navigational data Radar Integrator Board autopilot data current course segment transmission Navigation databases Tides and tidal currents Seasonal currents Weather forecast chart overlay Potential Errors in Marine Navigation On a number of occasions chart data, particularly in canals, locks, harbours, ports and alongside wharves could not withstand the resolution of the ECDIS ‘zooming’ function. In many instances, the result has been that the ship’s image on an ECDIS display is depicted as overlapping the dock or jetty. There are many contributing factors that may suggest that the ship’s image on the ECDIS screen is portrayed where ‘it does not belong’. These are due to GPS errors; DGPS errors; ECDIS errors; Installation errors; ENC conversion errors; chart errors; and hydrographic survey errors
RNC data format and production RNCs are normally produced by digitally scanning the stable colour bases used in the multi-colour printing process. Unlike ENCs there is not a single accepted format for RNCs. The main formats are • BSB (used by USA, Canada, Cuba and Argentina), and • HCRF (used by UK, Australia and New Zealand). RNC Visualisation • RNCs are designed to be displayed at the same resolution as that which they are provided. Excessive zooming in or out of the same image seriously degrades the RNC image. RCDS allows charts of appropriate scale to be displayed; when the user wants to zoom in then a larger scale chart will be displayed and similarly on zooming out a smaller scale chart will be used; • Orientation of the RCDS display to other than north-up (e.g. course-up or route-up), may affect the readability of chart text and symbols;
and reported to us (Dowco) via Webex / Emails when where changes needed to be made. What exactly is the Webex? Now Webex has be bought by this software called goTo Meeting. It just an online, basically share your desktop with somebody else. Like I’m talking to you right now, I could be showing you my model on your computer, or even controlling your computer, and while we are talking, we are zooming in and zooming out, opening the model, doing whatever. It is not Tekla related, it is independent, like a Windows program. Construction 10. Did the steel erector use BIM to plan their work? If yes, please describe. Yes, erector (LPR) 11. Did the project utilize 4D (sequencing)? If yes, please describe. Yes, General Contractor, M.A. Mortenson Company 12. Were BIM models used for site planning (e.g. cranes)? If yes, please describe.
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