1. D-6 Chartwork Exercise

2. Objectives The student will: Apply the knowledge gained in Sections D-4 and D-5

3. The Cruise - Departure You are aboard a friend’s 7m power cruiser, leaving Boutcher Bay on the north coast of CPS Island. By taking bearings on Summers Light and the nearby VHF tower, you have established your exact position as L 49º13.7’N, Lo 123º37.9’W.

4. The Cruise - Destination An urgent radio message requires your friend to make a quick run to Seymour Landing on the south-east side of Bowen Island (L 49º20.5’N, Lo 123º21.2’W) and she asks you to act as navigator.

5. The Boat The boat has a reliable steering compass with zero deviation, a hand-held bearing compass, a depth finder and a knotmeter but no electronic navigational aids. You plan to travel at a speed of 12 knots. Use a magnetic variation of 20ºE for this cruise.

6. Pinpointing a Fixed Destination After studying the chart, you select Pt Cowan Lt (L 49º20.2’N, Lo 123º21.6’W) as your destination and carefully inspect the chart for hazards along the proposed route.

7. Question 1 What hazards if any, lie within 2 miles of the track?

8. Seymour Landing Boutcher Bay

9. Draw the Track Step One: Find the given latitude and longitude of the departure point on the chart and mark the point Step Two: Draw a line from there to the black dot of the magenta symbol of Pt. Cowan Light

10. Latitude: L 49º13.7’N Longitude: Lo 123º37.9’W Position 13’ 14’ 37’

11. Plotter Rose indicates a bearing of 059° C 059 S 12.0

12. 019 ½° E We will use a magnetic variation of 20° E for this cruise

13. Log Entries 1205FIX49°13.7’N123°37.9’W Depart for Point Cowan Lt.

14. Question 4 What is the course to steer by compass ? TVMDC 039 20E 0 059

15. C 059 S 12.0 Variation 20° East 039° Magnetic / 039 M

16. Question 5 What is the length of the track?

17. Side Scale 1’ latitude = 1nm

18. 12.4 nm Answer to Question 5 C 059 S 12.0 / 039 M

19. 1205FIX49°13.7’N123°37.9’W Depart for Point Cowan Lt. Log Entries 05920E0390 12.012.4M

20. Question 6 At a speed of 12.0 knots, what is the expected duration of the cruise? 60D = St 60 x 12.4 = t 12 5 x 12.4 = 62 minutes

21. Question 7 How far will the boat travel in 10 minutes D = 60 S x T 12.0 x 10 == 2 nm You will travel 2.0 nm in 10 minutes 60

22. Question 8 The boat travels one mile on a litre of fuel. There is no fuel supply at Seymour Landing and you plan to return to CPS Island. What is the minimum amount of fuel you should have on board? Minimum FUEL required is (1 mile / litre): 12.4 litres to Seymour Landing (1/3) 12.4 litres return ( 1/3) 12.4 litres reserve ( 1/3) 37.2 litres total (3 x 12.4)

23. Question 9 If the light at Pt Cowan is partly obscured and is not visible for more than one mile, what other aids to navigation and/or landmarks might you use? Look for aids that will give you a good FIX as you approach Pt Cowan.

24. Cape Roger Curtis Light Other navigation and/or landmarks Microwave towers C 059 S 12.0 / 039 M Port Atkinson Light Summers Light Microwave towers Cape Roger Curtis Light Port Atkinson Light Summers Light

25. Plotting on the Chart You depart the Boutcher Bay Fix at 1205. Mark the 1210 DR position on the course line and others at 10-minute intervals thereafter.

26. C 059 S 12.0 / 039 M Depart & DRs 1 2 1 0 1 2 0 5 1.0 Mile 1 2 2 0 2.0 Miles 1 2 3 0 1 2 4 0 1 2 5 0 1 3 0 0

27. Question 10 What is the ETA Pt Cowan Lt? From #6, cruise duration = 62 minutes ETA = 1205 + 62 (1 hour + 2 minutes) 1205 + 1hr + 2min = 1307 ETA = 1307

28. Date:Vessel:Navigator: TimeObsLatLongTVMDCSpeedDist.ETARemarks 1205FIX49°13.7’N123°37.9’W05920E0390 12.012.4M Depart for Point Cowan Lt. Log Entries 13071205 ETA Point Cowan Lt.

29. Question 11 At 1225, Summers Light bears 231ºM by hand-bearing compass. Are you on track, right of track or left of track? 25120E231 TVMDC

30. 251 1225 Right of Track / 231 M C 059 / 039 M S 12.0 1210 1220 1230 1205 251 ° 231° Magnetic Rotate Plotter Rose to 251 ° Variation 20° East 231° Magnetic Summers Light bears 231° Magnetic

31. Date:Vessel:Navigator: TimeObsLatLongTVMDCSpeedDist.ETARemarks 1205FIX49°13.7’N123°37.9’W05920E0390 12.012.4M Depart for Point Cowan Lt. Log Entries 1205 ETA Point Cowan Lt. 1225Brg25120E2310 Summers Lt.

32. Plotting and Labeling At 1253, Cape Roger Curtis Lt bears 304º M by hand- bearing compass and Pt Atkinson Lt bears 040º M by hand- bearing compass. Plot and label the 1253 LOPs and the 1253 FIX.

33. Step 1: Convert to TRUE 32420E304 060 20E040 TVMDC Cape Roger Curtis Lt Pt Atkinson Lt

34. 1240 1250 1300 324 / 304 M 324 ° 304° Magnetic Rotate Plotter Rose to 324 ° Variation 20° East 304° Magnetic Cape Roger Curtis Light bears 304° Magnetic

35. 1240 1250 1300 060 / 040 M 324 / 304 M 060 ° 040° Magnetic Rotate Plotter Rose to 060 ° Variation 20° East 040° Magnetic Point Atkinson Light bears 040° Magnetic

36. Date:Vessel:Navigator: TimeObsLatLongTVMDCSpeedDist.ETARemarks 1205FIX49°13.7’N123°37.9’W05920E0390 12.012.4MDepart for Point Cowan Lt. 12051307ETA Point Cowan Lt. 1225Brg25120E2310 Summers Lt. 1253Brg132420E3040 Cape Roger Curtis Lt. 1253Brg206020E0400 Pt. Atkinson Lt 1253FIX49°17.3’N123°22.5’wDistance travelled since 1205 10.6M, SMG 13.3 kn 125301220E3520 12.02.9MChange course 12531306ETA Point Cowan Lt. 1306FIXClose aboard Point Cowan Lt. 1315Arrive Seymour Landing Log Entries 1225Brg25120E2310 Summers Lt. 1253Brg132420E3040 Cape Roger Curtis Lt. 1253Brg206020E0400 Pt. Atkinson Lt

37. 1240 1250 1300 060 1253 / 040 M 324 / 304 M 1253 FIX L49°17.3’N Lo123°22.5’W

38. Speed Made Good C 059 S 12.0 / 039 M 1210 1205 1220 1230 1240 1250 1300 324 / 304 M 10.6 nm CMG 070 / 050 M 070 ° SMG 13.3 S = 60 x D T 60 x 10.6 == 13.25 SMG between 1205 & 1253 is 13.3 knots 48.0 13.3 050° Magnetic 1253

39. Date:Vessel:Navigator: TimeObsLatLongTVMDCSpeedDist.ETARemarks 1205FIX49°13.7’N123°37.9’W05920E0390 12.012.4MDepart for Point Cowan Lt. 12051307ETA Point Cowan Lt. 1225Brg25120E2310 Summers Lt. 1253Brg132420E3040 Cape Roger Curtis Lt. 1253Brg206020E0400 Pt. Atkinson Lt 1253FIX49°17.3’N123°22.5’wDistance travelled since 1205 10.6M, SMG 13.3 kn 125301220E3520 12.02.9MChange course 12531306ETA Point Cowan Lt. 1306FIXClose aboard Point Cowan Lt. 1315Arrive Seymour Landing Log Entries 1225Brg25120E2310 Summers Lt. 1253Brg132420E3040 Cape Roger Curtis Lt. 1253Brg206020E0400 Pt. Atkinson Lt 1253FIX49°17.3’N123°22.5’w Distance travelled since 1205 10.6M, SMG 13.3 kn

40. Question 15 From the 1253 fix, what is the true course to reach Point Cowan Light?

41. 1240 1250 1300 060 1253 / 040 M 324 / 304 M 012 ° 352° Magnetic C 012 / 352 M S 12 CMG 070 / 050 M SMG 13.3 New Course

42. Question 16 What is the corresponding compass course to steer? 01220E3520 TVMDC

43. Question 17 At 1253, how far are you from Point Cowan Light? 2.9 nm 2.9 nautical miles

44. Date:Vessel:Navigator: TimeObsLatLongTVMDCSpeedDist.ETARemarks 1205FIX49°13.7’N123°37.9’W05920E0390 12.012.4MDepart for Point Cowan Lt. 12051307ETA Point Cowan Lt. 1225Brg25120E2310 Summers Lt. 1253Brg132420E3040 Cape Roger Curtis Lt. 1253Brg206020E0400 Pt. Atkinson Lt 1253FIX49°17.3’N123°22.5’wDistance travelled since 1205 10.6M, SMG 13.3 kn 125301220E3520 12.02.9MChange course 12531306ETA Point Cowan Lt. 1306FIXClose aboard Point Cowan Lt. 1315Arrive Seymour Landing Log Entries 1225Brg25120E2310 Summers Lt. 1253Brg132420E3040 Cape Roger Curtis Lt. 1253Brg206020E0400 Pt. Atkinson Lt 1253FIX49°17.3’N123°22.5’w Distance travelled since 1205 10.6M, SMG 13.3 kn 125301220E3520 12.02.9MChange course

45. Question 18 & 19 Assuming the same Speed Made Good, how long will it take you to reach Pt Cowan Light? What is the new ETA at Pt Cowan Light? 1253 + 13 minutes = 1306 t = 60 x D S 60 x 2.9 = = 13.1 min 13.3 13 minutes ETA

46. Date:Vessel:Navigator: TimeObsLatLongTVMDCSpeedDist.ETARemarks 1205FIX49°13.7’N123°37.9’W05920E0390 12.012.4MDepart for Point Cowan Lt. 12051307ETA Point Cowan Lt. 1225Brg25120E2310 Summers Lt. 1253Brg132420E3040 Cape Roger Curtis Lt. 1253Brg206020E0400 Pt. Atkinson Lt 1253FIX49°17.3’N123°22.5’wDistance travelled since 1205 10.6M, SMG 13.3 kn 125301220E3520 12.02.9MChange course 12531306ETA Point Cowan Lt. 1306FIXClose aboard Point Cowan Lt. 1315Arrive Seymour Landing Log Entries 1225Brg25120E2310 Summers Lt. 1253Brg132420E3040 Cape Roger Curtis Lt. 1253Brg206020E0400 Pt. Atkinson Lt 1253FIX49°17.3’N123°22.5’w Distance travelled since 1205 10.6M, SMG 13.3 kn 125301220E3520 12.02.9MChange course 12531306 ETA Point Cowan Lt.

47. Arrival You pass Point Cowan Light close aboard exactly at the time calculated.

48. Date:Vessel:Navigator: TimeObsLatLongTVMDCSpeedDist.ETARemarks 1205FIX49°13.7’N123°37.9’W05920E0390 12.012.4MDepart for Point Cowan Lt. 12051307ETA Point Cowan Lt. 1225Brg25120E2310 Summers Lt. 1253Brg132420E3040 Cape Roger Curtis Lt. 1253Brg206020E0400 Pt. Atkinson Lt 1253FIX49°17.3’N123°22.5’wDistance travelled since 1205 10.6M, SMG 13.3 kn 125301220E3520 12.02.9MChange course 12531306ETA Point Cowan Lt. 1306FIXClose aboard Point Cowan Lt. 1315Arrive Seymour Landing Log Entries 1225Brg25120E2310 Summers Lt. 1253Brg132420E3040 Cape Roger Curtis Lt. 1253Brg206020E0400 Pt. Atkinson Lt 1253FIX49°17.3’N123°22.5’w Distance travelled since 1205 10.6M, SMG 13.3 kn 125301220E3520 12.02.9MChange course 12531306 ETA Point Cowan Lt. 1306FIX Close aboard Point Cowan Lt.

49. Docked At 1315, you dock at Seymour Landing.

50. Date:Vessel:Navigator: TimeObsLatLongTVMDCSpeedDist.ETARemarks 1205FIX49°13.7’N123°37.9’W05920E0390 12.012.4MDepart for Point Cowan Lt. 12051307ETA Point Cowan Lt. 1225Brg25120E2310 Summers Lt. 1253Brg132420E3040 Cape Roger Curtis Lt. 1253Brg206020E0400 Pt. Atkinson Lt 1253FIX49°17.3’N123°22.5’wDistance travelled since 1205 10.6M, SMG 13.3 kn 125301220E3520 12.02.9MChange course 12531306ETA Point Cowan Lt. 1306FIXClose aboard Point Cowan Lt. 1315Arrive Seymour Landing Log Entries 1225Brg25120E2310 Summers Lt. 1253Brg132420E3040 Cape Roger Curtis Lt. 1253Brg206020E0400 Pt. Atkinson Lt 1253FIX49°17.3’N123°22.5’w Distance travelled since 1205 10.6M, SMG 13.3 kn 125301220E3520 12.02.9MChange course 12531306 ETA Point Cowan Lt. 1306FIX Close aboard Point Cowan Lt. 1315 Arrive Seymour Landing

51. You made it – congratulations! Homework: Complete Cruise A Password is “abc” (minus quotes)