UKHO HD ENCs Experience with SCAMIN and Contour Ranges
Explore the UKHO HD ENCs experience presented by Jason Scholey, featuring insights on the use of SCAMIN to prevent contours from displaying, contour ranges for vessels constrained by draught, issuance as separate ENCs, compilation scales, and user research feedback on the need for expanded coverage in critical waterways. Learn about the importance of display scales, awareness of UKHO usage bands, and the push for more comprehensive HD ENC coverage by bridge teams.
Download Presentation
Please find below an Image/Link to download the presentation.
The content on the website is provided AS IS for your information and personal use only. It may not be sold, licensed, or shared on other websites without obtaining consent from the author. If you encounter any issues during the download, it is possible that the publisher has removed the file from their server.
You are allowed to download the files provided on this website for personal or commercial use, subject to the condition that they are used lawfully. All files are the property of their respective owners.
The content on the website is provided AS IS for your information and personal use only. It may not be sold, licensed, or shared on other websites without obtaining consent from the author.
E N D
Presentation Transcript
HD ENCs UKHO Experience Presented by Jason Scholey WENDWG10
Use of SCAMIN SCAMIN applied to prevent contours from displaying unless requested by user in their shading and Safety settings Standard contours (5m, 10m, 15m in this case) are always shown Example shows 14m Safety Contour; 2-colour shading; Set Top- ignore SCAMIN, bottom - use SCAMIN
Contour range Contours were added at 1m intervals only for vessels constrained by draught Therefore other features are not obscured by excessive contour lines Fewer contours means smaller file Example shows 25m Safety Contour; 4-colour shading; Set to ignore SCAMIN
Issued as separate ENCs Depth areas do not close out at the edge of the survey Gives mariner true representation of data Easier to issue New Editions Example shows 25m Safety Contour; 4-colour shading; Set to ignore SCAMIN
Compilation scale Important to research the display scale used on vessels during navigation If compilation scale is too large, HD ENC may never display at the scale used at sea effort is wasted Example shows 25m Safety Contour; 4-colour shading; Set SCAMIN; Display scale 1:75,000
Awareness UKHO adds the letter H after the usage band to identify them in a catalogue listing
User research Bridge teams strongly support HD ENCs and want much more coverage (don t understand why not available already) Needed in critical waterways e.g. rivers Currently Safety Contour is often useless Want coverage alongside restricted channels for contingency planning and collision avoidance. Must be compiled in Usage band that is equivalent to radar scale in use otherwise will not be visible.
