30 lines
1.4 KiB
Markdown
30 lines
1.4 KiB
Markdown
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---
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title: "Abbreviations"
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summary: "Making sense of TWA, AWA, TWD, BS etc etc."
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date: 2021-05-23T20:08:17+02:00
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type: book
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------
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# Sailing Instruments
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| Abbreviation | Technical name | Description |
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|---------------|----------------|-------------|
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| AWA | Apparent Wind Angle | Wind angle as seen onboard the boat
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| AWS | Apparent Wind Speed | Wind speed as seen onboard the boat
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| TWA | True Wind Angle | Wind angle compensated for the movement of the boat
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| TWS | True Wind Speed | Wind speed compensated for the movement of the boat
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| TWD | True Wind Direction | The magnetic orientation of the wind over ground |
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| GWD | Ground Wind Direction | The magnetic orientation of the wind (Same as TWD) |
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| BS | Boat Speed | Speed of the hull through the water |
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| VS | Velocity (Speed) | Speed of the hull through the water (Same as BS) |
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| SOG | Speed Over Ground | Speed from the GPS sensor |
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| HDG | Heading | Magnetic orientation of the bow. |
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| COG | Course Over Ground | GPS direction the boat is moving |
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| VMG | Velocity Made Good | How fast the is boat moving towards (or away) the direction of the wind.
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| CMG | Course Made Good | How fast the boat is moving towards the waypoint.
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| DTG | Distance To Go | Distance to next waypoint |
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| DTM | Distance To Mark | Distance to next mark (Same as DTG) |
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| TTG | Time To Go | Time to reach next waypoint
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| TTM | Time To Mark | Time to reach next mark (Same as TTG) |
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