chap3answers

 
Homework Questions – Chapter 3

 

Homework Questions – Chapter 3

  1. In plotting a pre-planed course, use the following to represent your intended path

    1. a dashed line without labels

    2. a solid line without labels.

    3. a dashed line with the course labeled.

    4. a solid line with the course labeled.


    Ref: WN – Chapter 5, pg 61,Plotting on a Chart

  2. To find a DR position and plot it on a chart you must:

    1. use visible aids to navigation

    2. calculate the time to run to next position

    3. use a range on the chart

    4. calculate the distance from a prior position.

    Ref:
    SG – Chapter 3, ¶ 7 Dead Reckoning

  3. – 8. Calculate the missing Functions:

3.

4.

5.

6.

7.

8.

Distance (D)

5.1 nm

46 nm

12.6 nm

10 nm

15 nm

12.9 nm

Time (T)

38 min

6hr 34 min

1 hr 7 min

27 min

1hr 30 min

1hr 45 min

Speed (S)

8.1 kn

7.0 kn

11.3 kn

22.0 kn

10 kn

7.4 kn

Ref: SG – Chapter 3, ¶ 20

  1. In order to convert a magnetic bearing to a true
    bearing you must apply variation based on the boat’s position

    1. True

    2. False


    Ref: WN – Chapter 5, pgs 63-64, Using  the Compass Rose

  2. The direction of a bearing is:

    1. determined by plotting on a chart.

    2. measured from the navigational aid to the boat.

    3. measured from the boat to the navigational aid.

    4. determined by the boat’s heading


    Ref: SG – Chapter 3 – Plotting Bearing

  3. A starboard beam bearing is a relative bearing at:

    1. 30º from the bow

    2. 60º from the bow.

    3. 90º from the bow.

    4. 180º from the bow.


    Ref: SG – Chapter 3, Fig 3-5b & c


  4. A relative bearing is measured from:

    1. compass north.

    2. magnetic north.

    3. the bow of the boat.

    4. true north


    Ref: SG – Chapter 3, ¶ 40, 41, Seaman’s Eye and Relative Bearing


  5. – 15. Calculate the missing functions:

    13.

    14.

    15.

    Magnetic Bearing (MB)

    080º

    300º

    250º

    Relative Bearing (RB)

    10º

    125º

    22º

    Magnetic Heading (MH)

    070º

    175º

    228º


    Ref: SG- Chapter 3, ¶ 42, Seaman’s Eye and Relative Bearing

  1. A navigation range consists of _________ navigational aids aligned to direct
    you along a path of water

    1. one

    2. two

    3. three

    4. four


    Ref: SG – Chapter 3, ¶ 51, Ranges