Navigation Flashcards Preview

Surface Warfare Specialist > Navigation > Flashcards

Flashcards in Navigation Deck (50):
1

What does GMT stand for?

Greenwhich Mean Time

2

What does DR stand for?

Dead Reckoning

3

What does DIW stand for?

Dead In Water

4

What is true bearing?

Any bearing in relation to true north given from 0 to 359 degrees

5

What is relative bearing?

Any bearing in relation to the ship given from 0 to 359 degrees

6

Where are the navigiaton lights operated from?

The Telltale Panel on the Bridge behind the helm.

7

What are the navigation lights and their color?

  1. Port Running Light- Red
  2. STBD Running Light- Gren
  3. FWD Masthead Light- White
  4. AFT Masthead Light- White
  5. Stern Light- White

8

Name some things used during a man overboard

  • Oscar Flag
  • Search Light
  • Life Ring
  • Smoke Float

9

What are the Pelorous Stands?

Stands used to house:

  • Gyro repeaters for true bearing
  • Fixed compass card for relative bearing

10

What is a Telescopic Alidade?

A tool that QM's use in conjunction with the pelorus to obtain bearing from visual navigation aids during transits through restricted waters

11

What is the job of the QMOQ?

  • Maintain navigation plot
  • Be he eyes, ear, and voice of the Navigator when he is not present

12

What is the job of the Conning Officer?

To verbally drive the ship by giving rudder orders to the helmsman and speed orders to the lee helmsman

13

What day shapes are flown for restricted maneuvering?

Ball-Diamond-Ball

14

What day shapes are flown for vessel aground?

Ball-Ball-Ball

15

What day shapes are flown for vessel not in command?

Ball-Ball

16

What day shapes are flown for vessel at anchor?

Ball

17

What day shape is flown for vessel constrained by draft?

Cylinder

18

What lihgts are operated on the mast during a man overboard?

Red on Red Flashing

19

What lights are operated on the mast during restricted maneuvering?

Red over White over Red

20

What light is operated on the mast during vessel at anchor?

Red

21

What lights are operated on the mast during vessel not under command?

Red over Red

22

What lights are operated on the mast during vessel aground?

Red over Red over Red

23

What are the flags flown during UNREP?

  1. Golf
  2. Romeo
  3. Bravo
  4. Papa

24

What is a Marine Sextant?

A tool used by QM's to obtain lines of position from celestial bodies

25

What is a Parallel Motion Protractor(PMP)?

A tools used by the QM's to quily plot the L.O.P. during navigation details

26

How is the radius of the drag circle calculated for a planned anchorage?

(scope of the chain let out) + (distance from the hawespipe to the center pelorus on the bridge) = Radius of Drag Circle

27

How is the radius of the swing circle calculated for a planned anchorage?

(scope of the chain let out) + (the length of the ship)

28

What shape is an electronic fix?

Triangle

29

What shape is a visual fix?

Circle

30

What is an emergency breakaway?

Ship seperates itself from alongside another ship during UNREP using max rudder and max propulsion

31

What type of breakway does our ship do after an unrep?

Accelerated standard breakaway

32

Why doesn't our ship execute emergency breakaways?

We would collide to the other ship due to our pivot point located at the 100 frame

33

What is "Messenger in Hand"?

A term passed to lower the romeo flag, signifying that we are officially alongside the other ship.

34

What is another term for the Ensign that is flown from the main truck while underway?

The Steamer

35

What three times are the commissioning pennants aren't flown?

  • Precom
  • Decom
  • When the admiral flag is flying

36

Which lines run north and south?

Longitude

37

What is the auxiliary conning station used for?

Alongside Operations, during unreps and mooring operation

38

What are some tools usd by the QMOW?

  • CHart
  • Pencil
  • PMP
  • Compass
  • Erasure
  • Signal Flags
  • Marine Sextant
  • Day Shapes
  • Telescopic Alidade

39

What does GPS stand for?

Global Positioning System

40

What is the speed of wind for it to be considered a hurricane?

64+ Knots

41

What is a fathometer?

Measures the depth of water

42

What is a clinometer?

Measures the list

43

What is the barometer used for?

Measures the amount of moisture in the air

44

What is the Starboard Pennant used for?

Senior Officer Present Aboard

45

What is the Prep flag used for?

15 Min to Discharge

46

What is the 1st Substitute flag used for?

Absence of Flag Officer

47

What is the 2nd Substitute flag used for?

Absence of Chief of Staff

48

What is the 3rd substitute flag used for?

Absencse of Commanding Officer

49

What is the 4th Substitute flag used for?

Absence of civil Official

50