1. IHO S-100 Much more than ENCs
Barrie Greenslade
Chair IHO TSMAD,
United Kingdom Hydrographic Office
February, 2007

2. Reference
The material for this presentation was extracted from a paper entitled “Development of IHO S-100 IHO Geospatial Standard for Hydrographic Data” by L. Alexander, M. Brown, B. Greenslade and A. Pharaoh

3. History IHO S-57 formally adopted May 1992
Edition 3.0 was released November 1996
ENC Product Specification 1.0
Minor Revision 3.1 released November 2000
ENC Product Specification 2.0
Supplement released January 2007 to cater for new IMO requirements
ENC is the main product specification supported
Two derivatives – AML and Inland ECDIS

4. S-57 Limitations
Developed to meet ENC requirement for an IMO compliant ECDIS (the IMO specifications were in their infancy and not completely defined)
Inflexible maintenance regime (requiring the freezing of standards)
Cannot support future requirements (gridded bathymetry, time-varying info)
Data transfer mechanisms limited (data model embedded in encapsulation)

5. New Name  S-100
Many regard the S-57 standard and the ENC Product Specification as the same thing
Impression in the ENC community that the work undertaken to support other hydrographic products would radically change the ENC, thus affecting ENC production and ECDIS adoption
As this was not the goal of the revision work S-57 Edition 4.0 under development is henceforth designated as S-100, IHO Geospatial Standard for Hydrographic Data
Any product specifications developed using S-100 would follow in an S-10x series as they are produced (e.g S-101 Next Generation ENC Product Specification)

6. S-100
Next Gen ENC
S-101
AML
Nautical
Pubs
Gridded
MIO
Inland ENC
Bathy ENC
3D & Temporal
ICE
S-100 will support a greater variety of data sources, products and services

7. Support Greater Variety
Includes:
Imagery and gridded data
3-D and time-varying data (x,y,z and time)
MIOs, Other
In support of:
Dynamic ECDIS
High-density bathymetry
Seafloor classification
Marine GIS
Web-based services

8. Additional Objectives
No permanent tie to single exchange mechanism (take advantage of contemporary technologies  web
Evolve core standard through extensions without continued need for producing new versions of product specifications or system revisions (and … re-generating, re-distributing, re-loading … the data in the new version)
Product Feature Catalogs that are more flexible and capable of expansion (e.g. new IMO regulation)
New features in support of richer ECDIS experience (e.g. Nautical Publications, Inland ENC Product Specs, …)

9. Strong Foundation Built on strong international standards:
ISO /TC211 with 130 countries/members
In liaison with DGIWG (military), OGC (strong industry/web involvement presence) and GDSI (Global Spatial Data Infrastructure)
Harmonized data content between S-100 and NATO DIGEST
IHO will host Registry  facility to store/access various registers of hydrographic-related information ( such as feature concept dictionaries, data types, metadata)

10. IHO Registry for S-100 will be comprised of a collection of registers:
Feature Registers
Hydro
Ice
NPub
Inland ECDIS
OEF
Hydro
Ice
NPub
Inland
OEF
Register
Register
Register
Register
Register
FDD
FDD
FDD
FDD
FDD F A E F A E F A E F A E F A E
Other Register
Metadata Register
Data Type Register
Symbols Register
Feature Registers
FDD
Features
Attributes
Enumerates
IHO Registry
Register
Feature
Data
Dictionary
Features
Attributes
Enumerates

11. Registry/Register
Initially there will be registers for Hydrographic Info (existing features, dynamic ice coverage, nautical publications, Inland ENCs, Open ECDIS)
With this flexibility other features (even in oher registries) can be specified in a P.S.
Even if new item is registered, a new version of current P.S. not required
Operational Registry available (www. ukhoftp.gov.uk/iho_registry)

12. S-100 Benefits
Using defined standards ensures S-100 stays in mainstream of geospatial info industry  greater use and lower cost of implementation/use
Conformance to defined standards maximizes COTS software applications and development
New components not being developed in isolation
Interoperability with other ISO/TC211 based profiles (e.g. NATO DIGEST, ICE, weather, …)
Greater usage of data (beyond HOs and ECDIS users) hence greater HO leverage/support for extended coverage and operations
Enhanced usage (coastal zone mapping, security,…)
“Plug and Play” updating of data, symbology and software enhancements.
Inclusion of 10 years worth of corrections and extensions (deferred)

14. No.
Core Component Description
Working Draft
Committee Draft
Final Draft
Component ready 1
Imagery and Gridded X 2
Metadata – Discovery P1 3
Metadata – P2 4
Framework (includes Application Schema) 5
1D&2D Spatial 6 3D 7
Hydrographic Survey Content Specification 8
Feature Data Dictionary 9
CRS
Encoding

15. Timeline for S100/S101 December 2007 – S100 Published
2007 – Commence development of S-101
Begin User Outreach with OEM’s, Production software, Mariners
1st Quarter 2007 – Begin Requirements for ENC Product Specification
4th Quarter 2007 Initial Requirements gathering completed
Early 2008 – Publish S102 Tidal Harmonics Product Specification
1st Quarter 2008 – Begin First Draft of S-101
2nd Quarter 2008 – Complete First Draft of S-101
4th Quarter 2008 – Committee Draft of S-101 completed
Impact Analysis
Production Software (HO’s, Software companies)
OEM’s
End Users – Training establishments
Type Approval

16. Timeline Cont. 2007 – 2010 – Coordination Group on ECDIS
Standards Alignment
IMO Performance Specification
IEC 61174
IEC 62288
IHO S-52 - CSMWG
IHO S-63 – DPSWG
4th Quarter 2010 – Final Draft of S-101 approved by TSMAD (DATS)
2011 – Approval of S-101 by CHRIS (HSSC)
2012 – Approval by IHO member states at the Conference
2012 – S101 available for Implementation

17. Target
As a consequence of the extensive development process, any improved ENC Product Specification (S-101) could not come into force before at least 2012 and even then, the standard would sit alongside the existing S-57 Edition 3.1 Product Specification for some time. Furthermore, it is intended that any ECDIS which are upgraded to use S-101 ENCs will continue to be able to use S-57 Edition 3.1 ENCs as well.

18. Migration from S-57 to S-100
S will continue to be used for many years even with S-100 release
Opportunity to use other PS (e.g. gridded) with existing ENC PS as overlay
Will be done with inclusion of all interested parties (hence workshop(s), IHO S-100 Discussion Forum

19. For more information
Barrie Greenslade:

20. QUESTIONS