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Joined: 15 Jul 13
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Posts: 93 		Post Options Post Options   Quote i tick Quote  Post ReplyReply Direct Link To This Post Topic: VMG
    Posted: 04 Sep 13 at 12:16pm


What is VMG ?
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Ruscoe View Drop Down
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Posts: 1514 		Post Options Post Options   Quote Ruscoe Quote  Post ReplyReply Direct Link To This Post Posted: 04 Sep 13 at 12:18pm
Velocity made good
 

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Posts: 93 		Post Options Post Options   Quote i tick Quote  Post ReplyReply Direct Link To This Post Posted: 04 Sep 13 at 12:23pm
Thanks. So on the tracks from Sailfest it is 'calculating' VMG as the boats proceed. I will look at it all again.
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Posts: 3011 		Post Options Post Options   Quote RS400atC Quote  Post ReplyReply Direct Link To This Post Posted: 04 Sep 13 at 12:39pm
It is a term not unique to sailing, and not uniquely used for the windward (or even leeward) component of speed.
It can mean the component of your SOG toward a waypoint. (Mr Garmin uses it for this, being wind agnostic).
In the case of sailing upwind, some people use it loosely to mean either progress in the current true up wind direction, progress in the 'average' upwind direction, or progress toward the windward mark.
 
Likewise on a leeward leg it can be used for progress downwind/towards the leeward mark.
 
It can also be used for progress uptide, or just SOG and COG.
 
 
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Posts: 2143 		Post Options Post Options   Quote getafix Quote  Post ReplyReply Direct Link To This Post Posted: 04 Sep 13 at 2:41pm
Visibly Massive Grin

Usually a direct result of a great race, a great reach across the bay, some quality post-race 'refreshment' and/or possibly some post race 'stretching' exercises, if your partner is in the mood as well....

either that or a term which may provoke more debate about whether the pole lifts the bow or not, or what constitutes a "bandit" !
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Posts: 3011 		Post Options Post Options   Quote RS400atC Quote  Post ReplyReply Direct Link To This Post Posted: 04 Sep 13 at 3:09pm
Variously Modified Guesswork?
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Posts: 556 		Post Options Post Options   Quote Dougal Quote  Post ReplyReply Direct Link To This Post Posted: 04 Sep 13 at 9:11pm
Voracious Man-eating Girls?
What could possibly go wrong?
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Posts: 6499 		Post Options Post Options   Quote iGRF Quote  Post ReplyReply Direct Link To This Post Posted: 05 Sep 13 at 8:32am
And there was me always thinking it meant Vector Made Good. Given the tacks and or gybes combine to make a vector.
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Posts: 93 		Post Options Post Options   Quote i tick Quote  Post ReplyReply Direct Link To This Post Posted: 05 Sep 13 at 8:37am
And there was me thinking everyone except me knew and it seems there are a variety of answers. Emporers New Clothes?
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Posts: 8956 		Post Options Post Options   Quote Rupert Quote  Post ReplyReply Direct Link To This Post Posted: 05 Sep 13 at 9:09am
Saying "the combination of speed and direction you need to go in to get from point A to point B in the shortest poosible time" every time, rather than VMG, would be a bit long winded.

RS400 atC would appear to have a pretty good real-world translation, especially for dinghies with no instruments.
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