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---
# Page title
title: Sail Racing Library
# Title for the menu link if you wish to use a shorter link title, otherwise remove this option.
linktitle: Sailing Library
# Page summary for search engines.
summary: Terms, abbreviations, ticks, tricks and much more related to sailboat racing.
# Date page published
date: 2021-05-23
# Academic page type (do not modify).
type: book
# Position of this page in the menu. Remove this option to sort alphabetically.
weight: 1
---
- Instruments
- Abbreviations
- NMEA0183/NMEA2000
- Smart phone apps
- Notes on instruments
- Rules
- Offical rule links
- Reading guidelines
- Flowcharts
- Protest Hearings
- Rule 42
- Racing
- The race course
- Terms
- Lifts/Headers
- Current
- Handicap systems
- Boat optimizations
- Crew positions
- Bow
- Mast
- Pit
- Trimmer
- Tailor
- Mainsail
- Helmsman
- Navigator/Tactician
- Dinghy Sailing
- Sails
- Main
- Jib/Genoa
- Downwind sails
- Others (Code, Drifter, Blooper, Staysail)

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---
title: Instruments
date: 2021-05-23
type: book
weight: 1
---

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

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---
title: Rules
date: 2021-05-23
type: book
weight: 1
---

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---
title: Rule flowchart
date: 2021-05-23
type: book
weight: 1
---
```mermaid
graph TD
Start[Started] --> B{Same tack?};
B -- Yes --> C[Overlapped];
B -- No --> D[Non overlapped]
C --> D[Rethink];
D --> B;
B -- No ----> E[End];
```

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go.mod

@ -3,6 +3,6 @@ module code.jcktrue.dk/jct/jcktrue.dk
go 1.15 go 1.15
require ( require (
github.com/wowchemy/wowchemy-hugo-modules/wowchemy v0.0.0-20210531181349-70cef473aec5 // indirect github.com/wowchemy/wowchemy-hugo-modules/wowchemy v0.0.0-20210604173804-c0d8f2a41a8e // indirect
github.com/wowchemy/wowchemy-hugo-modules/wowchemy-cms v0.0.0-20210425191248-0afcc81296de // indirect github.com/wowchemy/wowchemy-hugo-modules/wowchemy-cms v0.0.0-20210425191248-0afcc81296de // indirect
) )

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go.sum

@ -42,5 +42,7 @@ github.com/wowchemy/wowchemy-hugo-modules/wowchemy v0.0.0-20210526223849-81ba175
github.com/wowchemy/wowchemy-hugo-modules/wowchemy v0.0.0-20210526223849-81ba17522966/go.mod h1:H22qfH9qj3FWwsk7+bAZpmT24yRGNQURah2/IRwjbn8= github.com/wowchemy/wowchemy-hugo-modules/wowchemy v0.0.0-20210526223849-81ba17522966/go.mod h1:H22qfH9qj3FWwsk7+bAZpmT24yRGNQURah2/IRwjbn8=
github.com/wowchemy/wowchemy-hugo-modules/wowchemy v0.0.0-20210531181349-70cef473aec5 h1:Ew4ZlIU/Yn2oh4RLlLzaGXFXpLOOPZRRy2Qa7LroRs8= github.com/wowchemy/wowchemy-hugo-modules/wowchemy v0.0.0-20210531181349-70cef473aec5 h1:Ew4ZlIU/Yn2oh4RLlLzaGXFXpLOOPZRRy2Qa7LroRs8=
github.com/wowchemy/wowchemy-hugo-modules/wowchemy v0.0.0-20210531181349-70cef473aec5/go.mod h1:H22qfH9qj3FWwsk7+bAZpmT24yRGNQURah2/IRwjbn8= github.com/wowchemy/wowchemy-hugo-modules/wowchemy v0.0.0-20210531181349-70cef473aec5/go.mod h1:H22qfH9qj3FWwsk7+bAZpmT24yRGNQURah2/IRwjbn8=
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=
github.com/wowchemy/wowchemy-hugo-modules/wowchemy-cms v0.0.0-20210425191248-0afcc81296de h1:J7MkieFVezVdQHtAvCOvAAaUv83oVMRqWzt7qkkUlPw= github.com/wowchemy/wowchemy-hugo-modules/wowchemy-cms v0.0.0-20210425191248-0afcc81296de h1:J7MkieFVezVdQHtAvCOvAAaUv83oVMRqWzt7qkkUlPw=
github.com/wowchemy/wowchemy-hugo-modules/wowchemy-cms v0.0.0-20210425191248-0afcc81296de/go.mod h1:AKpYbqUVlj0VYsc7Jsxe1o8Ko2yV31A5ZPdfpACcXJw= github.com/wowchemy/wowchemy-hugo-modules/wowchemy-cms v0.0.0-20210425191248-0afcc81296de/go.mod h1:AKpYbqUVlj0VYsc7Jsxe1o8Ko2yV31A5ZPdfpACcXJw=