M5/M24 NAVIGATION EXERCISES TWO                   NAME:

Use chart AUS 197 ..............Use Deviation Card Two...............View print Pdf version

 

EXERCISE NO. 1                     CHART SYMBOLS

1   Draw Chart symbols for the following:-

(a)   Steep Coastline                             (b) Disused submarine pipeline

(c)   A rock which dries to 1.6 metres  (d)  An easterly current of 2 knots

(e)   Sand dunes                                    (f)   Triangulation point

(g)   South cardinal buoy                      (h) Dangerous wreck


 (i)    Direction of buoyage                   (j)    A flood tide of 1.5 knots

 (k)    Eddies, tide rips and overfalls   (l)    A submarine power cable

(m)   A rock awash at chart datum     (n)   A isolated danger beacon

 

2   Draw chart symbols for the following

(a)   Shore breakers                                     (b)    Designated anchorage B

(c)   Prohibited anchorage                         (d)   Cliffy coast

(e)  An oil pipeline                            (f)  An airfield

(g)   A quarantine anchorage            (h)    Starboard special purpose buoy

(i)   Hillocks transponder beacon      (j)   X band radar (racon), morse R

(k)   Underwater rock with                       (l) Reef which covers/uncovers less than 2 metres of water over it.

 

3   Explain the following

(a)   Sh                                                     (b)   MHWS

____________________________________________________          

____________________________________________________          

____________________________________________________          


(c)    Wk                                                            (d)  Q(3)10s20m6M

____________________________________________________          

____________________________________________________          

____________________________________________________          

 (e)   (Oc)                                                           (f)   PA

____________________________________________________          

____________________________________________________          

____________________________________________________          

____________________________________________________          

(g)   WRG                                                           (h)   Dr

____________________________________________________          

____________________________________________________          

____________________________________________________          

(i)   IQ                                                                    (j) Oc(2)6s10M

____________________________________________________          

____________________________________________________          

(k)   Iso.Bu.10s                                                   (l)   Rep

____________________________________________________          

____________________________________________________          


(m)   LAT                                                             (n)   Pk

____________________________________________________          

____________________________________________________          

 (o)   fS                                                                  (p) soM

____________________________________________________          

____________________________________________________          

 (q)   bkSh                                                            (r)  Wd

____________________________________________________          

____________________________________________________          

 

4   What does AUS 197 in the upper right box marked on the chart signify?

____________________________________________________          

____________________________________________________          

 

5    How can you find out whether a chart has been corrected up to date?

____________________________________________________          

____________________________________________________          

 

How might soundings from an older survey be recognised on a chart?

____________________________________________________          

____________________________________________________          


7   What are the problems associated with using a gently sloping coastline when observing ranges and bearings?

____________________________________________________          

____________________________________________________          

____________________________________________________          

 

8   Define Latitude and Longitude

____________________________________________________          

____________________________________________________          

____________________________________________________          

 

9   Name 2 ways of giving your position on the earth’s surface.

____________________________________________________          

____________________________________________________          

____________________________________________________          

 

10   How are bearings and courses depicted on a Mercator Chart?

____________________________________________________          

____________________________________________________          

____________________________________________________          

 

11    How do you measure distance on a Mercator Chart?

____________________________________________________          

____________________________________________________          


12    What are contained in the Admiralty Notices to Mariners?

____________________________________________________          

____________________________________________________          

____________________________________________________          

 

13    Describe what is usually included under the Title or Legend of a Chart?

____________________________________________________          

____________________________________________________          

 

14   What should you check when using a coastal chart?

____________________________________________________          

____________________________________________________          

 

15   How should you keep a ship’s log and what entries for navigation should be entered?

____________________________________________________          

____________________________________________________          

 

17   When navigating between Islands, what should you watch out for?

____________________________________________________          

____________________________________________________          


EXERCISE NO. 2                   COMPASS ERROR

Use the deviation card provided at the end of this Section.

1   From the Compass Rose you read:

Mag. Var. 12°35E (1994), Increasing about 1’ annually.

What is the variation for 2008?

 

T

V

M

D

C

Error

           
           

True Course 280°, Variation 11°E.

What is the Compass Course?

T

V

M

D

C

Error

           
           

Compass Course is 150°, Variation 9°E.

What is the True Course?

T

V

M

D

C

Error

           
           

4  Steering 030°(C), Box Head bears 357°(C)

Variation 9°E. What is the True Bearing of Box Head?

T

V

M

D

C

Error

           
           

Steering 260°(C), North Head bears 032° Relative.

What is the True Bearing of North Head?  Variation 10°E.

T

V

M

D

C

Error

           
           

On the chart you read:  “Leading Lights 294°00’”

You enter port with these leads in line and right ahead, steering 311°(C)

Variation is 13°E.,    What is the Deviation?

T

V

M

D

C

Error

           
           

From a compass rose you read:

Mag.Var. 7°45’E (1972), Increasing about 4’ annually.

What variation would you use today?

T

V

M

D

C

Error

           
           

8 True course is 172°, variation 12°W.

What is the compass course?

T

V

M

D

C

Error

           
           

Compass course is 265°, variation 9°E.

What is the true course?

T

V

M

D

C

Error

           
           

10  When steering 070°(C), Macquarie Light is bearing 270°(C).

Variation is 11°E.

What is the true bearing of Macquarie Light?

T

V

M

D

C

Error

           
           

11 You are steering 290°(C) with Hornby light abeam to port.

Variation is 11°E.

What is the true bearing Hornby light?

T

V

M

D

C

Error

           
           

12 On a chart you read “Lights in Line 074°“.

By your compass the bearing of the lights when they are in transit is 067°.  Variation is 12°E.  What is the deviation?

T

V

M

D

C

Error

           
           

EXERCISE NO. 3                   TIDE                     

1. What are the times and heights of high and low waters at Sydney on

November 22nd 2008?

_______________________________________________________________

_______________________________________________________________

_______________________________________________________________

2. What are the times and heights of afternoon high and low water at Gosford on

June 3rd 2008?

_______________________________________________________________

_______________________________________________________________

_______________________________________________________________

3.   What are the times and heights of high waters at Brooklyn on

September 12th 2008?

_______________________________________________________________

_______________________________________________________________

_______________________________________________________________

4.   What is the earliest time and height of high water at Newcastle on

April 3rd 2008?

_______________________________________________________________

_______________________________________________________________


Secondary Ports.     (Use the secondary ports form)

5    You require to find the times and heights of high and low water at Brisbane Island for the 10th July 2008.

_______________________________________________________________            

_______________________________________________________________            

_______________________________________________________________            

6    You require to find the times and heights of high and low water at Hobart for 21st January 2008.

_______________________________________________________________            

_______________________________________________________________            

_______________________________________________________________            

7.    You require to find the times and heights of high and low water at Adele Island for the morning of the 10th March 2008

_______________________________________________________________            

_______________________________________________________________            

8    You require an under keel clearance of 0.5 metre and your draught is 2.25 metres.  What height of tide is required to safely clear a charted sand bar which dries 1.2 metres.

_______________________________________________________________            

_______________________________________________________________            

_______________________________________________________________          


9    You require an underwater clearance of 0.7 metres.  The tidal height is 3.2 metres.  What is the maximum draft you may have to clear a bar which dries to 1.1 metres.

_______________________________________________________________            

_______________________________________________________________            

_______________________________________________________________            

_______________________________________________________________            

10    The tidal height is 4.8 metres and your draught is 2.1 metres.  If you require a minimum under water clearance of 0.8 metre, what is the maximum drying height you can safely steam across?

_______________________________________________________________            

_______________________________________________________________            

_______________________________________________________________            

_______________________________________________________________            


EXERCISE NO. 4                  ELECTRONIC AIDS

1  Why are Radar ranges preferred to Radar bearings?

_______________________________________________________________

_______________________________________________________________

_______________________________________________________________

_______________________________________________________________

2  How would you recognise a Racon on a Radar Screen?

_______________________________________________________________

_______________________________________________________________

_______________________________________________________________

_______________________________________________________________

3  What effect can the tide have on different types of coast line in relation to taking ranges from the RADAR?

_______________________________________________________________

_______________________________________________________________

_______________________________________________________________

_______________________________________________________________

4  What should be taken into account when comparing chart soundings with those shown on the echo sounder?

_______________________________________________________________

_______________________________________________________________


5   Is a D.O.P. value 8, a good or bad satellite arrangement?

_______________________________________________________________

_______________________________________________________________

_______________________________________________________________

_______________________________________________________________

6   Describe the following errors associated with the G.P.S.

a.  Dilution of Precision

_______________________________________________________________

b.  Environmental Errors

_______________________________________________________________

c.  Spheroidal Errors

_______________________________________________________________


8   Where can corrections to Satellite-Derived Positions be found?

_______________________________________________________________

_______________________________________________________________

_______________________________________________________________

9   Explain 5 capabilities plotters can be used for in navigation.

_______________________________________________________________

_______________________________________________________________

_______________________________________________________________

10   What errors should you be aware of when using a plotter?

_______________________________________________________________

_______________________________________________________________

_______________________________________________________________

11   What is Waypoint Navigation?

_______________________________________________________________

_______________________________________________________________

_______________________________________________________________

12  When working with electronic aids to navigation, it is suggested a written log book be kept.

Design a log book sheet to cover the aids in a present / or last vessel.

_______________________________________________________________

_______________________________________________________________

_______________________________________________________________


EXERCISE NO. 4               PASSAGE PLANNING   CHART AUS197

Using the passage planner provided, compile the necessary pilotage information complete the chart work to safely navigate from Grotto Point (Port Jackson) to Patonga (Hawkesbury River) on 04/03/08. This plan may be used with Motorboat Simulator and the Australian Scenery Package, Sydney Coastal.


YOUR VESSEL
Choose one of the vessels described below for your plan:

VESSEL ONE

‘Hercules’
Single 8/71 GM 300 Kw’s each
Cruise speed 9 knots
Max. Tow speed 8 knots
Fuel Consumption 50 ltrs /hr at Cruise
Max. speed 10 knots
Draft 2.1 meters
Lowrance GPS, Furuno radar, steering compass, hand bearing compass, sextant
MF/HF, VHF and 27Mhz radios.

VESSEL TWO

‘Rescue Sim’
Twin Yanmars producing 250 Kw’s each
Cruise speed 20 knots
Top speed 26 knots
Fuel Consumption 19 ltrs /hr at Cruise
Draft 1.0 meters
Lowrance GPS, Furuno radar, steering compass, hand bearing compass, sextant
MF/HF, VHF and 27Mhz radios.

PILOTAGE INFORMATION
Conditions on 04/03/08 are:
Tidal predictions
Current 165? 1.5 kts
Weather SE 15 -18kts, 1 mtr seas, 1 mtr S swell, fair, barometer steady.
Deviation card

CONTINGENCY PLANNING
Include contingencies for:
Identifying coastal features of use to confirm the accuracy of your deviation card.
A safe distance off charted dangers by VSA.
A clearance bearing.
Preparation for a doubling of the angle off the bow.
A running fix from an isolated coastal feature.
A safe haven is the case of deteriorating weather conditions.

DEVIATION CARD 2 COASTAL NAVIGATION

Magnetic Heading ......Deviation ........Ships Head By Compass
356° ......................................4°W...........000°
015°...................................... 5°W...........020°


034°....................................... 6°W..........040°
056° .......................................4°W..........060°

078° ........................................2°W.........080°
099°........................................ 1°W.........100°


121° ........................................1°E..........120°
143°......................................... 3°E.........140°

164°........................................ 4°E..........160°
186°........................................ 6°E..........180°

208° ........................................8°E...........200°
230° .......................................10°E..........220°
248° ........................................8°E...........240°

266°......................................... 6°E..........260°
283° .........................................3°E..........280°

301°..........................................1°E..........300°
319°..........................................1°W.........
340°
356°...........................................4°W........360°

Study example only - Not for navigation

Contains edited material courtesy of A.N.T.A publication’s extracted by Ranger Hope © 2008