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---
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# Page title
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title: Sail Racing Library
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# Title for the menu link if you wish to use a shorter link title, otherwise remove this option.
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linktitle: Sailing Library
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# Page summary for search engines.
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summary: Terms, abbreviations, ticks, tricks and much more related to sailboat racing.
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# Date page published
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date: 2021-05-23
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# Academic page type (do not modify).
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type: book
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# Position of this page in the menu. Remove this option to sort alphabetically.
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weight: 1
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---
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- Instruments
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  - Abbreviations
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  - NMEA0183/NMEA2000
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  - Smart phone apps
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  - Notes on instruments
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- Rules
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  - Offical rule links
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  - Reading guidelines
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  - Flowcharts
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  - Protest Hearings
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  - Rule 42
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- Racing
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  - The race course
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     - Terms
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     - Lifts/Headers
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     - Current
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  - Handicap systems
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  - Boat optimizations 
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- Crew positions
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  - Bow
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  - Mast
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  - Pit
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  - Trimmer
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  - Tailor
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  - Mainsail
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  - Helmsman
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  - Navigator/Tactician 
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- Dinghy Sailing
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- Sails
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  - Main
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  - Jib/Genoa 
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  - Downwind sails
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  - Others (Code, Drifter, Blooper, Staysail)
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---
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title: Instruments
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date: 2021-05-23
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type: book
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weight: 1
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---
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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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---
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title: Rules
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date: 2021-05-23
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type: book
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weight: 1
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---
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---
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title: Rule flowchart
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date: 2021-05-23
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type: book
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weight: 1
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---
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```mermaid
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graph TD
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    Start[Started] --> B{Same tack?};
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    B -- Yes --> C[Overlapped];
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    B -- No --> D[Non overlapped]
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    C --> D[Rethink];
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    D --> B;
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    B -- No ----> E[End];
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```
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							@@ -3,6 +3,6 @@ module code.jcktrue.dk/jct/jcktrue.dk
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go 1.15
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require (
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	github.com/wowchemy/wowchemy-hugo-modules/wowchemy v0.0.0-20210531181349-70cef473aec5 // indirect
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	github.com/wowchemy/wowchemy-hugo-modules/wowchemy v0.0.0-20210604173804-c0d8f2a41a8e // indirect
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	github.com/wowchemy/wowchemy-hugo-modules/wowchemy-cms v0.0.0-20210425191248-0afcc81296de // indirect
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)
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							@@ -42,5 +42,7 @@ github.com/wowchemy/wowchemy-hugo-modules/wowchemy v0.0.0-20210526223849-81ba175
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github.com/wowchemy/wowchemy-hugo-modules/wowchemy v0.0.0-20210526223849-81ba17522966/go.mod h1:H22qfH9qj3FWwsk7+bAZpmT24yRGNQURah2/IRwjbn8=
 | 
			
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github.com/wowchemy/wowchemy-hugo-modules/wowchemy v0.0.0-20210531181349-70cef473aec5 h1:Ew4ZlIU/Yn2oh4RLlLzaGXFXpLOOPZRRy2Qa7LroRs8=
 | 
			
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github.com/wowchemy/wowchemy-hugo-modules/wowchemy v0.0.0-20210531181349-70cef473aec5/go.mod h1:H22qfH9qj3FWwsk7+bAZpmT24yRGNQURah2/IRwjbn8=
 | 
			
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github.com/wowchemy/wowchemy-hugo-modules/wowchemy v0.0.0-20210604173804-c0d8f2a41a8e h1:jdQ5yczffpGdCzuC+EqSAiyCKCl3wcgqLJ3bcFXv6w0=
 | 
			
		||||
github.com/wowchemy/wowchemy-hugo-modules/wowchemy v0.0.0-20210604173804-c0d8f2a41a8e/go.mod h1:H22qfH9qj3FWwsk7+bAZpmT24yRGNQURah2/IRwjbn8=
 | 
			
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github.com/wowchemy/wowchemy-hugo-modules/wowchemy-cms v0.0.0-20210425191248-0afcc81296de h1:J7MkieFVezVdQHtAvCOvAAaUv83oVMRqWzt7qkkUlPw=
 | 
			
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github.com/wowchemy/wowchemy-hugo-modules/wowchemy-cms v0.0.0-20210425191248-0afcc81296de/go.mod h1:AKpYbqUVlj0VYsc7Jsxe1o8Ko2yV31A5ZPdfpACcXJw=
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