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UKHO seeks views from membership bodies and end-users on proposals to better serve the small craft leisure markethttps://rseedit.admiralty.co.uk/AdmiraltyPressReleasesLibrary/20191008 - ADMIRALTY Small Craft Folio Press Release.pdfUKHO seeks views from membership bodies and end-users on proposals to better serve the small craft leisure market2019-10-07T23:00:00Z
UKHO to lead LISW conversation on digital navigationhttps://rseedit.admiralty.co.uk/AdmiraltyPressReleasesLibrary/190909 - UKHO leads conversation at LISW on digital navigation and ECDIS.pdfUKHO to lead LISW conversation on digital navigation2019-09-08T23:00:00Z
ADMIRALTY Vector Chart Service (AVCS) is now available online to support shore-based decision makinghttps://rseedit.admiralty.co.uk/AdmiraltyPressReleasesLibrary/20190620_AVCSOnline_PressRelease_Final.pdfADMIRALTY Vector Chart Service (AVCS) is now available online to support shore-based decision making2019-06-19T23:00:00Z

 

 

ADMIRALTY Guide to Audits and Inspections | News | ADMIRALTYhttps://rseedit.admiralty.co.uk/news/all-news/admiralty-guide-to-audits-and-inspectionsADMIRALTY Guide to Audits and Inspections | News | ADMIRALTY2017-08-28T23:00:00ZADMIRALTY Guide to ECDIS Audits and Inspections<p class="admiraltyElement-P">​​​​​​​​​​​​​​Produced by maritime experts at the United​ Kingdom Hydrographic Office​, the <a href="/AdmiraltyDownloadMedia/Blog/ECDIS%20Audits%20and%20Inspections.pdf">ADMIRALTY Guide to Audits and Inspections​</a> identifies key issues which may be examined during any third-party inspection or audit of on-board ECDIS. This includes a checklist based on the <a href="http://www.imo.org/">IMO</a> ECDIS carriage requirement and Performance Standards, as well as explanatory notes that can help shipping companies to prepare for and pass ECDIS audits.<br><span style="font-family:"johnston itc w01 light", arial;font-size:1.3em;"><br></span></p><p class="admiraltyElement-P"> <a href="/AdmiraltyDownloadMedia/Blog/ECDIS%20Audits%20and%20Inspections.pdf" target="_blank">Download the Guide to ECDIS audits and Inspections</a> ​​​<span class="admiraltyStyle-pdf">​</span><br></p><p class="admiraltyElement-P">​<br>The guide also includes references to some IMO documents and <span style="font-family:"johnston itc w01 light", arial;font-size:20.8px;font-style:normal;font-weight:normal;">other ADMIRALTY </span><span style="font-family:"johnston itc w01 light", arial;font-size:20.8px;font-style:normal;font-weight:normal;"></span><span style="font-family:"johnston itc w01 light", arial;font-size:20.8px;font-style:normal;font-weight:normal;"></span><span style="font-family:"johnston itc w01 light", arial;font-size:20.8px;font-style:normal;font-weight:normal;"></span><span style="font-family:"johnston itc w01 light", arial;font-size:20.8px;font-style:normal;font-weight:normal;"></span> <span style="font-family:"johnston itc w01 light", arial;font-size:20.8px;font-style:normal;font-weight:normal;">publications </span>which can be used to support compliance including:</p> <br> <p class="admiraltyElement-P">> ​<a href="/_layouts/15/FIXUPREDIRECT.ASPX?WebId=6828029c-41f1-4124-bef3-6404266560b7&TermSetId=41e4d507-3ce2-45c5-9546-770d62bf0bc6&TermId=6fbbc1c7-2348-4a03-9975-f98b93078634" target="_blank">NP232 ADMIRALTY Guide to ECDIS Implementation, Policy and Procedures​</a></p><p class="admiraltyElement-P">> <a href="/_layouts/15/FIXUPREDIRECT.ASPX?WebId=6828029c-41f1-4124-bef3-6404266560b7&TermSetId=41e4d507-3ce2-45c5-9546-770d62bf0bc6&TermId=6fbbc1c7-2348-4a03-9975-f98b93078634" target="_blank">NP231 ADMIRALTY Guide to the Practical Use of ENCs​</a></p><p class="admiraltyElement-P">> <a href="/_layouts/15/FIXUPREDIRECT.ASPX?WebId=6828029c-41f1-4124-bef3-6404266560b7&TermSetId=41e4d507-3ce2-45c5-9546-770d62bf0bc6&TermId=6fbbc1c7-2348-4a03-9975-f98b93078634" target="_blank">NP5012 ADMIRALTY Guide to ENC Symbols used in ECDIS​</a></p><p class="admiraltyElement-P">> <a href="/_layouts/15/FIXUPREDIRECT.ASPX?WebId=6828029c-41f1-4124-bef3-6404266560b7&TermSetId=41e4d507-3ce2-45c5-9546-770d62bf0bc6&TermId=6fbbc1c7-2348-4a03-9975-f98b93078634" target="_blank">NP133C ADMIRALTY ENC Maintenance Record</a></p><p class="admiraltyElement-P">> <a href="/_layouts/15/FIXUPREDIRECT.ASPX?WebId=6828029c-41f1-4124-bef3-6404266560b7&TermSetId=41e4d507-3ce2-45c5-9546-770d62bf0bc6&TermId=9a507443-9225-4cca-881a-bdfbf06a7861" target="_blank">ADMIRALTY Vector Chart Service (AVCS) user guide</a></p><p class="admiraltyElement-P"> <br>​If you would like further information on preparing for ECDIS audits, our 'Living with ECDIS Seminars' are also designed to provide guidance on the latest issues relating to digital navigation and  help you ensure your fleet can remain compliant whilst getting the most from their ECDIS.</p><p class="admiraltyElement-P"> <a href="/_layouts/15/FIXUPREDIRECT.ASPX?WebId=6828029c-41f1-4124-bef3-6404266560b7&TermSetId=41e4d507-3ce2-45c5-9546-770d62bf0bc6&TermId=815e7e6b-02e9-4b14-9d4c-e37150da40fb" target="_blank">Find out more about the Living with ECDIS Seminars >​</a>​​​​<br></p><p class="admiraltyElement-P"> <br> </p>
Category Zones of Confidence (CATZOC) -dispelling the myths | News | ADMIRALTYhttps://rseedit.admiralty.co.uk/news/blogs/category-zones-of-confidenceCategory Zones of Confidence (CATZOC) -dispelling the myths | News | ADMIRALTY2017-03-16T00:00:00ZCategory Zones of Confidence (CATZOC) –dispelling the myths<p class="admiraltyElement-P">​​​​​​​​​​​​​​​​​​​​​​​​​Category Zone of Confidence (CATZOC) values are used to indicate the accuracy of data presented on charts to assist mariners with determining a safe Under Keel Clearance (UKC). This blog aims to answer 2 key questions that we regularly receive at our <a href="/_layouts/15/FIXUPREDIRECT.ASPX?WebId=6828029c-41f1-4124-bef3-6404266560b7&TermSetId=41e4d507-3ce2-45c5-9546-770d62bf0bc6&TermId=815e7e6b-02e9-4b14-9d4c-e37150da40fb">Living with ECDIS Seminars​</a> on this important feature: </p><div><ul class="admiraltyElement-P"><li><p class="admiraltyElement-P">“Do I need to revert to paper charts in areas where the ENC Category Zone of Confidence is set to C or less?” ​<br></p></li><li><p class="admiraltyElement-P">“Why do some paper charts have Source Diagrams and others have CATZOC Diagrams?” <br></p></li></ul><p class="admiraltyElement-P">​</p><h3 class="admiraltyElement-H3"> What is CATZOC?​</h3> <br> <p class="admiraltyElement-P">Category Zone of Confidence (CATZOC) values are assigned to geographical areas to indicate whether data meets a minimum set of criteria for position, depth accuracy and seafloor coverage. The Zone of Confidence (ZOC) value is dependent on the positional and depth accuracy of the survey.</p><p class="admiraltyElement-P">By understanding the accuracy limitations of the underlying data in greater detail, the mariner can manage the level of risk when navigating in a particular area.​</p><p class="admiraltyElement-P">ECDIS display these CATZOC values  in ENCs using a triangular or lozenge shaped symbol pattern. The number of stars contained within these symbols denotes the CATZOC value. For example six stars are given to the highest level of data quality (A1) and two stars to the lowest (D). A single star is not used to avoid possible confusion with a rock symbol. Areas that have not been assessed for CATZOC are shown as the symbol (U) for unassessed.</p><p class="admiraltyElement-P">Our Zones of Confidence (ZOC) table outlines the position accuracy, depth accuracy and seafloor coverage for each of these values to help you manage the levels of risk during navigation.</p><br>​​ <p class="admiraltyElement-P"> <a href="/AdmiraltyDownloadMedia/Blog/CATZOC%20Table.pdf">Download the Zones of Confidence (ZOC) table​</a> <span class="admiraltyStyle-pdf"></span></p><p class="admiraltyElement-P">​</p><h3 class="admiraltyElement-H3">Do I need to revert to paper charts in areas where the ENC Category Zone of Confidence is set to C or less?</h3> <br> <p class="admiraltyElement-P">No, you don’t. The same data is used for a paper chart and an ENC, therefore neither is more accurate than the other. In fact, an ENC can give you a greater insight into the data via the ’Quality of Data’ and survey reliability features.</p><p class="admiraltyElement-P">The example below clearly highlights that there is no additional information on the paper chart that would aid the mariner in calculating an under keel clearance, and therefore there is no requirement to switch from navigating with ENCs and ECDIS when the CATZOC value is C or less.​</p><p class="admiraltyElement-P"> ​<img class="admiraltyImage-contentImages admiraltyStyle-lightbox" src="/SiteCollectionImages/Blog%20Images/ENCvsPaperChart3.jpg" alt="" style="margin:5px;" /> </p><p> </p><h4 class="admiraltyElement-H4" style="text-align:center;"> GB ENC showing M_QUAL area with CATZOG value of C and source data diagram for paper chart BA1977</h4><p class="admiraltyElement-P" style="text-align:center;"> <br>  </p><h3 class="admiraltyElement-H3">Why do some charts have Source Diagrams and others have CATZOC Diagrams?</h3> <br> <p class="admiraltyElement-P">The Source Diagram on a paper chart is the traditional method of indicating when and how the survey was conducted to collect the hydrographic data. From this information, the mariner must deduce the degree of confidence to place in charted data. </p><p class="admiraltyElement-P">By including CATZOC Diagrams on paper charts, more detail is provided on the accuracy of the underlying hydrographic information than was previously available in the Source Diagram. Providing this additional detail means that the mariner can make more informed decisions when passage planning and calculating under keel clearances. </p><p class="admiraltyElement-P">As you can see from the examples below, the UKHO are gradually moving to a new style of Source Diagrams including ZOCs.​</p><p class="admiraltyElement-P"> ​ <img class="admiraltyStyle-lightbox admiraltyImage-contentImages" src="/SiteCollectionImages/Blog%20Images/SourceDiagramandCATZOG3.jpg" alt="" style="margin:5px;" /> <br></p><h4 class="admiraltyElement-H4" style="text-align:center;">New CATZOC diagram (top) and traditional source diagram (bottom)</h4></div><div><br> </div><h4 class="admiraltyElement-H4">This blog was written by Thomas Mellor, the Head of OEM Technical Support and Digital Standards at the UKHO​. He's also speaker at the UKHO's 'Living with ECDIS' Seminars which are designed to help ship managers and officers to understand the latest legal and maintenance issues in relation to ECDIS. <a href="/_layouts/15/FIXUPREDIRECT.ASPX?WebId=6828029c-41f1-4124-bef3-6404266560b7&TermSetId=41e4d507-3ce2-45c5-9546-770d62bf0bc6&TermId=815e7e6b-02e9-4b14-9d4c-e37150da40fb">You can find out more about these seminars here</a>.</h4><div>​​<br>​</div>

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Notice for upcoming Global Positioning System Week Rollover | News | ADMIRALTYhttps://rseedit.admiralty.co.uk/news/all-news/notice-for-upcoming-global-positioning-system-week-rolloverNotice for upcoming Global Positioning System Week Rollover | News | ADMIRALTY2019-03-12T00:00:00ZNotice for upcoming Global Positioning System Week RolloverNews
ADMIRALTY 'A Future with ECDIS' Seminars | News | ADMIRALTYhttps://rseedit.admiralty.co.uk/news/all-news/admiralty-a-future-with-ecdis-seminarsADMIRALTY 'A Future with ECDIS' Seminars | News | ADMIRALTY2018-08-06T23:00:00ZADMIRALTY 'A Future with ECDIS' seminarsNews
UK Hydrographic Office releases new API to give developers easy access to UK tidal data | News | ADMIRALTYhttps://rseedit.admiralty.co.uk/news/all-news/ukho-releases-new-tidal-apiUK Hydrographic Office releases new API to give developers easy access to UK tidal data | News | ADMIRALTY2018-06-05T23:00:00ZNew ADMIRALTY API to give developers easy access to UK tidal dataNews