navigation Flashcards

1
Q
Discuss Inland
vs.
International
Rules of the
Road
A

International Rules - for all vessels on the

HIGH SEAS and in CONNECTING WATERS

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2
Q

WIND on small

boats

A

Boat is moved in the direction of the wind

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3
Q

SEAS

on small boats

A

harder to handle steering

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4
Q

CURRENT on

small boats

A

CAUSES

DRIFT in direction of flow

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5
Q

PROPELLER
ACTION affects
small boat
handling

A

Causes boat to ROTATE and cause

FORWARD THRUST

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6
Q

SCREW
CURRENT
affects small
boat handling

A

PROPELLERS DRAW IN WATER FROM
EVERY DIRECTION AND AROUND THE
BLADES, PROVIDING A FORWARD
THRUST

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7
Q

SIDE FORCE
affects small
boat handling

A

Causes boat to MOVE SIDEWAYS

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8
Q

CAVITATION
affects small
boat handling

A

LOSS of EFFECTIVE THRUST and

propeller EFFICIENCY

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9
Q

RUDDER
ACTION
affects small
boat handling

A

pushes the stern and

bow in OPPOSITE DIRECTIONS

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10
Q

compass
errors:
Variation

A

DIFFERENCE between the value of TRUE

NORTH AND MAGNETIC NORTH.

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11
Q

compass
errors:
Deviation

A

Amount that the compass is deflected from
the MAGNETIC MERIDIAN because of the
effects of the SHIPS IRON.

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12
Q
Describe
procedures to
determine
compass
course on a
chart.
A

compass course. : the course which a ship is

intended to travel

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13
Q

Define how to
determine safe
speed:
State of visibility

A

As visibility decreases, boats speed
should also decrease
Safe Speed- Rule 6

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14
Q

Define how to
determine safe
speed:
Traffic density

A

Alot of traffic density requires slower

speed to avoid collision

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15
Q

determine safe
speed:
Stopping distance
and turning ability

A

Faster speed increase stopping distance
required
Slow speed when making sharp turns so
that you dont overshoot your turn

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16
Q

Define how to
determine safe
speed:
Night

A

Decrease speed at night in order to
readily recognize other vessels and
buoys

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17
Q
Define how to
determine safe
speed:
Wind, sea, and
current
A

Wind, seas, and current increase the sea
state. More RPMS may be required to
fight resistance. More control is required
when mooring

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18
Q
Define how to
determine safe
speed:
Limitations of the
radar equipment
A

Limitations of radar requires slower

speed and lookouts to be more alert

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19
Q
Define how to
determine safe
speed:
Effect on radar
detection of the
sea state, weather
A

Vessel speed should be reduced when
interference caused by sea state of
weather impairs the performance of the
radar

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20
Q
Define how to
determine safe
speed:
Ice and other
floating objects
may not be
detected by radar
A

requires slower speed and lookouts to

be more alert

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21
Q

Define Plan of
Intended
Movement (PIM)

A

The PLANNED ROUTE that a ship is TO

FOLLOW Must be approved by CO.

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22
Q

Define
Line of
Position
(LOP)

A

A line of bearing (direction) to a known object,
which a vessel is presumed to be located on at
some point.

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23
Q

Define
Dead
Reckoning

A

Determination of approx. position by advancing
a previous position for course and distance
only, without regard to other factors, such as,
wind, sea conditions and current

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24
Q

Define
Compass
Bearing

A

direction towards which you are headed, as

shown by a compass

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25
Define Relative Bearing
Direction from the boat's bow at 000°, measured | clockwise through 360°
26
Define Fix
A known point on Earth.
27
Discuss "IALA" | systems A and B
``` International Association of Lighthouse Authorities IALA System A: Asia, Africa, Europe o Green right returning • IALA Systems B: The Americas, and Japan. ```
28
Discuss the following element of a Contact Report: Bearing
Always report contacts in relative bearings. Given in 3 digits, spoken digit by digit
29
``` Discuss the following element of a Contact Report: Position Angle ```
Report position angle on all aircraft. Given in 1 or 2 digits, spoken as whole number.
30
``` Discuss the following element of a Contact Report: Target Angle ```
Report target angle on all ships. | Given in 3 digits, spoken digit by digit
31
``` Discuss the following element of a Contact Report: Range Estimation ```
horizion is the only readily | available reference point
32
``` Discuss the following element of a Contact Report: Speed Estimation ```
readily visible aid in estimating speed | is a ship's bow wave and stern wake
33
``` Define the actions to be taken by the Give Way and Stand-on vessels in a HEAD ON situation ```
Head-on Situation - (a) When two vessels are heading head on towards each other, should pass port to port
34
``` Define the actions to be taken by the Give Way and Stand-on vessels in a CROSSING situation ```
The vessel which has the other on her own starboard side shall keep out of the way and avoid crossing ahead if circumstances permit.
35
Define High | Tide
MAXIMUM water height resulting from the | RISING tide
36
Define Low Tide
MINIMUM water height resulting from the | OUTGOING tide.
37
Define Mean | High Water
The AVERAGE height of all HIGH-tide water levels, measured over a 19-year period
38
Define Mean | Low Water
The AVERAGE height of all LOW-tide | levels, observed over a 19-year period
39
Define Spring | Tide
Tides that occur when SUN AND MOON | IN LINE WITH EARTH,
40
Define Neap Tide
Tides that occur when the SUN AND | MOON ARE 90° apart,
41
Define Flood | Current
Horizontal movement of water is | TOWARD SHORE
42
Define Ebb | Current
Horizontal movement of water is | AWAY FROM SHORE
43
Define Slack | Water
period of time where there is | LITTLE OR NO CURRENT
44
Define Set
DIRECTION of the current
45
Define Drift
The velocity (speed) of current
46
Describe the Masthead Light and how to interpret it
white light 225 degrees Placed over fore to aft center-line of vessel
47
Describe the Sidelights and how to interpret them
Green- starboard Red- Port 112.5 degrees
48
Describe the Stern Light and how to interpret it
white light placed as near stern | 135 degrees
49
Define Restricted visibility
any condition in which visibility is restricted by fog, snow, rainstorms, or other bad weather
50
Define Vessel constrained by draft
A vessel who is severely restricted in her ability to deviate from the course due to her draft in relation to water depth
51
Define Vessel restricted in her ability to maneuver
Restricted in her ability to maneuver DUE | TO THE NATURE OF HER WORK
52
Define Vessel not under command
A vessel that is UNABLE to maneuver
53
Define Power | driven vessel
Any vessel propelled by machinery
54
Define Short blast and prolonged blast
SHORT BLAST: about one second in duration. PROLONGED BLAST: from four to six seconds in duration.
55
Define a Bell
Used on vessels 12 meters or more in | length
56
Define a Gong
Used on vessels 100 meters or more in | length .
57
What is a SOUNDING on a nautical chart
Measure of charted depth of water.
58
What is a COMPASS ROSE on a nautical chart
Compass Rose - Outer circle is true North, inner circle is magnetic North. The difference between both is called ANGLE OF DECLINATION
59
What are CONTOUR LINES on a nautical chart
contour lines show the shape of | underwater relief
60
What are Latitude / Longitude Lines on a nautical chart
``` Latitude lines are reference points in a north and south direction with the equator as their zero reference point Longitude lines are the east and west reference points with the prime meridian as their zero reference point ```
61
Target Angle
The relative bearing of your ship from | another ship
62
What does 1 Short | Blasts mean?
Inland: I am altering course to PORT International: I am altering course to STBD
63
What does 2 Short | Blasts mean?
Inland: I am altering course to STBD International: I am altering course to PORT
64
What does 3 short | blasts mean
Astern Propulsion
65
What does 5 short | blasts mean?
GENERAL DURESS INCLUDING MAN OVERBOARD DANGER
66
How far is a nautical mile in yards
2000 yards
67
When plotting a running fix, how many fixed objects do you need?
One
68
Oscar Flag
Man overboard
69
Bravo Flag
Ammo, Fuel, or Explosive transfer. Also for | live fire.
70
Code Alpha | Flag
Diving Operations
71
International | Dive Flag
Diving Operations
72
Quebec Flag
Small Boat Recall
73
Hotel Flag
Harbor Pilot onboard
74
Foxtrot Flag
Fixed Wing Aircraft Operations. Commonly | used on aircraft carriers
75
India Flag
Prepared or Intends to receive you | alongside
76
Papa Flag
Personnel Recall
77
Uniform Flag
You are running into danger
78
Navigation Lights: | Red, White, Red
Restricted Ability Ahead
79
Navigation Lights: | Red over Red
The Captain Is Dead | Vessel not under command
80
Navigation Lights: Red over Red over Red
Constrained by draft
81
Navigation Lights: | Red Over White
Fishing at night
82
Navigation Lights: | Red Over Green
Sailing Machine
83
Navigation Lights: | White Over Red
Pilot Ahead
84
Navigation Lights: Yellow Over Yellow
A pushing or Hip Towing Fellow
85
Navigation Lights: | Yellow over white
tug towing astern
86
Navigation Lights: Green over Green over Green
Mineclearing
87
Navigation Lights: | Green over white
Trawling
88
Day shape for a | anchored vessel
1 black ball
89
Day shape for a | vessel aground
3 vertical black balls
90
Day shape for a vessel not under | command
1 vertical black | balls
91
Day shape for a vessel constrained by | her draft
1 black cylinder | shape
92
Day shape for a towed vessel and | vessel being towed
1 black diamond | on each vessel