IHO File No. S3/8151/S-58

CIRCULAR LETTER 60/2026

26 October 2026

ADOPTION OF IHO PUBLICATIONS

S-58 EDITION 9.0.0 - ENC VALIDATION CHECKS

References: a) IHO Resolution 2/2007 - Procedures for making changes to IHO Technical Standards and

Specifications.

b) IHO CL 43/2026 dated 10 August 2026 –Call for approval of S-58 Edition 9.0.0

Dear Hydrographer,

1. In accordance with reference A, the adoption of a new edition of Publication S-58, endorsed by HSSC at its 18th meeting, was proposed through Reference B.

2. The IHO Secretariat thanks the forty-six Member States who responded to Reference B: Algeria, Angola, Argentina, Australia, Belgium, Brazil, Chile, China, Colombia, Denmark, Ecuador, Estonia, Fiji, France, Germany, Greece, India, Indonesia, Iran (Islamic Republic of), Ireland, Italy, Japan, Lebanon, Lithuania, Malaysia, Mauritius, Mexico, Netherlands, New Zealand, Norway, Oman, Peru, Philippines, Poland, Saudi Arabia, Slovenia, Spain, Sri Lanka, Sweden, Thailand, Tunisia, Türkiye, Ukraine, United Kingdom, United States of America and Venezuela.

3. All forty-six Member States supported the adoption of the proposed Edition. Respectively Nine Member States submitted comments in addition to their vote. All comments received are provided in Annex A to this Circular Letter with responses from the relevant Working Group (ENCWG), the HSSC Chair and IHO Secretariat.

4. When the Reference was issued, there were 104 Member States of the IHO with two States suspended. In accordance with the provisions of the Convention on the IHO as amended, the minimum number of affirmative votes required is thirty-five (35). As a result, the abovementioned proposed Edition has been adopted and will be made available (English versions only) on the IHO website > Publications > Standards and Specifications.

5. The IHO Secretariat and the HSSC Chair would like to congratulate the ENCWG Chair Team and thank all those who were involved in the development of this new S-58 Edition.

On behalf of the Secretary-General

Yours sincerely,

John NYBERG

Director

Annex: Responses to Member States’ comments to IHO CL 43/2026 from the ENCWG, the HSSC Chair

and IHO Secretariat (in English only).

Annex to IHO CL 60/2026

MEMBER STATES’ RESPONSES TO IHO CL 43/2026 AND COMMENTS

FROM THE ENCWG CHAIR, the HSSC CHAIR and IHO SECRETARIAT

S-122-Marine Protected Areas, Ed. 2.0.0 PRODUCT SPECIFICATIONS

COLOMBIA (Vote for adoption = YES)

The proposed changes contribute to strengthening quality control for ENCs by establishing clear and

consistent validation criteria and correcting redundancies in the previous version.

Comments by the ENCWG Chair, the HSSC Chair and IHO Secretariat:

The ENCWG Chair, HSSC Chair and IHO Secretariat thank Colombia for their comments.

DENMARK (Vote for adoption = YES)

DENMARK supports the endorsement of the Edition 9.0.0 of Publication S-58, but provides the

following comments:

1. Check 509: Recommend that the entry for RESARE in the 'Check description' entry be

amended to read:-'RESARE: CATREA and RESTRN'

2. Check 1669: Recommend amending the table as follows:-Amend table as follows:-

add a new row with the following values VALSOU 'not present': WATLEV '7': QUASOU 'not

Present' : HEIGHT 'unknown' : TECSOU SOUACC 'not Present'

delete the current row containing the values||VALSOU 'Unknown': WATLEV '7': QUASOU 'not

Present' : HEIGHT 'not present' : TECSOU SOUACC 'not Present'

3. Check 1785: Recommend that the 'Check description' entry be amended to read:-

'For each feature object where CONDTN is Equal to 4 (wingless) AND CATLMK does not contain

the value 18 (windmill) AND does not contain the value 19 (windmotor).

4. Check 1811: Recommend that the 'Check solution' entry be amended to read:-

'Remove incorrect conflicting value of CATBRG and/or recapture fixed and opening sections

as separate BRIDGE feature objects.'

5. Check 1811 Propose amending and renumbering check 502 to 502a and adding new check

502b

502a If the EN file size is greater

than 5 Megabytes.

The EN file is larger

than 5Mb in size.

Ensure that the cell is

not larger than 5Mb.

2.2 E

502b If the ER file size is greater than

50 Kilobytes.

The ER file is larger than

50Kb in size.

Ensure that the cell is not

larger than 50Kb.

Appendix B.1,

Annex A (2.6)

E

6. Github issue #77 The current wording of Check 509 results in error message when either

CATREA or RESTRN are set to ‘unknown’ whereas it should only be triggered if both attributes

are set to unknown

Recommend that the entry for RESARE in the ‘Check description’ entry be amended to read:-

509 For each feature object listed below where

the attribute stated is Unknown:

For each feature object listed below where

the attribute stated is Unknown: ARCSLN:

NATION;

ASLXIS: NATION;

CONZNE: NATION;

COSARE: NATION;

CTNARE: INFORM or TXTDSC;

CUSZNE: NATION;

DEPARE: DRVAL1 and DRVAL2;

DEPCNT: VALDCO;

DRGARE: DRVAL1;

DWRTPT: ORIENT;

DWRTCL straight (rhumb) line: ORIENT;

EXEZNE: NATION;

FSHZNE: NATION;

LNDELV: ELEVAT;

LIGHTS: CATLIT3

M_COVR: CATCOV;

M_CSCL: CSCALE;

M_NSYS: MARSYS or ORIENT;

M_QUAL: CATZOC;

M_SDAT: VERDAT;

M_VDAT: VERDAT;

MAGVAR: VALMAG;

NEWOBJ: CLSDEF and

CLSNAM;

RCTLPT : ORIENT;

RESARE: CATREA only present;

RESARE: RESTRN only present;

RESARE: CATREA and RESTRN

present;

STSLNE: NATION;

SWPARE: DRVAL1;

TESARE: NATION;

TS_PAD: TS_TSP.

Mandatory attribute has not

been populated with a value.

Populate mandatory attributes; in

these cases the object is

meaningless without this value.

3.5.2 and Supplement No.3

Ch.4 (3.5.2.1)

E

7. Amend Check 1669 for consistency as follows:

1669 For each OBSTRN feature object

where the attribute values do not

correspond to the table below.

OBSTRN object with

illogical attribute value

combinations.

Amend attributes in

accordance with the logical

values defined in the table.

6.2.2 W

VALSOU WATLEV QUASOU HEIGHT TECSOU SOUACC

not Present 1 OR 2 not Present Present not Present

7 not Present unknown not Present

Unknown 3, 4, 5 OR Unknown 2 OR not Present not Present not Present

7 not Present not Present not Present

< 0

4 1, 3, 4, 6, 8, 9 OR not

Present

not Present Optional

4 7 not Present not Present

0 5 1, 3, 4, 6, 8, 9 OR not

Present

not Present Optional

> 0

3 1, 3, 4, 6, 8, 9 OR not

Present

not Present Optional

3 7 not Present not Present

8. Check 1785 _ Logic of check has been inadvertently reversed during editing for edition 9.0.0. (reported

by ESRI)

Amend check 1785 as follows:

1785 For each feature object where

CONDTN is Equal to 4 (wingless)

AND CATLMK does not contain

the value 18 (windmill) AND does

not contain the value 19

(windmotor).

Object other than windmill

or windmotor with

CONDTN = 4 (wingless).

Remove value of CONDTN

or use an appropriate

LNDMRK object.

Logical consistency E

9. Add check solution to Check 1811 as follows:

1811 For each BRIDGE feature object

where CATBRG includes the

value 1 (fixed bridge) in

combination with at least one of:-

2 (opening bridge), 3 (swing

bridge), 4 (lifting bridge), 5

(bascule bridge) and 7 (draw

bridge).

CATBRG is populated with fixed and opening bridge values.

Remove incorrect

conflicting value of

CATBRG and/or recapture

fixed and opening sections

as separate BRIDGE

feature objects.

4.8.10 & logical

consistency.

E

10. Amend check 505 as follows:

505 If either M_COVR and M_NSYS

or M_QUAL meta objects do not

exist within the data set.

Mandatory feature objects

are missing.

Include mandatory feature

objects M_COVR and

M_NSYS. and M_QUAL.

3.4 and MD8 8.Co.6. C

11. Remove check 562:

562 Check removed.For each

NEWOBJ feature object where

INFORM does not commence

with the CLSNAM AND contain

the CLSDEF of the feature object.

The text in INFORM does

not commence with the

CLSNAM object or

contain the CLSDEF of

the NEWOBJ feature

object.

Ensure that the text in

INFORM commences with

the CLSNAM followed by

the CLSDEF of the

NEWOBJ feature object.

Supplement No.3

Ch.4 (3.3.1) and

Appendix B1, Annex

A (16)

W

12. Amend check 1750 as follows:

1750 For each LIGHTS feature object

which is a slave to a BOYXXX

feature object OR MORFAC

feature object where CATMOR =

7 (mooring buoy) AND HEIGHT is

Present.

HEIGHT populated for a

LIGHTS object which is

slave to a buoy object.

Remove HEIGHT from

LIGHTS object.

12.8.1 E

Comments by the ENCWG Chair, the HSSC Chair and IHO Secretariat:

The ENCWG Chair, HSSC Chair and IHO Secretariat thank Denmark for their comments. The late

amendments referred to by Denmark in the abovementioned comments 1-12 were reviewed and

approved by the ENCWG11 meeting (04-09 October 2026), with editorial amendments as required,

and resultant changes have been included in the final published Edition 9.0.0 of S-58.

INDONESIA (Vote for adoption = YES)

Indonesia approve the proposed Edition 9.0.0 of S-58. We believe this new edition will further improve

the quality and consistency of S-57 ENC validation, while also supporting the continued development

of S-100 standards.

Comments by the ENCWG Chair, the HSSC Chair and IHO Secretariat:

The ENCWG Chair, HSSC Chair and IHO Secretariat thank Indonesia for their comments.

IRAN (ISLAMIC REPUBLIC OF) (Vote for adoption = YES)

It is suggested that the status of the removal of Check 1693 be explicitly specified in the ""Summary

proposed Changes for S-58 Edition 9.0.0"" document. Currently, this matter is inconsistent with the

original text of the Standard.

Comments by the ENCWG Chair, the HSSC Chair and IHO Secretariat:

The ENCWG Chair, HSSC Chair and IHO Secretariat thank Iran for their comments, noting this omission

from the Summary of changes document.

MALAYSIA (Vote for adoption = YES)

Malaysia supports the adoption of S-58 Edition 9.0.0, particularly its improved validation logic to

ensure consistent implementation by ENC producers and validation software developers.

Comments by the ENCWG Chair, the HSSC Chair and IHO Secretariat:

The ENCWG Chair, HSSC Chair and IHO Secretariat thank Malaysia for their comments.

PERU (Vote for adoption = YES)

The update reorganizes and introduces new critical validation checks, adjusts attributes related to

depth controls (depth contours and bathymetric areas), and removes redundant checks, thereby

improving the consistency of the standard. Changes introduced in this new version of S-58 will be

reflected in updates (version changes) to the validator software used in our quality control processes.

Comments by the ENCWG Chair, the HSSC Chair and IHO Secretariat:

The ENCWG Chair, HSSC Chair and IHO Secretariat thank Peru for their comments.

SPAIN (Vote for adoption = YES)

Although the draft proposal is approved, it is noted that GitHub Issue #76 has not been included (link:

https://github.com/iho-ohi/ENCWG-S58-ENC-Validation-Checks/issues/76), which would address the

correction of S-58 check 1669. (see DK comment No. 3)

Comments by the ENCWG Chair, the HSSC Chair and IHO Secretariat:

The ENCWG Chair, HSSC Chair and IHO Secretariat thank Spain for their comments. The late

amendment referred to by Spain to update Check 1669 in accordance with GitHub Issue #76 was

approved by the ENCWG11 meeting (04-09 October 2026) and the resultant change has been included

in the final published Edition 9.0.0 of S-58.

THAILAND (Vote for adoption = YES)

HDRTN, Thailand reviewed draft Edition 9.0.0 of S-58 and we support the adoption of this Edition.

Comments by the ENCWG Chair, the HSSC Chair and IHO Secretariat:

The ENCWG Chair, HSSC Chair and IHO Secretariat thank Thailand for their comments.

UNITED KINGDOM (Vote for adoption = YES)

As already stated we are happy to approve but would like some historical issues identified in version 8

fixed if the ENC WG S-58 vice chair agrees.

Comments by the ENCWG Chair, the HSSC Chair and IHO Secretariat:

The ENCWG Chair, HSSC Chair and IHO Secretariat thank United Kingdom for their comments. The

issues were reviewed and the changes approved by the ENCWG have been included in the final

published Edition 9.0.0 of S-58.

IHO File No. S3/8151/S-58

CIRCULAR LETTER 60/2026

26 October 2026

ADOPTION OF IHO PUBLICATIONS

S-58 EDITION 9.0.0 - ENC VALIDATION CHECKS

References: a) IHO Resolution 2/2007 - Procedures for making changes to IHO Technical Standards and

Specifications.

b) IHO CL 43/2026 dated 10 August 2026 –Call for approval of S-58 Edition 9.0.0

Dear Hydrographer,

1. In accordance with reference A, the adoption of a new edition of Publication S-58, endorsed by HSSC at its 18th meeting, was proposed through Reference B.

2. The IHO Secretariat thanks the forty-six Member States who responded to Reference B: Algeria, Angola, Argentina, Australia, Belgium, Brazil, Chile, China, Colombia, Denmark, Ecuador, Estonia, Fiji, France, Germany, Greece, India, Indonesia, Iran (Islamic Republic of), Ireland, Italy, Japan, Lebanon, Lithuania, Malaysia, Mauritius, Mexico, Netherlands, New Zealand, Norway, Oman, Peru, Philippines, Poland, Saudi Arabia, Slovenia, Spain, Sri Lanka, Sweden, Thailand, Tunisia, Türkiye, Ukraine, United Kingdom, United States of America and Venezuela.

3. All forty-six Member States supported the adoption of the proposed Edition. Respectively Nine Member States submitted comments in addition to their vote. All comments received are provided in Annex A to this Circular Letter with responses from the relevant Working Group (ENCWG), the HSSC Chair and IHO Secretariat.

4. When the Reference was issued, there were 104 Member States of the IHO with two States suspended. In accordance with the provisions of the Convention on the IHO as amended, the minimum number of affirmative votes required is thirty-five (35). As a result, the abovementioned proposed Edition has been adopted and will be made available (English versions only) on the IHO website > Publications > Standards and Specifications.

5. The IHO Secretariat and the HSSC Chair would like to congratulate the ENCWG Chair Team and thank all those who were involved in the development of this new S-58 Edition.

On behalf of the Secretary-General

Yours sincerely,

John NYBERG

Director

Annex: Responses to Member States’ comments to IHO CL 43/2026 from the ENCWG, the HSSC Chair

and IHO Secretariat (in English only).

Annex to IHO CL 60/2026

MEMBER STATES’ RESPONSES TO IHO CL 43/2026 AND COMMENTS

FROM THE ENCWG CHAIR, the HSSC CHAIR and IHO SECRETARIAT

S-122-Marine Protected Areas, Ed. 2.0.0 PRODUCT SPECIFICATIONS

COLOMBIA (Vote for adoption = YES)

The proposed changes contribute to strengthening quality control for ENCs by establishing clear and

consistent validation criteria and correcting redundancies in the previous version.

Comments by the ENCWG Chair, the HSSC Chair and IHO Secretariat:

The ENCWG Chair, HSSC Chair and IHO Secretariat thank Colombia for their comments.

DENMARK (Vote for adoption = YES)

DENMARK supports the endorsement of the Edition 9.0.0 of Publication S-58, but provides the

following comments:

1. Check 509: Recommend that the entry for RESARE in the 'Check description' entry be

amended to read:-'RESARE: CATREA and RESTRN'

2. Check 1669: Recommend amending the table as follows:-Amend table as follows:-

add a new row with the following values VALSOU 'not present': WATLEV '7': QUASOU 'not

Present' : HEIGHT 'unknown' : TECSOU SOUACC 'not Present'

delete the current row containing the values||VALSOU 'Unknown': WATLEV '7': QUASOU 'not

Present' : HEIGHT 'not present' : TECSOU SOUACC 'not Present'

3. Check 1785: Recommend that the 'Check description' entry be amended to read:-

'For each feature object where CONDTN is Equal to 4 (wingless) AND CATLMK does not contain

the value 18 (windmill) AND does not contain the value 19 (windmotor).

4. Check 1811: Recommend that the 'Check solution' entry be amended to read:-

'Remove incorrect conflicting value of CATBRG and/or recapture fixed and opening sections

as separate BRIDGE feature objects.'

5. Check 1811 Propose amending and renumbering check 502 to 502a and adding new check

502b

502a If the EN file size is greater

than 5 Megabytes.

The EN file is larger

than 5Mb in size.

Ensure that the cell is

not larger than 5Mb.

2.2 E

502b If the ER file size is greater than

50 Kilobytes.

The ER file is larger than

50Kb in size.

Ensure that the cell is not

larger than 50Kb.

Appendix B.1,

Annex A (2.6)

E

6. Github issue #77 The current wording of Check 509 results in error message when either

CATREA or RESTRN are set to ‘unknown’ whereas it should only be triggered if both attributes

are set to unknown

Recommend that the entry for RESARE in the ‘Check description’ entry be amended to read:-

509 For each feature object listed below where

the attribute stated is Unknown:

For each feature object listed below where

the attribute stated is Unknown: ARCSLN:

NATION;

ASLXIS: NATION;

CONZNE: NATION;

COSARE: NATION;

CTNARE: INFORM or TXTDSC;

CUSZNE: NATION;

DEPARE: DRVAL1 and DRVAL2;

DEPCNT: VALDCO;

DRGARE: DRVAL1;

DWRTPT: ORIENT;

DWRTCL straight (rhumb) line: ORIENT;

EXEZNE: NATION;

FSHZNE: NATION;

LNDELV: ELEVAT;

LIGHTS: CATLIT3

M_COVR: CATCOV;

M_CSCL: CSCALE;

M_NSYS: MARSYS or ORIENT;

M_QUAL: CATZOC;

M_SDAT: VERDAT;

M_VDAT: VERDAT;

MAGVAR: VALMAG;

NEWOBJ: CLSDEF and

CLSNAM;

RCTLPT : ORIENT;

RESARE: CATREA only present;

RESARE: RESTRN only present;

RESARE: CATREA and RESTRN

present;

STSLNE: NATION;

SWPARE: DRVAL1;

TESARE: NATION;

TS_PAD: TS_TSP.

Mandatory attribute has not

been populated with a value.

Populate mandatory attributes; in

these cases the object is

meaningless without this value.

3.5.2 and Supplement No.3

Ch.4 (3.5.2.1)

E

7. Amend Check 1669 for consistency as follows:

1669 For each OBSTRN feature object

where the attribute values do not

correspond to the table below.

OBSTRN object with

illogical attribute value

combinations.

Amend attributes in

accordance with the logical

values defined in the table.

6.2.2 W

VALSOU WATLEV QUASOU HEIGHT TECSOU SOUACC

not Present 1 OR 2 not Present Present not Present

7 not Present unknown not Present

Unknown 3, 4, 5 OR Unknown 2 OR not Present not Present not Present

7 not Present not Present not Present

< 0

4 1, 3, 4, 6, 8, 9 OR not

Present

not Present Optional

4 7 not Present not Present

0 5 1, 3, 4, 6, 8, 9 OR not

Present

not Present Optional

> 0

3 1, 3, 4, 6, 8, 9 OR not

Present

not Present Optional

3 7 not Present not Present

8. Check 1785 _ Logic of check has been inadvertently reversed during editing for edition 9.0.0. (reported

by ESRI)

Amend check 1785 as follows:

1785 For each feature object where

CONDTN is Equal to 4 (wingless)

AND CATLMK does not contain

the value 18 (windmill) AND does

not contain the value 19

(windmotor).

Object other than windmill

or windmotor with

CONDTN = 4 (wingless).

Remove value of CONDTN

or use an appropriate

LNDMRK object.

Logical consistency E

9. Add check solution to Check 1811 as follows:

1811 For each BRIDGE feature object

where CATBRG includes the

value 1 (fixed bridge) in

combination with at least one of:-

2 (opening bridge), 3 (swing

bridge), 4 (lifting bridge), 5

(bascule bridge) and 7 (draw

bridge).

CATBRG is populated with fixed and opening bridge values.

Remove incorrect

conflicting value of

CATBRG and/or recapture

fixed and opening sections

as separate BRIDGE

feature objects.

4.8.10 & logical

consistency.

E

10. Amend check 505 as follows:

505 If either M_COVR and M_NSYS

or M_QUAL meta objects do not

exist within the data set.

Mandatory feature objects

are missing.

Include mandatory feature

objects M_COVR and

M_NSYS. and M_QUAL.

3.4 and MD8 8.Co.6. C

11. Remove check 562:

562 Check removed.For each

NEWOBJ feature object where

INFORM does not commence

with the CLSNAM AND contain

the CLSDEF of the feature object.

The text in INFORM does

not commence with the

CLSNAM object or

contain the CLSDEF of

the NEWOBJ feature

object.

Ensure that the text in

INFORM commences with

the CLSNAM followed by

the CLSDEF of the

NEWOBJ feature object.

Supplement No.3

Ch.4 (3.3.1) and

Appendix B1, Annex

A (16)

W

12. Amend check 1750 as follows:

1750 For each LIGHTS feature object

which is a slave to a BOYXXX

feature object OR MORFAC

feature object where CATMOR =

7 (mooring buoy) AND HEIGHT is

Present.

HEIGHT populated for a

LIGHTS object which is

slave to a buoy object.

Remove HEIGHT from

LIGHTS object.

12.8.1 E

Comments by the ENCWG Chair, the HSSC Chair and IHO Secretariat:

The ENCWG Chair, HSSC Chair and IHO Secretariat thank Denmark for their comments. The late

amendments referred to by Denmark in the abovementioned comments 1-12 were reviewed and

approved by the ENCWG11 meeting (04-09 October 2026), with editorial amendments as required,

and resultant changes have been included in the final published Edition 9.0.0 of S-58.

INDONESIA (Vote for adoption = YES)

Indonesia approve the proposed Edition 9.0.0 of S-58. We believe this new edition will further improve

the quality and consistency of S-57 ENC validation, while also supporting the continued development

of S-100 standards.

Comments by the ENCWG Chair, the HSSC Chair and IHO Secretariat:

The ENCWG Chair, HSSC Chair and IHO Secretariat thank Indonesia for their comments.

IRAN (ISLAMIC REPUBLIC OF) (Vote for adoption = YES)

It is suggested that the status of the removal of Check 1693 be explicitly specified in the ""Summary

proposed Changes for S-58 Edition 9.0.0"" document. Currently, this matter is inconsistent with the

original text of the Standard.

Comments by the ENCWG Chair, the HSSC Chair and IHO Secretariat:

The ENCWG Chair, HSSC Chair and IHO Secretariat thank Iran for their comments, noting this omission

from the Summary of changes document.

MALAYSIA (Vote for adoption = YES)

Malaysia supports the adoption of S-58 Edition 9.0.0, particularly its improved validation logic to

ensure consistent implementation by ENC producers and validation software developers.

Comments by the ENCWG Chair, the HSSC Chair and IHO Secretariat:

The ENCWG Chair, HSSC Chair and IHO Secretariat thank Malaysia for their comments.

PERU (Vote for adoption = YES)

The update reorganizes and introduces new critical validation checks, adjusts attributes related to

depth controls (depth contours and bathymetric areas), and removes redundant checks, thereby

improving the consistency of the standard. Changes introduced in this new version of S-58 will be

reflected in updates (version changes) to the validator software used in our quality control processes.

Comments by the ENCWG Chair, the HSSC Chair and IHO Secretariat:

The ENCWG Chair, HSSC Chair and IHO Secretariat thank Peru for their comments.

SPAIN (Vote for adoption = YES)

Although the draft proposal is approved, it is noted that GitHub Issue #76 has not been included (link:

https://github.com/iho-ohi/ENCWG-S58-ENC-Validation-Checks/issues/76), which would address the

correction of S-58 check 1669. (see DK comment No. 3)

Comments by the ENCWG Chair, the HSSC Chair and IHO Secretariat:

The ENCWG Chair, HSSC Chair and IHO Secretariat thank Spain for their comments. The late

amendment referred to by Spain to update Check 1669 in accordance with GitHub Issue #76 was

approved by the ENCWG11 meeting (04-09 October 2026) and the resultant change has been included

in the final published Edition 9.0.0 of S-58.

THAILAND (Vote for adoption = YES)

HDRTN, Thailand reviewed draft Edition 9.0.0 of S-58 and we support the adoption of this Edition.

Comments by the ENCWG Chair, the HSSC Chair and IHO Secretariat:

The ENCWG Chair, HSSC Chair and IHO Secretariat thank Thailand for their comments.

UNITED KINGDOM (Vote for adoption = YES)

As already stated we are happy to approve but would like some historical issues identified in version 8

fixed if the ENC WG S-58 vice chair agrees.

Comments by the ENCWG Chair, the HSSC Chair and IHO Secretariat:

The ENCWG Chair, HSSC Chair and IHO Secretariat thank United Kingdom for their comments. The

issues were reviewed and the changes approved by the ENCWG have been included in the final

published Edition 9.0.0 of S-58.