CHECK YOUR PROGRESS (Pdf view)       NAME:

NAVIGATION 2 AUS 811     Check your answers

 

Use chartlet Crowdy 811 & chartlet Port b provided.

A deviation card supplied at the end of this file.

 

Question 1

a          What is the distance, in nautical miles, between Mermaid reef and Perpendicular point?

            _____________________________________________________________

b          What is the charted depth nearest the position 31^o 48'.5S, 152^o 45' E?

            _____________________________________________________________

c          Describe the lighting characteristics of Tacking Point Lt.

            _____________________________________________________________

            _____________________________________________________________

d          What is the latitude and longitude of the highest point of Transit Hill ?

            _____________________________________________________________

 

 

Question 2 

a          What is the latitude and longitude of the entrance to the Hastings River?

            _____________________________________________________________

b          A vessel at a speed of 12 knots will travel how far in 2 hours and 45 minutes?

            _____________________________________________________________

c          East of Diamond Head there is a chart symbol,  CoS  What does it mean?

            _____________________________________________________________

d          How many nautical miles is equal to one minute of Latitude?

            _____________________________________________________________

Question 3

Complete the following compass error table.

 

 

Question 4

At 1400 Crowdy Head  Light bore 215.5 ⁰ M. At the same time Grants Head bore 257.5 ⁰ M. What is the Latitude and Longitude of the vessel?

____________________________________________________________

____________________________________________________________

Question 5

At 8.0 knots, how far will a vessel travel in 2 hours 15 minutes?

a.         11.0 n miles

b.         19.0 n miles

c.         18.0 n miles

d.         22.0 n miles

 

Question 6

Courses and bearings are plotted on charts as:

a.         magnetic.

b.         all of the choices

c.         compass

d.. .......true

 

 

Question 7

The variation at your locality is found from:

a.         the radar.

b.         the deviation card.

c.         the tide tables.

d.. .......the compass rose.

 

 

Question 8

Deviation of the compass is caused by:

a.         magnetic influences in the vessel.

b.         the earth's magnetic field.

c.         magnets in the compass.

d.. .......the moon.

 

 

Question 9

Your vessel has Mt. Cairncross (533) and Queens Head (32) in transit dead ahead. Your compass heading is 266^o  C. You suspect your deviation card is wrong, find:

a          The compass error on this heading.  

__________________________________________________________________

b          Calculate the deviation of the compass on this heading.   

__________________________________________________________________

c          Is the deviation different from the deviation card?   

__________________________________________________________________

d          If yes, explain why and what action would you take.   

__________________________________________________________________

__________________________________________________________________

__________________________________________________________________

Question 10

You fix your vessel’s position by radar at 1230

            Eastern edge of Point Plomer                               range 1.3 NM

            Green Islet                                                               range 3.4 NM

            Tacking Point Light                                               range 10.2 NM

What is the Latitude and Longitude of the 1230 position? What is the compass course to steer to a pass Tacking Point Light at a distance of 1 NM. If the vessels speed is 7 knots, at what time will Tacking Point Light and Transit Hill (118) be in transit?

 

Lat & Long:_________________________________________________

CCTS:_____________________________________________________ 

ETA:______________________________________________________

 

Question 11

List four sources of weather information.

1.__________________________________________________________________

2. __________________________________________________________________

3. __________________________________________________________________

4. __________________________________________________________________

Question 12

On a weather chart three and a half feathers on a wind arrow indicates a wind strength of:

a.     12.5  knots

b.     35   knots

c.     25    knots

d.     15    knots

 

Question 13

A barometer or barograph assists weather forecasting by indicating:

a.     the atmospheric pressure

b.     the rise and fall of atmospheric pressure

c.     the amount and rate of change in pressure

d.     all of the choices

 

Question 14

Lines on a weather map joining places of equal mean sea level pressure are called:

a.     fronts

b.     equidistants

c.     isobars

d.     ridges

 

Question 15

You should avoid “tapping the glass” of an aneroid barometer as this will damage it.

TRUE     FALSE

 

Question 16

A STRONG WINDS WARNING indicates average winds above:

a.    26 knots

b.     25 knots

c.    34 knots

d.     48 knots

 

Question 17

In the Southern Hemisphere wind travels clockwise around a low pressure system.

TRUE      FALSE

 

Question 18

Buys Ballot’s law states that if an observer (in the Southern Hemisphere) stands facing the wind the centre of a low pressure system will lie:

a.     the observers left

b.     to the observers right

c.      directly behind the observer

d.      four points to the observers right

 

Question 19

Forecast wind and wave heights from the Bureau Of Meteorology warn that they are averages only and may in fact be:

a.     20% lower  

b.      40% higher

c.       20% higher

d.       40% lower

 

Question 20

A land breeze is one that blows onto the land after nightfall.

TRUE      FALSE

 

 

Question 21

What type of tides are experienced with the first quarter of the moon?

a          Lunar tides

b          Spring tides

c          Neap tides

d          Diurnal tides

 

 

Question 22                                                                               

a        Chart Datum

b        Lowest Astronomical Tides

c        Mean Sea Level

d        Mean High Water Springs