MD_SecurityConstraints>MD_ClassificationCode (codelist) 3. confidential 4. secret 5. top secret purpose 1 {1} to {5} CharacterString MD_Identification>purpose (character string) 1. New Dataset 2. New Edition 3. Update 4. Re-issue 5.Cancellation specificUsage 1 {1} to {3} CharacterString MD_USAGE>specificUsage (character string) MD_USAGE>userContactInfo (CI_ResponsibleParty) 1. Port – A dataset containing data required: For navigating the approaches to ports for navigating within ports, harbours, bays, rivers and canals, for anchorages as an aid to berthing or any combination of the above. 2.Transit – A dataset containing data required for : navigating along the coastline either inshore or offshore navigating oceans, approaching coasts route planning or any combination of the above. 3.Overview – A dataset containing data required: for Ocean Crossing route planning
and the conventional paper chart do not necessarily have to be identical in their appearance. ECDIS combines chart and navigational positioning information. It should be noted that modern navigation systems (For example, differential GPS) may offer a more accurate positioning than was available to position some of the surveys from which the digital chart data ENC was derived. The display categories specified in the IMO ECDIS Performance Standards and the IHO priorities of the various types of chart information (alarms, updates, mariners and non-HO chart data, etc.) are applied to every feature by the display category and draw priority assignments that are contained within the S-101 portrayal catalogue. Depth information should only be displayed as it has been provided in the ENC and not adjusted by tidal height. If the ECDIS has integrated the use of a S-100 based tidal product specification, it may display the adjusted tide as an italicized offset to the sounding in the ENC. C2.1.2 Function and Use of S-101 portrayal The IHO has produced S-101, in to ensure that hydrographic data supplied by its Member States' HO is used in a manner that will enhance the safety and efficiency of navigation by satisfying the requirements set out in the IMO ECDIS Performance Standards. Users of these Specifications should also refer to publications of the International Electrotechnical Commission (IEC) when dealing with equipment design and tests. C2.1.3 Type Approval - Minor Deviations to the S-101 Portrayal Catalogue It is acknowledged that the manufacturers of navigational equipment and software are in constant contact with ECDIS users. To allow for fast response to suggestions for improvement to the chart display, the IHO S-101 Product Specification for ECDIS is designed to provide a framework and guideline for chart symbolization from which the ECDIS manufacturer may derive a customized presentation. The following criteria should serve as a guide for judging whether any symbolization on an ECDIS which is visibly different from the symbolization provided by the IHO S-101 Portrayal Catalogue and as demonstrated by the IHO Test Dataset print-outs is still compliant. The symbolization used: should be the same in general shape and size as the IHO version; should be and sharp so that there is no uncertainty over meaning; should be close enough to the IHO version to avoid ambiguity in meaning between that model and any other model of ECDIS; should use only the colours as specified in S-101;
ECDIS Textual Output featureName displayDame Charmouth C2.5.2 Alphanumeric Examples NEED to add XML example for displaying text and then rework the as a so show what attributes are being called from the model. Name Description ECDIS Display ECDIS Textual Output Nr (string from attribute OBJNAM) NEED to add XML example for displaying text and then rework the as a so show what attributes are being called from the model.
C2.10.3 Graticule If the ECDIS shows a graticule (IMO PS [2]) the lines should be one unit wide, CHBLK. C2.10.4 Display Mode The ECDIS manufacturer should provide the indication of display mode required in the display base by IMO PS [2]. C2.10.5 Shallow Water Pattern When the entire water area on the ECDIS display is of less depth than the safety contour, it is not possible for the Mariner to easily detect this problem. The issue is exacerbated when the ECDIS is set to night mode due to the small differences between the depth area shades in the ECDIS chart display. Therefore S-101 provides a faint lattice pattern DIAMOND1 to distinguish shallow water. The Mariner must be provided with a selection to turn the shallow water pattern on or off from within the ECDIS Symbol DIAMOND1 Display Priority 3 Over Radar S Display Category Standard Viewing Group 23010 C2.10.6 Black Level Adjustment Symbol Unless the brightness and contrast controls of the monitor, are properly adjusted there is a danger that information may be lost from the chart display, particularly at night. Symbol BLKADJ is provided for checking correct adjustment and for re-adjusting as necessary. It should be available for call-up by the Mariner as required. C2.10.7 Detection and Notification of Navigational Hazards The IMO Performance Standard for ECDIS MSC.232(82) clauses, 11.3.5 Route planning states; “An indication should also be given if the Mariner plans a route closer than a user-specified distance from a point feature, such as a fixed or floating aid to navigation or isolated danger”. Clause 11.4.6 Route monitoring states; “An indication should be given to the Mariner if, continuing on its present course and speed, over a specified time or distance set by the Mariner, own ship will pass closer than a user-specified distance from a danger (For example, obstruction, wreck, rock) that is shallower than the Mariner's safety contour or an aid to navigation”. The following lists the S-101 features and their attributes that satisfy the conditions above and should precipitate an indication within the ECDIS. The point, curve or surfaces should be graphically indicated using the instructions contained in the portrayal catalogue named “indhlt”. “indhlt” is not an
PSSA (Particularly Sensitive Sea Area) RestrictedArea categoryOfRestriction = 28 SURFACE C2.10.8 Visualization of the Safety Contour The safety contour is defined as an edge between safe and unsafe skin of the earth features. C2.10.9 Detection of Safety Contour The IMO Performance Standard for MSC.232(82) clause 11.3.4 Route Planning states; “An indication is required if the Mariner a route across an own ship's safety contour” Clause 11.4.3 Route Monitoring states; "ECDIS should give an alarm if the ship, within a specified time set by the Mariner, is going to cross the safety contour". The following table specifies the S-101 features, conditions and geometry that constitute the safety contour and should therefore be used when raising the safety contour alarm. The point, line or surface should be graphically indicated using the presentation named as “dnghlt” in the portrayal catalogue, as depicted in Figure 8. S-101 Feature Condition Geometry DepthArea *DEPARE03 “UNSAFE=TRUE” SURFACE DredgedArea *DEPARE03 “UNSAFE=TRUE” SURFACE FloatingDock - CURVE, SURFACE Hulkes - SURFACE LandArea - POINT,CURVE, SURFACE Pontoon - CURVE, SURFACE UnsurveyedArea - SURFACE ShorelineConstruction - POINT,CURVE, SURFACE Fig 8. Example Danger Highlight in ECDIS C2.11 Hydrographic Office Specified Display Features C2.11.1 Supplementary Information Additional chart content is encoded using the information type SupplementaryInformation. This information type is associated to S-101 features suing the information association, AdditionalInformation. The information type SupplementaryInformation carries attributes that must be discoverable.