*Navigation

*Navigation

*NavigationMoon Zn 205 Dist 1.8nmSun Zn 127 Dist 2.0nmSunday 5 May 1100 CDTSun LOPMoon LOPSun/Moon Fix78NWS Forecast 40% chance of rain Mostly cloudyHigh near 52 East wind 3 to 7 mphSun MT (1305) Dist 1.6nm

*Chapter 9

Practice Cruise HomeworkNavigation

Using VPP2, start planning the cruise from Straits of Juan de Fuca, (L 48 24.0 N, Lo 124 45.0 W) to Honolulu, HI. Create a new passage in VPP2 and enter your departure and destination waypoints*Practice Cruise

*Practice Cruise

Before you can investigate various optimized courses in VPP2, you need to create a Vessel Profile for Ocean Passage.

Print copy and file in your Navigators Notebook. *Practice Cruise

*Practice Cruise

Practice Cruise

Run several iterations of VPP2s Optimization Routine for the month of June.Select one of your June optimized routes and edit the waypoints of your selected route to match the waypoints in the table on next slide.

Print the Passage Summary Report for the June optimized routes, and file it in your Navigators notebook.*Practice Cruise

*Practice Cruise

*Practice Cruise

*Practice Cruise

Waypoint #Latitude Longitude1N48 24.00 W124 45.002N44 44.01 W128 07.003N40 54.83 W130 08.274N37 51.93 W132 14.775N36 29.30 W135 04.016N34 47.49 W138 18.467N32 54.82 W140 27.228N30 48.05 W142 33.479N28 54.01 W144 46.5510N26 42.94 W147 10.4211N24 02.52W152 41.8512N21 18.00 W157 52.00

*Practice Cruise

*Practice Cruise

Generate a few more reports on your finalized route before exporting these waypoints to Capn.

Print the Weather Conditions Report and the Vessel Performance Report for Leg 1 of this voyage, and file them in your Navigators notebook.*Practice Cruise

Export route.

*Practice Cruise

*Practice CruiseStraits-Honolulu

Import route.

*Practice Cruise

*Practice Cruise

*Practice Cruise

Practice Cruise*

*Practice Cruise

You plan to use Capns Trip Log feature with the GPS connected for an electronic log of the voyage.

Run the simulation for five minutes at 100.0kn; at that point, slow the ship down to 5.0-10.0kn and change course to 270T (to simulate reaching a waypoint and changing heading), and increase the speed back to 100.0kn. After an additional few minutes of running the simulation, click Stop Logging and print the resulting Trip Log for your Navigators notebook. *Practice Cruise

*Practice Cruise

Practice CruiseFirst_Log_Book.Txt

[Logging Started 15 Apr 2013, 09:07:45]

DR Plot 15 Apr 2013,09:07:45,48 24.008 N,124 44.979 W, 000.0,0.0DR Plot 15 Apr 2013,09:08:02,48 23.961 N,124 45.023 W, 212.0,100.0DR Plot 15 Apr 2013,10:08:45,48 22.548 N,124 46.353 W, 212.0,100.0DR Plot 15 Apr 2013,10:09:47,48 21.087 N,124 47.727 W, 212.0,100.0DR Plot 15 Apr 2013,10:10:47,48 19.674 N,124 49.055 W, 212.0,100.0DR Plot 15 Apr 2013,10:11:47,48 18.307 N,124 50.339 W, 212.0,100.0DR Plot 15 Apr 2013,10:11:50,48 18.213 N,124 50.428 W, 212.0,100.0

DR Plot 15 Apr 2013,10:12:27,48 17.582 N,124 51.030 W, 274.0,11.1DR Plot 15 Apr 2013,10:12:46,48 17.582 N,124 51.643 W, 270.0,100.0

DR Plot 15 Apr 2013,10:13:27,48 17.582 N,124 53.313 W, 270.0,100.0

Display your route to Honolulu in Capn on a chart so that the entire route can be viewed.

Print a copy of this route, and file in your Navigators notebook. *Practice Cruise

You plan to use celestial techniques frequently during this voyage.Your GPS position is L 47 29.6 N, Lo 125 36.4 W and your DR position is L 47 32.4 N, Lo 125 37.0 W. Winds are northwest at five knots and the knotmeter log reads 0062.3. At WT 14-00-16, you observe the moon UL at a sextant reading of 1411.9. At WT 14-01-12 you observe the sun LL with an hs of 59 00.1. Reduce both bodies using the NASR method and plot the resulting 2-body fix on a CLS plotting sheet.*Practice Cruise

SErr 3.5

DECK LOG Vessel: Ocean Passage_ Navigator: Nav E Student From: Straits of Juan de Fuca To: Honolulu, HI Date: 25 Jun 20XXPage: ___1____

All plotting for the remainder of this cruise is to be done on the Chart N.O. 974

Prepare a blank offshore plotting sheet, Chart 974, to maintain your DR plot starting tomorrow morning.

Arrange the plotting sheet for north latitude, and label the meridian on the left 130 W at the top of the sheet.*Practice Cruise

Var 17 EZD +9 ZD +8Plot the 17 E isogonic line from the position: L 4400.0N, Lo 12913.0W, bearing 254 - 074. Plot time zone boundaries on the plotting sheet, as appropriate.

Var 16 EPlot the 16E isogonic line from: L 4135.5N, Lo 12600.0W to L 4100.0N, Lo 12900.0W.41 N

ZD+9 ZD+81017. You arrive at WP2 and change course to your Leg 2 heading. Knotmeter log reads 0251.7. Your DR position is L 4455.3N, Lo 12810.1W. Winds are still out of the northwest but have increased to about 10 kn, seas remain at 4 ft.1017WP2 1017CMG 212 SMG 9.2

ZD+9 ZD+8You determine the set and drift of Leg 1 of this voyage and find it is very close to the information provided in the VPP2 reports. Since the current information in VPP2 was quite accurate for Leg 1, you plan to use the VPP2 forecast for Leg 2. The predicted set and drift of 074 at 0.3kn will result in a drift angle of approximately one degree, making the course to steer 202T. Restart your DR plot at this time from WP2.1017WP2 1017CMG 212 SMG 9.2C 202 S 10.3

ZD+9 ZD+8While you were computing set and drift, a crew member determined that meridian transit will occur at 1135 at which time your DR position will be L4431.6N, Lo 12814.0W1017WP2 1017CMG 212 SMG 9.21135C 202 S 10.3

ZD+9 ZD+811-35-11. You observe the suns upper limb at an hs of 69 04.2. Knotmeter log reads 0265.1. Using a Meridian Transit Form, reduce this sight.1017WP2 1017CMG 212 SMG 9.21135C 202 S 10.3

*St Paul

ZD+9 ZD+81200. GPS position is L 4427.8N, Lo 12815.9W. Knotmeter log reads 0269.4. Winds are NW at 6 knots, seas are four feet. Report to the captain.1017WP2 1017CMG 212 SMG 9.2C 202 S 10.311351200 GPS

1645. GPS position is L 4343.2N, Lo 12840.1W. You prepare to take another sun sight to establish a running fix with the noon sight. What is your 1645 DR position?? 11351200 GPS1645 GPS1645D = 00321.5 00251.7 = 69.8

At 16-45-22, the hs of the suns upper limb is 2527.0. The knotmeter log reads 0318.3. Reduce this sight using the Law of Cosines method.Determine the running fix with the 1135 MT sight you reduced earlier.

11351200 GPS1645 GPS1645

Ques. 9c RFix

RFix is L 4343.6N, Lo 12841.9W.? 11351200 GPS1645 GPS16451645 RFix

3030128 W129 WPOSITION PLOTTING SHEET44 N130 W1800. GPS position is L 4331.3N, Lo 12846.6W; the skies are clear with a northwest wind at six knots. Knotmeter log reads 0331.2.Develop a first estimate of the ZT of Civil Twilight. Use the SMG of 10.1kn and a CMG of 20143 N1645 GPS16451645 RFix1800 GPS

3030128 W129 WPOSITION PLOTTING SHEET44 N130 WFrom NA, 26 Jun, for Tab Lat = 45N, LMT of CT is 2028. (2hr28min)Extend intended track. D = 10.1 kn X 148 min/60 = 24.9nmMeasure 24.9 nm from current position; 43 N1645 GPS16451645 RFix1800 GPSL 4308.1'N, Lo 12859.0'W x

3030128 W129 WPOSITION PLOTTING SHEET44 N130 W1.Tab LLMT CT 45N2028 40N2006 5 int. 22 min int.2. L 4308.1 N - 40 N = 308.1 = 3.1353. (3.135 / 5 int.) x 22 min int. = 13.79 min, rounded to 14 min.

43 N1645 GPS16451645 RFix1800 GPSL 4308.1'N, Lo 12859.0'W x4. LMT CT L 40N 2006 (from NA) Corrn to L4308.1N +14 min LMT CT, L4308.1N 2020 5. Find ZT: correct LMT for DLo. ZM 135WDLo=Lo-ZM = 12859.0 W - 135W = 6 1.0 E = 6.017 E, round to 6.0E6.0 x 4min/degree = 24 min.LMT CT 2020 (from step 4, above)DLo (E) -24 minZT CT1956

3030128 W129 WPOSITION PLOTTING SHEET44 N130 WUsing Celestial Tools, plan a 3-body fix for this date and time (Note: use 2004 for the year).

Print a copy of the Celestial Tools 'List Visible Bodies' screen, and file it in your Navigator's notebook.

43 N1645 GPS16451645 RFix1800 GPSx

Practice Cruise

3030128 W129 WPOSITION PLOTTING SHEET44 N130 WYou take the following sights:WTBody hsLog194511 Dubhe5444.10349.2195012 Vega4527.40350.1195508 Spica3255.50350.9Reduce these sights by the Law of Cosines method, and plot them on a CLS sheet to determine the 1955 fix position.43 N1645 GPS16451645 RFix1800 GPSx

3030128 W129 WPOSITION PLOTTING SHEET44 N130 WWhat is your 1955 DR position? What is the 1955 fix position?43 N1645 GPS16451645 RFix1800 GPS19551955 Fix x

DECK LOG Vessel: Ocean Passage_ Navigator: Nav E Student From: Straits of Juan de Fuca To: Honolulu, HI Date: 26 Jun 20XXPage: ___2____

3030128 W129 WPOSITION PLOTTING SHEET44 N130 W0015. The crew member on watch wakes you up. The captain received a call Bill, the other member of the crew, notifying him of an emergency at home. Its important that Bill gets to where he can fly home as quickly as possible. They reviewed charts to find the closest port to divert to that has airline service, and determined Crescent City, CA would be the best choice. The captain would like you to re-set the course to Crescent City.43 N1645 GPS16451645 RFix1800 GPS19551955 Fix x

3030128 W129 WPOSITION PLOTTING SHEET44 N130 WCreate a new passage in the month of June, with your current position as WP1 and select Crescent City from Locations as WP2 for this route.

You review several VPP2 reports for this route, and print the Weather Conditions report for your Navigators notebook.43 N1645 GPS16451645 RFix1800 GPS19551955 Fix x

3030128 W129 WPOSITION PLOTTING SHEET43 N130 W0030. GPS currently indicates L 42 30.2N, Lo 129 19.2W; knotmeter log reads 0398.2. The DR position at 0030 is L 4228.2N, Lo 12922.8W.1955 Fix 19550030 GPS0030

3030128 W129 WPOSITION PLOTTING SHEET43 N130 WYou re-start your DR course from the 0030 GPS position using a 1 port drift angle correction, anticipating the current predicted by VPP2. Due to this current, you calculate S=10.3 kn.1955 19550030 GPS0030C 100 S 10.3

DECK LOG Vessel: Ocean Passage_ Navigator: Nav E Student From: Straits of Juan de Fuca To: Honolulu, HI Date: 27 Jun 20XXPage: ___3____

3030126 W127 WPOSITION PLOTTING SHEET42 N128 W0800. You come back on watch. GPS position is L 4215.0N, Lo 127 35.6W.You decide to move the destination waypoint and insert additional waypoints in this Capn route. Insert a new waypoint, WP2 at L 4145.5N, Lo 12415.2W, WP3 at L 4143.5N, Lo 12412.5W, Move the destination waypoint to L 4144.2N, Lo 12411.3W. Label this WP4. Print a copy of the waypoint information and place it in your Navigators notebook.

08000800 GPSC 100 S 10.3ZD+9 ZD+8CMG 101 SMG 10.4

Practice Cruise

3030126 W127 WPOSITION PLOTTING SHEET42 N128 WCreate a circular alarm zone centered on Round Rock, east of Leg 3, with a 0.1 nmdiameter. Create an Alarm Zone to alarm if you stray about 300 yards to port on Leg 2 and Leg 3 of the route, starting northwest of Castle Rock and continuing to the destination point.

Print a copy of the Alarm Zone and place it in your Navigators notebook.

08000800 GPSC 100 S 10.3ZD+9 ZD+8CMG 101 SMG 10.4

3030126 W127 WPOSITION PLOTTING SHEET42 N128 W0824, you cross the ZD+9 / ZD+8 time zone boundary.1000 (ZD +8). GPS position is L 4213.0N, Lo 12721.8W. 1200. GPS position is L 4209.0N, Lo 12654.3W. 08000800 GPS1200C 100 S 10.3ZD+9 ZD+80824 GPS ZD+9 0924 GPS ZD+81000 GPS1200 GPSCMG 101 SMG 10.4D = 00506.3 00475.4 = 30.9

3030128 W129 WPOSITION PLOTTING SHEET42 N130 WAs you maintain your DR plot you notice your course will run off the right side of the sheet very soon.Renumber the left meridian 126 W at the bottom of the plotting sheet and restart your course from the left side of the sheet. C 100 S 10.3CMG 101 SMG 10.4124 W125 W126 WVar 16 EWP2Crescent City128 W129 W130 W

3030128 W129 WPOSITION PLOTTING SHEET42 N130 WC 100 S 10.3CMG 101 SMG 10.4124 W125 W126 W2000. GPS position indicates L 4152.8N, Lo 12504.4W. Knotmeter log reads 0588.72018. GPS indicates L 41 52.2N, Lo 12500.4W. You notice an AIS target on the Capn screen 20002000 GPS2018 GPSVar 16 EWP2Crescent CityD = 00588.7 00506.3 = 82.4

3030128 W129 WPOSITION PLOTTING SHEET42 N130 WC 100 S 10.3CMG 101 SMG 10.4124 W125 W126 WVar 16 EYou click on the AIS target icon, and the following screen is displayed:20002000 GPS2018 GPSWP2Crescent CityAIS Target @2018 C 266M S 8.1

3030128 W129 WPOSITION PLOTTING SHEET42 N130 WC 100 S 10.3CMG 101 SMG 10.4124 W125 W126 WVar 16 E2207. GPS indicates L 4148.6N, Lo 12435.4W; knotmeter log reads 0610.5.2335. You arrive at WP2 southwest of Castle Rock; knotmeter log reads 0625.6. Since you are now in coastal waters, you end your offshore DR plot, and begin observing land features and navigation aids to guide the captain safely through the remaining near-shore legs20002000 GPS2018 GPSAIS Target @2018 C 266M S 8.1WP2Crescent City2207 GPS2335

DECK LOG Vessel: Ocean Passage_ Navigator: Nav E Student From: Straits of Juan de Fuca To: Honolulu, HI Date: 27 Jun 20XXPage: ___4____

*Practice Cruise

****************************************************Plotting for the Practice Cruise starts at WP2. Position plotted from coordinates in Waypoint List. - Capn provides a course of 201T that will be the CMG, since the GPS, integrated with Capn, will maintain that course for us. (Answer to Question 7.a) As we travel on the CMG ie, as GPS positions are provided the SMG of 10.1 can be calculated and noted on the CMG.

* - Info in bullet just before Question 7.b. tells us the predicted set and drift will give us a drift angle of approx 1 making course to steer 202T. Therefore, our DR course is 202T. Knotmeter log readings (used ONLY on the DR course), indicates boat speed thru the water is 10.3.Note: To minimize cumulative plotting errors, always use the longest span of time/distance possible.***A 1645 GPS position is provided, and the 1645 sun sight is reduced from this position (See SR for Q 9a, Sight #4). However, since this sun LOP is to be used with the sun MT earlier in the day, and we are on a moving vessel, the RFix position MUST be plotted from the DR (NOT GPS) position for 1645 (See corrected CLS for Q 9b, sent with Errata #1). - The DR position for 1645 is determined, using knotmeter log readings between WP2(= 251.7) and knotmeter log reading given for 1645 (= 321.5); The distance traveled on the DR course is 321.5 251.7 = 69.8 nm from WP2. So, the DR for 1645 is positioned on the DR track at 69.8 nm from WP2. - The 1645 RFix position is plotted and determined on the CLS sheet, and transferred to this small-scale chart. It is neither exactly on the DR track or the CMG.

*At 1955, the 3 stars are reduced (See SR forms for Question 10d-1, -2, &-3) and the celestial fix determined (See CLS sheet for Question 10e.). The GPS fix (provided with the last sight data) and the 1955 celestial fix are also plotted onto this 974 sheet.

Note (on the CLS for the RFix) that since the distance traveled between the sights for this 3-body fix is a mile or so, common practice when using a chart such as the CLS sheet (or smaller-scale chart) is to plot the fix without advancing LOPs. If the distance traveled between each sight had been greater, the LOPs would have needed to be advanced, and the advancing would need to be done from the respective DR positions, NOT the GPS positions provided in the exercise.NOTE: In the case where the sights were reduced from GPS positions, you cannot simply plot all intercepts from the later of the GPS positions. Instead, you must advance each LOP from its respective DR position, using the following procedure: 1. Plot each LOP according to its intercept and azimuth; 2. Plot the DR position corresponding to each GPS position; 3. Draw a perpendicular from the earlier DR position to its LOP; 4. Using the perpendicular as an intercept, re-plot the earlier LOP from the later DR position.An alternate procedure is to advance each LOP by DR course and distance to the time of the latest sight and then determine the fix position.***At 0030, the course change is made. DR must be plotted each time course is changed. Student is instructed to re-start the DR course, and provided the drift angle information to plot the DR course of 100T. Speed through the water (from knotmeter log) is still 10.3 kn

***The 0800 and 1200 position reports are plotted (and logged), as well as the time zone change.

The course now runs off the right hand margin of the chart, at 126W. Next slide shows the course restart on the lower left of the sheet, numbering the parallels of longitude, starting with 126W.*Both the DR course and the CMG are transferred, starting at the left, bottom of the sheet. The 2000 position report to the Captain is plotted (and logged).

*The 2018 GPS position is plotted (and logged), since picking up a target on your course is an unusual event. Target position can be located on the CMG (since you will run into the ship on the CMG) as shown.

*The 2207 GPS position is later plotted (and logged), as the point where you safely passed the vessel.The DR plot was terminated when we reached WP2 (of this diverted course into Crescent City), near Castle Rock, since you must now keep out a very careful watch to navigate into the harbor.

****