1. Piloting - Plotting a Course
Welcome to the
United States Power Squadrons'
Chart Smart Seminar
Piloting - Plotting a Course
(Section 5)

2. Section 5: Piloting - Plotting a Course
Class Agenda - cont'd
Section 5: Piloting - Plotting a Course
Navigation vs Piloting
Accuracy Standards
Plotting Tools
Hands-on Practice

3. You will need a chart, a compass and plotting tools
Definitions
Navigation
The science of directing the movements of a boat from one place to another in a safe and efficient manner.
Piloting
A part of navigation using landmarks, navigational aids, and soundings as primary tools.
You will need a chart, a compass and plotting tools

4. 

5. Why Rules for Chart Work?
Good habits will reduce errors
Mistakes are easier to find
Information is clear for future use
Other boaters can follow your work
To know you are in Safe Water

6. Accuracy Standards
Angular Measurement - Nearest Whole Degree º (with three digits)
Distance Nearest one-tenth of a mile nm
Speed Nearest one-tenth of a knot kn
Time Nearest whole minute - 43 m

7. How To Draw A Course Line Using The Course Plotter
RG "D"
C "1"
Bowditch Bay Chart

8. RG "D"
C "1"

9. DRAW THE COURSE LINE
USING THE QUIK
COURSE PLOTTER
AS A STRAIGHT EDGE

10. Place Center at Beginning of Course

11. Determine the Course 1 2 3 Read: 067 Plot the course
Once we have identified the starting and ending points, we need to draw a course line.
You can use the course plotter as a straightedge to do that.
Next, you will want to know the Course angle. You place the center of the course plotter over the starting point and align it with the grid lines on the chart.
Then, you read the course angle on the scale as shown. IN this case, the course will be 067 degrees. 1
Plot the course 2
Check it for safe passage 3
Measure the course direction (true)

12. Labeling A Course Line C 067 Course 067° true
Place the true course direction near the beginning of the course

13. C067

16. Class Exercise #4
On the Bowditch Bay practice chart, determine and label the reciprocal course in Exercise #3.
Update Variation to the current year.
Determine magnetic and compass courses.

17. Labeling A Course Line C 247 067 180 247 Course 247° True reciprocal
Place the true course direction near the beginning of the course

18. C247

19. The TVMDC Formula True Course T _247°_ Variation V _15°W_
Add
Add
East
West
Magnetic Course
M _262°_
Subtract
Subtract
West
East
Deviation
D _0°_
Compass Course
C _262°_
Deviation
is assumed to be 0
for demonstration only

20. Piloting - Plotting a Course
End of Section 5
Piloting - Plotting a Course