![]() ![]() If the boat moves outside of the green area an alarm is signaled. Hence, if the wind shifts and the boat drifts into the area which is blocked an alarm will be signaled. Any sector of the anchor circle can be excluded from the allowed swing area. Whatever the reason is, ‘My Anchor Watch’ supports it. Maybe we sneak up close to land to be more protected, or maybe we anchor close to a boat that is tied up to a bouy, or maybe we just want to know if the wind is shifting. It is not uncommon that we anchor in steady winds and therefore bet on that we will not swing around. ![]() Normally the accuracy is within 10 meters and often as low as 3 meters! The more satellites in view, the more accurate the positions will be. ![]() We also see that the last position received by the GPS on the phone indicates that we are 23 meters south and 9 meters west of the anchor position.ĭepending on the location and time of day, there will be a warying numbers of satellites in view. In the example to the left, we have 62 meters of chain (or rope or whatever) out and we have choosen to be alerted if we move more than 87 meters away from the anchor. If the position of the anchor in your program is not right, it is easy to move it around. When ‘dropping anchor’, the program starts registering all positions and plotting them on the screen. Should the boat move out of the green area, an alarm is triggered. The green area, which is surrounded by the red alarm line indicates the area during which the program is silent. The yellow line represents the cable (the maximum position the boat can move without the anchor dragging). In the graphical plot, the ancor is the white dot in the middle. The last GPS information is shown in the text table on the left and a graphical plot of the boats movements are shown in the graph in the middle. When starting ‘My Ancor Watch’ a basic screen is shown as here on the left. I don’t think I’ve ever seen such a sophisticated anchor alarm, and it’s an app called My Anchor Watch running on a Blackberry! ![]()
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