 ENCs. S-101 ENCs created by conversion will meet all conditions
necessary to support safe navigation as S-57 ENCs.
17. The IHO Council at its third session in October 2019 endorsed the concept of an
implementation decade (2020 - 2030) which includes regular production and distribution
services for S-100 based products commencing with the achievement of regular service
provision of substantive geographic coverage of S-101 ENC in 2024. This timeline is set to
achieve synchronization of the implementation of S-101 ENC compatibility with the application
of MSC.1/Circ.1593 - Interim Guidelines for the Harmonized Display of Navigation Information
Received via Communications Equipment - coming into force on 1 January 2024 for new
ECDIS equipment by OEMs.
18. The IHO has collaborated closely with industry in the development of data production
and encryption software ready to support safe and continuous production and dissemination
of S-101 ENCs. IHO Member States have started work on a harmonized approach to enable
ENC producing Hydrographic Offices to provide S-101 ENCs for their respective areas of
responsibility in 2024, in parallel to the established production of S-57 ENCs. S-101 ENC
A-4
distribution will happen via the established dissemination network in partnership with
commercial chart suppliers.
19. In order to make S-101 ENC compatibility legally binding for new ECDIS after 1 January
2024, Appendix 1 of the ECDIS Performance Standards (MSC.232(82)) will require to be
amended to include reference to the IHO standards S-98, S-100, S-101. S-98 establishes the
basic rules on how a subset of S-100 based product specifications should interact with each
other. It provides an interoperability catalogue that specifies the minimum set of predefined
combinations of multiple S-100 based data that are loaded and displayed on navigation
systems at any one time. This will enable the mariner to have a clear navigation picture with
the different types of data that are available in parallel at any given time without obscuring the
underlying chart information.
20. In order to maintain ECDIS devices already installed on SOLAS vessels which are
technically not ready nor required to be upgraded to S-101 ENC compatibility, and to comply
with the applicable IMO regulations pertaining to existing navigation equipment, identical
coverage will be provided for S-57 ENCs and S-101 ENCs for a transition period until there is
no significant number of legacy systems in the field and all ECDIS in operation have become
S-101 compatible. This situation is expected near the end of the decade, but will be
continuously monitored to enable a decision to be made by the responsible IMO body.
21. As a consequence, new ECDIS systems to be brought into the market at the time when
S-101 ENC coverage starts (2024) will have to be capable to process both transfer standard
formats: S-57 ENCs and S-101 ENCs.
22. Safety of navigation will be maintained by cartographic content of both S-57 and S-101
standards. From the user’s perspective, presentation of cartographic and functional features
to meet the IMO mandated content in a mixed environment of S-57 ENCs and S-101 ENCs in
one ECDIS device will be seamless and presented under the identical presentation regime for
charted features and navigational objects.
Action requested of the Sub-Committee
23. The Sub-Committee is requested to:
.1 note the maintained status of IHO´s ECDIS-related standards;
.2 acknowledge the ongoing effort to develop and test S-100 based data product
specifications;
.3 acknowledge the proposed introduction of IHO S-101 ENCs as a transfer
standard for official charts in ECDIS;
.4 consider a work item to amend Appendix 1 of MSC.232(82) to include reference
to S-98, S-100 and S-101; and
.5 take any other action it considers appropriate.
A-5
Saatja: CL-LC <
[email protected]>
Saadetud: 14.11.2019 17:19
Adressaat: INFO <
[email protected]>
Teema: CL 54/2019
Manused: ipnchjoennehhhig.png; CL54_2019_EN_v1.pdf
Dear Hydrographer,
Please find attached herewith :
- CL 54/2019: IHO SUBMISSION TO IMO SUB-COMMITTEE ON NAVIGATION,
COMMUNICATONS AND SEARCH AND RESCUE (NCSR 7).
Kind regards