Talk:Ground speed

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I Changed "over the ground" to "relative to the ground". This makes it obvious that it is the speed of the airplane that is measured against the ground, as opposed to it possibly meaning that the airplane itself is over the ground at the time you measure its speed. 212.138.64.171 16:45, 13 December 2005 (UTC)

[edit] merger proposal

Ground speed is not an airspeed; it is a vehicle's speed over the ground rather than through the air (a medium which can itself be moving). They're totally different concepts, and it wouldn't make any sense at all to merge them. ericg ✈ 04:05, 23 October 2006 (UTC)

[edit] What about vessels?

I came to this page from a link on the Knots page and was surprised to find that this page only references aircraft. What about boats? Ground speed relates to vessels also because speed on water is not the same as on land. There are factors to take in to consideration such as the speed of the fluid which the vessel is in, wind speed etc. That's really just what I've learnt from the 'Knots' page so if anyone knows anymore about the aquatic side of ground speed, it would be helpful to be included in this page. Or is there another name for the aquatic version of ground speed? - Frank --202.138.10.189 (talk) 09:11, 16 December 2007 (UTC)