SevenCs the ECDIS Company C ontent C overage C urrentness C ompleteness C onsistency C orrectness C ompatibility C

Business Activities Software Products and Development Chart Production and Distribution Training and Consulting

Business Activities Software Products and Development EC 2007 ECDIS Kernel compliant to IMO performance standard compliant to IHO S-52 and S-57 standards component of type approved ECDIS Systems ENC Tools for ENC production and updating quality control distribution Navigational Software

Business Activities Chart Production and Distribution according to S-57 standard according to S-57 product specification according to S-52 standard Training and Consulting introduction into the standards S-52, S-57 use of the object catalogue ENC Tool training

Ice Object Catalogue, Draft 2.0 and Presentation Ice in ECDIS Workshop, St.John’s June 5th and 6th, 2000 Ice Object Catalogue, Draft 2.0 and Presentation LtzS Kay Pahmeyer / Captain Wolf Scheuermann Presentation by Friedhelm Moggert

History of ice in ECDIS : February 1995 first workshop June 1995 second workshop SevenCs presents first draft object catalogue by IDON East Corporation (Doug O’ Brian) May 1996 third meeting proposal is agreed upon 1996/97 Draft 2.0 (Scheuermann / Pahmeyer)

The two ways of representing ice in charts: A: hatching of sea ice area used by European (Baltic Ice Services) Fast ice Bergy waters Consolidated, compacted or very close ice Level Ice

The two ways of representing ice in charts: B: the egg code mainly used by Canadian and American Ice Services

Examination of both types: Type A - hatching of sea ice areas total concentration is represented by different hatching patterns additional information is displayed with extra symbols area objects and their presentation can easily be realized with the existing standards

Only Type A proved to be useful for ECDIS presentations Type B - Egg Code : very complex, more details can be displayed egg symbol is cartographic object (must not be used in S-57) problem to display different attributes within the egg fields egg does not always fit into corresponding area huge amount of attribute combinations (results into huge amount of different egg objects) use of partial concentrations within one area (not compatible with S-57) Only Type A proved to be useful for ECDIS presentations

Ice Object Catalogue, Draft 2.0 and Presentation based on WMO Sea Ice Nomenclature compliance with standard S-57 objects compliance with standard S-52 catalogue consists of ice object classes and ice attributes basically ice coverage types, icebergs, ice drift, ice dynamics are displayed other information can be withdrawn from pick report (is not lost !!!)

Ice Object Classes plus 24 ice attributes Description Token Iceberg ICEBRG Ice Drift ICEDRF Ice Dynamics ICEDYN Floeberg ICEFLO Ice Line ICELIN Land Ice ICELND Ice Openings ICEOPN Ice Ridge ICERDG Ice Route ICERTE Sea Ice ICESEA Ice Topography ICETOP Ice Object Classes plus 24 ice attributes Description Token Iceberg Shape ICEBSH Coverage Type ICECVT Floe Size ICEFSZ Stage of Melt ICEMLT Snow Cover ICESCV Sea Ice Stage of dev. ICESOD . .

The Presentation in ECDIS display is similar to traditional ice charts information can be displayed together with nautical chart data presentation as overlay or integration of ice objects in base cell the display is generated in ECDIS application appearance depends on attribute combinations (special lookup tables) not all attribute values result into symbolization attributes that are not symbolized can be withdrawn via pick report conditional symbology procedure for ice thickness ECDIS typical display features (night display, SCAMIN, conditional symbology)

Example for presentation in ECDIS Display of different coverage types

Example for presentation in ECDIS detailed base chart with ice overlay

Traditional Ice Chart versus ECDIS Presentation Icebreaker Chart Source: German Ice Service Corresponding ECDIS presentation

Typical ECDIS display features night display

Typical ECDIS display features Conditional symbology depending on ICEMAX attribute

Typical ECDIS display features appropriate SCAMIN values should be applied

Typical ECDIS display features Pick report for additional attribute information

Display of point and line objects Source: Danish Ice Service Traditional ice chart

Display of point and line objects ECDIS display

Alternative display of ice characteristics ? The egg code in ECDIS

Updating of Ice Charts Ice services have to create updates and new editions of ice charts updates have to be created more frequently than for navigational charts S-57 update mechanism can be used update information must be provided on server computer data distribution via satellite, cell phones, radio link client applies updates (difference information) to last edition alternatively distribution of new editions instead of update mechanism

Open tasks and questions Ice services should evaluate this concept does the concept meet all requirements of ice services in practice are end users interested in ‘Ice in ECDIS’ are pilot projects useful to test the suggested concept can the ice objects be incorporated into the S-57 object catalogue does the concept meet ECDIS performance standards (overlay)