MACHC 2014

WENDWG 44rd Meeting held March 18-19, 2014Highlights

Review of WEND principles and governanceENC Issues (Gaps and Overlaps)WEND Database

Review of WEND Principles and Governance• Establishing a minimum set of RENC standards

Will enable the possibility of the establishment of additional RENCs

• Developed a procedure for resolving overlapping ENC data Submitted to IRCC5 IRCC5 Decision:

RENCs to first use the procedure on overlaps as an IRCC procedure until more input is received and then possibly propose this to be an IHO

resolution.

Draft Procedure for Resolving Overlaps1. Criteria for Assessing the Risks

a) Geographical location of the overlap (port approaches worse than deep water) and shipping density in that area (many ships worse than few).

b) Size of the area of overlapping data (large is worse than small).c) Scale of the overlapping cells (large scale probably worse than small scale but

the quality of the different scales is also a factor as some ECDIS display the larger scale automatically where overlaps occur).

d) Shipping route patterns - the direction that ships usually transit through the area covered by the overlapping data (where there is a large north to south overlap it would potentially present a greater risk where ships are normally heading north or south than where they are normally heading east or west).

e) Differences in the overlapping data relating to positions of the same feature and also the existence or non-existence of features (many worse than few).

Draft Procedure for Resolving Overlaps

2. Initial Procedures for Addressing the Risks at the ENC Producer levela)ENC Producer MS which have overlaps within their own coverage should, as soon as possible, crop the cells to eliminate the overlap.b)Where possible, ENC Producer MS which have overlaps with another ENC Producer MS’ coverage should take the initiative in discussing arrangements with the other ENC Producer MS for cropping either or both cells to eliminate the overlap. Agreeing an exchange of data may be helpful to facilitate such cropping.c)Where eliminating overlaps is not possible, ENC Producer MS should nonetheless examine the data within the areas of overlap with a view to ensuring, wherever possible, that the data is the same. In prioritizing this work, account should be taken of the criteria in paragraph 1 above. Agreeing an exchange of data may be helpful to facilitate the comparison.d)When it is not possible to eliminate overlaps the ENC Producer MS should align their updating regimes within the overlap areas.

Draft Procedure for Resolving Overlaps

3. Following Procedures at the RHC levelThe assessment of what may be navigationally significant should be guided by the best practices

The RHC may seek the assistance of a Regional ENC Coordination Centre (RENC) to assist in the implementation of this risk assessment and should take a proactive approach with the ENC Producer MS, to resolve overlap issues within the region.

ENC Issues (Gaps and Overlaps)• ENC Gaps for the

MACHC• Reported in

March 2014

PORT COUNTRY RANK 2006Castaway Cay Bahamas 1498Palua Venezuela 967El Tablazo Venezuela 1942Maracaibo Venezuela 705San Marcos Mexico 1230Half Moon Cay Bahamas 1461Puerto Ordaz Venezuela 618Pascagoula light. area United States of America 1888Donaldsonville United States of America 1555Puerto Costa Maya Mexico 1157Charco Azul Panama 905Coco Cay Bahamas 1177Matanzas Venezuela 1079El Palito Venezuela 540Cayo Moa Cuba 1761Cienfuegos Cuba 1310Turbo Colombia 520Panama Canal Panama 11Great Stirrup Cay Bahamas 1898Caripito Venezuela 1624Cabo Rojo Dominican Republic 1363Puerto Carenero Venezuela 1890Puerto Cabello Venezuela 219Puerto Miranda Venezuela 468Galveston light. are United States of America 335Puerto Castilla Honduras 1996

ENC Issues (Gaps and Overlaps)ENC Overlaps for the MACHC reported

March 2014

All Overlaps have since been resolved

CELLNAME CELLNAME_1US4LA15M US4LA13MUS5TX32M US5TX26MUS3GC01M MX300711US1GC09M GB1A20M2

WEND Database• WEND database

• consists of data from IC-ENC, Primar and future RENCs

• IHB is also developing a ENC coverage catalogue• Need to identify the type of metadata that will

populate the catalogue

Next Meeting: Singapore, March 3-5

Thank You!