Follow Vessel and Course-Up Mode If you have a GPS fix, the display will show your vessel in its current location. If you want to rotate back to True North-up, you can touch this symbol and the display will rotate back to True North being up. If you rotate the display, this symbol will rotate as well. True North Compass Navigate Tab 2ģ The top left corner of the Navigation tab is an orange compass rose indicating direction of True North on the display.
It is divided into 10 segments, each one cable (0.1nm) in length. If the scale bar is orange and grey, it represents 1nm in length. It is divided into 5 segments of equal length. If the scale bar is black and grey, then it represents 10nm in length. In some cases the entire scale bar may not be visible. Scale Bar On the left side of the display is a scale bar indicating the current display scale. SEAiq attempts to make it easy for you to access all information. Many mariners are not aware how much information is stored in vector charts, in part because most chart plotters either strip this information out or don't make it accessible. We encourage new users to try this feature out. Most features have more information and you can read it by pressing the detail button on the row. You will be presented with a list of symbols near where you touched and what feature is represents. Details for this Location If you want to know what any symbol represents you can double tap on it and select "Details for this Location". See the Settings section for more information.
These include: units for depth soundings, colors to assign different water depths, and color modes to protect your night vision. A number of aspects of the chart display can be changed according to your preferences. Symbols are specifically generated for your displays characteristics. Symbols and other display characteristics come from the S-52 standard. This helps reduce clutter and is part of what gives vector charts their "smooth scaling." The chart display aims to follow the relevant International Hydrographic Organization (IHO) standards. Additionally, most vector charts provide so-called SCAMIN information that tells SEAiq at what scale different features should show up. SEAiq uses "chart quilting" algorithms to automatically select which charts to display depending on what charts are covered by the area of the display, the scales of the charts, and how far zoomed in you are. You can see the chart by zooming into the display. Any charts you have downloaded will show up as light magenta outlines on the display. When you first open SEAiq you will see the base chart of the world. SEAiq works like most ipad apps using the standard gestures for panning, zooming, and rotating the display. 1Ģ Navigate Tab The Navigate Tab is used to display the current sets of charts along with any additional objects, such as waypoints, routes, AIS targets, and your vessel's position. Files: Manage marine charts and other data files. Settings: Adjust settings to control operation of the app. Routes: View and edit routes and waypoints. It is organized around the Tabs at the bottom of the SEAiq apps: Navigate: Display marine charts and navigation objects. 1 This documents the use and operation of the SEAiq marine navigation software.
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