![]() ![]() Speed too is measured with respect to something adjacent. ![]() But if you have different speed of water for all three conditions, you must read on. ![]() Ok, I hope you have your answers. If your answers for speed over water for all the three conditions is same, most likely you have got it. What will be speed over water and over ground in this case ?Ĭondition C: All other conditions being same but now we have 2 knots current from astern. What will be speed over water and over ground in this case ? The GPS speed of the ship is 15 Knots.Ĭondition B: All other conditions being same but now we have 2 knots current from ahead. Can you tell what is the speed over ground and speed over water in these three conditions ?Ĭondition A: No wind, no current, absolute ideal conditions. Do you know the answers of questions I asked above ? But before i start, I need you to ask yourself this question. So today i want to put all these doubt and confusions to rest once for all. What do you feel ?Īnd the confusion is not only what is the difference but also where and when these are used ? Why we need to have input of speed over water in radar ? Why do we have doppler log on board ? And many more questions like these. When it comes to speed over water vs Speed over ground, many of us get confused. ![]()
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