Admiralty Quick Guide to ENC Symbols PDF

This quick reference guide is to help you recognise some of the lesser known ENC symbols. It is not intended to replace...

This quick reference guide is to help you recognise some of the lesser known ENC symbols. It is not intended to replace ‘ECDIS Chart 1’. The ENC Symbols shown are in daytime colours. They may be shown in different colours/shades in other palettes. For further guidance on ENC Symbols see NP5012-ADMIRALTY Guide to ENC Symbols used in ECDIS. Quick Guide to ENC Symbols Third Edition Serving our users 24/7, worldwide , Planning for the future? 365 days a year AIS Aids to Navigation (AIS AtoN) Quick Guide to Virtual AIS AtoN Symbols Plan with ADMIRALTY Nautical Products & For more information and advice, contact An AIS AtoN is a digital aid to navigation promulgated by an authorised Services, brought to you by the United our global network of chart agents. service provider using AIS Message 21 “Aids to navigation report” that Kingdom Hydrographic Office. is portrayed on devices or systems such as ECDIS, radar or Integrated Alternatively our in-house customer Navigation System. For more world-class, world-leading service team are available day in, ENC Symbol Explanation ENC Symbol Explanation products and services visit our website day out – whatever the query and An AIS AtoN can either be Physical or Virtual: www.admiralty.co.uk wherever your journey takes you. Port lateral V-AIS North Cardinal V-AIS Physical AIS AtoN (IALA A) A Physical AIS AtoN represents an AtoN that physically exists. A Physical AIS AtoN is not normally encoded in an ENC, however if encoded the V-AIS East Cardinal V-AIS Starboard lateral information can be found through the pick report when querying the aid (IALA A) to navigation. Port lateral V-AIS South Cardinal V-AIS Virtual AIS AtoN (IALA B) A Virtual AIS AtoN represents an AtoN that does not physically exist and is therefore only visible on display systems. Applications of Virtual V-AIS West Cardinal V-AIS Starboard lateral AIS AtoN include the timely marking of new wrecks, floating debris, (IALA B) uncharted hazards, and virtual shipping lanes or in circumstances where a The United Kingdom Hydrographic Office, physical AtoN cannot be established. Admiralty Way, Taunton, Somerset, V-AIS Isolated Danger V-AIS Special Purpose TA1 2DN, United Kingdom Virtual AIS AtoN are only shown in an ENC, where it is known that the Telephone +44 (0)1823 723366 Virtual AtoN is permanent, or deployed for a specific fixed period; they Fax +44 (0)1823 330561 MANAGEMENT SYSTEMS [email protected] are easily identified by the symbols shown in the table below. Emergency 013 V-AIS Safe Water V-AIS www.admiralty.co.uk Wreck Marking Please note that in addition to the ENC symbols shown below, other symbols (normally in the shape of a diamond) may exist for AIS AtoN in and are trademarks of the Secretary of State for Defence ECDIS when within broadcast range however as these are not included in the ENC data they have not been included in this quick guide. 42380 © Crown Copyright 2013. All rights reserved. Correct at the time of printing. ENC Symbol Explanation Additional Information 5011 ENC Symbol Explanation Additional Information 5011 Ref Ref Generic isolated danger symbol – with less Wreck, rock or obstruction K Indicates that an additional The information, note or graphic can depth than user-selected safety contour or information note or picture be found using cursor enquiry where the depth is unknown file is available Sounding of low accuracy Equates to sounding of I2 Non-tidal current direction H42 doubtful depth I14 Spring tide – Ebb H41 Flood H40 6 stars A1 All significant seafloor features detected; very high accuracy survey Light vessel/lightfloat P6 5 stars A2 All significant seafloor features detected; high accuracy survey Q30 4 stars B Uncharted features dangerous to navigation are not expected but may Daymarks Q82- exist; medium accuracy survey 126 3 stars C Depth anomalies may be expected; low accuracy survey or passage soundings New Object – Point New type of feature not yet known 2 stars D Large depth anomalies may be expected; poor quality data to ECDIS – further information New Object – Line U available by cursor enquiry U Quality of bathymetry yet to be assessed New Object – Area Caution area where a specific caution note Refer to cursor enquiry to N27 applies access additional information Symbol setting on ECDIS Refer to ECDIS Chart 1 for For details of the IALA Maritime Buoyage System. Refer to NP 735 Simplified Traditional more examples Lateral beacons – red/green IALA applicable system Dredged area deeper than safety contour Refer to cursor enquiry for I20 Lateral conical buoys IALA applicable system Q130.1 more information - red/green, according to Darker blue indicates water shoaler than applicable IALA system safety contour Lateral can buoys – red/green IALA applicable system Q130.1 Vertical lines indicate areas of charted data at Zoom out until vertical lines Cardinal marks north/east/ Q130.3 significantly smaller scale than main display disappear to view at scale south/west (Cardinal mark appropriate to data north shown for Traditional) Indicates boundary between IALA A and B See NP735 A B A B buoyage systems Isolated danger marks Q130.4 Isolated query indicates insufficient Query may appear alone at a Q80 information to symbolise the feature point, on a line or in a defined H40- area. Further information 43 Safe water buoy Q130.5 Query associated with symbol indicates absence of a mandatory attribute, such as may be obtained from cursor M27.2 beacon shape, direction or orientation enquiry of the query Special marks Shape/topmarks are optional – Q130.6 colour yellow Limit between area of unofficial vector data May be shown the other and official ENC data, marked by orange way around on older ECDIS. Special purpose buoys, for Shape/topmarks optional – Q130.6 pecked line – pecks angled towards unofficial Within areas of non-ENC data, example; TSS lane markers colour yellow vector data an alternative, official chart must be used for navigation Buoy – mooring Q40 Quick Guide to ENC Symbols (Third Edition)