The isolated danger indicators are shown or hid based on the safety depth/contour setting. * Safety Depth: 5 meters to get highlighted soundings where I should not anchor due to weed/grass and to get rid of unimportant isolated dangers. * Shallow: 2 meters > Dark blue: keep out. They can be used in different ways but my boat (1.7 meters depth) and own philosophy gives this: Users generally prefer rhumb line because Could happen with a large motor vessel, I suppose… Rare indeed would be the case in which a two-point route long enough to benefit from GC Sailing would be traveled without need to change course for other tactical reasons (weather, traffic, etc.). Of course, other chart plotters may do this differently from OpenCPN. If the A/P is doing GC Sailing, then you would see the XTE reported by OpenCPN diverging from zero, as expected. If the A/P uses only XTE, then it is sailing Rhumb Line.Īlternatively, if it ignores XTE, and computes a running GC course based on the target waypoint location and current ownship position, then it is doing GC Sailing. The current GPS position and the target waypoint position are available in the messages sent above. ![]() If an autopilot is steering the boat, it may choose to follow GC route if it wants to. The Cross-track error (XTE) output by OCPN is calculated as for Rhumb Line Sailing, i.e.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |