Rules of The Road

1

• Rules of The Road
• Purpose and Scope

2
Agenda

• This section of instruction will cover the Rules
  of the Road, as published in the Navigation Rules
  (COMDTINST M16672.2D)

3
References

• COMDTINST M16672.2D
• Referred to by mariners
• as the
• Rules of the Road

4
Navigation RulesPurpose and Scope

• AGENDA
• Purpose and Scope
• Principles of Maritime Law
• Rule 1 Applicability
• Rule 2 Rule of Good Seamanship
• Rule 3 General Definitions
• Applicable reading USCG pp. 1-11.

5
Purpose of Scope of the Rules of the Road

• Sources
• 1972 COLREGS (International Rules)
• Regulations for the Prevention of Collisions at
  Sea
• Amended in 1983, 1989, 1991 by the IMO
• 1980 Navigation Rules Act (Inland Rules)
• Applies exclusively to US inland waters
• NOTE Navigation Rules have the force of law.

6
Rule 1(a) Applicability

• Nav Rules apply based upon a vessels location.
• COLREGS Line of Demarcation

• These rules shall apply to all vessels upon the
  high seas and in all waters connected therewith
  navigable by seagoing vessels.

7
Rule 2 Responsibility

• Nothing in these Rules shall exonerate any
  vessel, or the owner, master or crew thereof,
  from the consequences of any neglect to comply
  with these Rules or of the neglect of any
  precaution which may be required by the ordinary
  practice of seaman.
• General Prudential Rule the mariner is
  responsible not only for complying with the Rules
  but also for avoiding a collision.
• Special Situations
• In extremis situations

8
Special Situations(not covered by the Rules)
9
What is Good Seamanship?
A. Turn around and go the other way. B. Speed
up and pass vessel B on her starboard side. C.
Overtake Vessel B on her port side after
signaling. D. Slow down and stay behind Vessel B.
10
Rule 3 General Definitions

• Vessel
• Power driven vessel
• Sailing vessel

• Underway
• Making way
• Not making way

• Special Conditions
• Vessel engaged in fishing
• Not under command
• Restricted in ability to maneuver
• Constrained by draft (intl rules only)

11
Rule 3 DefinitionsVessel

• Vessel includes every description of water
  craft used or capable of being used as a means on
  transportation on water.

• Includes
• Power-driven vessels
• Sailboats
• Seaplanes
• Non-displacement craft
• WIG
• Power driven vessel

12
Rule 3 DefinitionsVessel engaged in fishing

• Vessel engaged in fishing means any vessel
  fishing with nets, lines, trawls or other fishing
  apparatus which restrict maneuverability.

• Does NOT include
• Vessel engaged in trolling.

13
Rule 3 DefinitionsVessel not under command

• Vessel not under command means a vessel which
  through some exceptional circumstances is unable
  to maneuver to comply with the Rules.

• Examples
• Propulsion casualty
• Steering casualty

14
Rule 3 DefinitionsVessel restricted in ability
to maneuver

• Vessel restricted in ability to maneuver means a
  vessel which from the nature of her work is
  unable to keep out of the way of another vessel.

• Examples
• Laying navaids
• Dredging/Surveying
• UNREP
• Flight Ops
• Mineclearance Ops

15
Rule 3 DefinitionsVessel constrained by draft

• Vessel constrained by draft means a power driven
  vessel which, because of her draft in relation to
  the available depth is severely restricted in her
  ability to deviate from her present course.

16
Rule 3 DefinitionsUnderway, Not-underway
17
Rule 3 DefinitionsRestricted Visibility
18
Rule 3 DefinitionsRestricted Visibility

• Fog
• Falling snow
• Heavy Rainstorms
• Sand storms
• Similar circumstances

19
Rule 3 DefinitionsWIG

• Wing-in-ground (WIG) craft a vessel capable of
  operating completely above the surface of the
  water on a dynamic air cushion created by
  aerodynamic lift due to the ground effect between
  the vessel and the waters surface. WIG craft are
  capable of operating at speeds in excess of 100
  knots.

20
Rule 4 Application

• Defines the application of rules 5-10
• These rules apply in ANY visibility

21
Rule 5 Look-out

• Application (Rule 4) - Any condition of
  visibility
• Look-out (Rule 5)
• Maintain Proper Lookout
• Use all available means
• Binoculars/Radar
• Bearing circle/Alidade
• Must use sight and hearing
• Night vision devices
• Also required at anchor

22
Rule 6 Safe Speed

• Determinants of Safe Speed
• State of visibility
• Traffic density
• Stopping distance and turning ability
• Presence of background lighting
• State of winds, sea, and current
• Draft of vessel in relation to charted depth
• Effectiveness of Radar

23
Rule 7 Risk of Collision

• Risk of Collision (Rule 7)
• Use all available means to determine
• Early use of RADAR
• Dont make assumptions
• Risk of collision exists when vessels have
• CBDR Constant Bearing, Decreasing Range
• Very High Bearing Drift
• Bearing drift is the most important determinant
  of risk of collision

24
Rule 8 Action to Avoid Collision

• Obedience must be timely and substantial.
• Two variables can be altered to avoid collision
  course and speed.
• Change course to avoid close-quarters
  situations
• Slacken speed or take all way off to avoid
  collision
• Escape Clause if the circumstances of the
  case admit
• You are not required to put yourself in a worse
  condition to avoid collision (e.g.. run aground)

25
Rule 9 Narrow Channels

• Narrow Channels (Rule 9)
• Stay on the right side of the channel
• Sailing vessels and vessels lt 20 meters shall not
  impede vessels restricted to the channel.
• Fishing vessels shall not impede
• Crossing vessels shall not impede

26
Rule 10 Traffic Separation Schemes

• Traffic Separation Schemes (Rule 10)
• Use small angle of approach to enter/depart
• Cross the scheme at right angles
• You can fish in the lanes as long as you do not
  impede passage of the other vessels

27
Rule 10 Traffic Separation Schemes
2. CROSS AT RIGHT ANGLES
3. ENTER _at_ SMALL ANGLE
1. PROCEED IN APPROPRIATE LANE
4. AVOID ANCHORING
28
Rule 11Conduct of Vessels in Sight of One
Another

• Application rule Rules 12-18
• Applies to all vessels in sight of one another

29
Vessels in Sight of One AnotherRule 12 Sailing
Vessels
30
Vessels in Sight of One AnotherRule 13
Overtaking

• Rule 13 requires the overtaking vessel to keep
  out of the way of the vessel being passed.
• a vessel 22.5 abaft the beam is overtaking all
  others are crossing situations
  An overtaking situation
  exists when a vessel approaches
  
  
• An overtaking situation exists when a vessel
  approaches another vessel more than 22.5deg abaft
  the beam.

31
Vessels in Sight of One AnotherRule 14 Meeting
(Head-on) Situation

• Two vessels who are on reciprocal (or near
  reciprocal) courses and are at risk of collision
• Rule 14 requires both power vessels to maneuver
  to starboard.
• 
  An overtaking situation exists when a vessel
  approaches
  
• A meeting situation exists if two power vessels
  approach on reciprocal or near reciprocal courses.

• Because of the nature of the situation, there is
  no giveway vessel. Both are responsible to
  maneuver

32
Vessels in Sight of One AnotherRule 15 Crossing
Situation

• Rule 15 requires the vessel that has the other on
  its starboard side to keep clear.
• An
  overtaking situation exists when a vessel
  approaches
  
• At night the stand-on vessel sees the green
  sidelight of the give-way vessel, and the
  give-way vessel sees the red sidelight of the
  stand-on vessel.

33
Rule 15 (cont)
Crossing Situation
34
Rule 16 Give-way Vessel

• Take early and substantial action to stay out of
  the way of the stand-on vessel

35
Rule 17 Stand-on Vessel

• Maintain course and speed
• Take action if the give-way is not taking
  substantial action to avoid collision
• If risk of collision exists and if circumstance
  admit it, avoid altering course to port.

36
Rule 18 ResponsibilitiesBetween Vessels

• Vessel being Overtaken
• Vessel Not under command
• Restricted in ability to maneuver
• Vessel Constrained by draft
• Vessel engaged in Fishing
• Sailing vessels
• Power driven vessels
• Seaplanes
• WIG

Stay out of the way of
37
Rule 19 Conduct of Vessels in Restricted
Visibility

• For vessels not in sight of one another
• Observe a safe speed and have engines ready for
  immediate maneuvering.
• Avoid altering course to port when another may
  exist forward of beam (except in overtaking
  situation)
• Avoid altering course towards a vessel abeam or
  abaft the beam.
• For fog signals heard forward of the beamgt
  reduce speed to minimum steerageway and navigate
  cautiously.

38
Rules 20 Application of Lights and Dayshapes
LIGHTS

• Sunset to Sunrise

DAYSHAPES
39
Rules 21-24 Lights and Dayshapes

• AGENDA
• Rule 21 Definitions
• Rule 22 Visibility of Lights
• Rule 23 Power Driven Vessels Underway
• Rule 24 Towing and Pushing
• Applicable reading USCG pp. 38-70.

40
Purpose of Lights and Shapes

• To indicate hierarchy under the steering and
  sailing rules.
• To aid in the determination of stand on/give way
  status.
• To indicate to an approaching vessel information
  not readily available by visual observation.
• To identify the occupation of certain vessels.
• To aid in the determination of angle on the bow
  (AOB) and course.

41
Rule 22 Visibility of Lights

• Min Ranges
• TYPE OF LIGHT COLOR ARC 50M 12-50M
• Masthead white 225 6 nm 5 nm
• Sidelight red/green 112.5 3 nm 2 nm
• Sternlight white 135 3 nm 2 nm
• Towing yellow 135 3 nm 2 nm
• All around various 360 3 nm 2 nm
• Special Flashing yellow/blue 360 2 nm 2 nm
• Range Light - refers to the second masthead light
  placed aft and higher than the forward masthead
  light (gt50 m)
• Flashing Light - flashes at regular intervals at
  120 hz. Found on surfaced subs and
  non-displacement craft in the non-displacement
  mode.

42
Rule 21
Definitions
225o

• MASTHEAD LIGHT

43
Rule 21
Definitions (cont)
112.5o
112.5o

• SIDELIGHTS

44
Rule 21
Definitions (cont)
135o

• STERNLIGHT

45
Rule 21
Definitions (cont)
135o

• TOWING LIGHT

46
Rule 21Definitions (cont)
Masthead Lights 225o coverage
Side Lights 112.5o coverage
Bow Aspect
47
Rule 21
Definitions (cont)
112.5o
112.5o
112.5o
112.5o

135o
360o
135o
48
Rule 21
Definitions (cont)
360o

• ALL-ROUND LIGHT

49
Rule 21
Definitions (cont)

• FLASHING LIGHT
• (Color not specified, 120 fpm)

50
Rule 21
Definitions (cont)
INLAND
ONLY
!

• SPECIAL FLASHING LIGHT
• (Yellow, 50 - 70 fpm)

51
Rule 23 Power-Driven VesselsRule 24 Towing and
Pushing

• TOWING ASTERN
• Vessel lt 50 m Tow lt 200 m
• Vessel lt 50 m Tow gt 200 m
• Vessel gt 50 m Tow lt 200 m
• Vessel gt 50 m Tow gt 200 m
• COMPOSITE UNIT
• PUSHING AHEAD/ALONGSIDE
• Vessel gt 50 m International, Inland
• Vessel lt 50 m International, Inland
• TOWING and RESTRICTED IN ABILITY TO MANEUVER
• LIGHTING THE TOW

52
Rule 23 (cont)
P.D. Vessel less than 50 meters (underway)
53
Rule 23 (cont)
P.D. Vessel equal or greater to 50 meters
(underway)
54
Rule 23 (cont)
P.D. Vessel less than 12 meters (underway)
55
Rule 23 (cont)
P.D. Vessel less than 7 meters (underway)
International Only!
International Only!
International Only!
International Only!
International Only!
International Only!
7 kts Max Speed!
56
Rule 23 (cont)
Great Lakes Exception
Inland Only!
Masthead
Sidelights
All-round white
All-round white
All-round white
All-round white
All-round white
All-round white
All-round white
All-round white
57
Rule 24
Towing and Pushing
Types of Towing
Towing astern
Towing alongside

• Pushing ahead

Composite Unit
58
Rule 24 (cont)
Towing Astern
Four combinations
I
II
III
IV
Towing vessel
lt50m
lt50m
gt50m
gt50m
Tow
lt200m
lt200m
gt200m
gt200m
59
Rule 24 (cont)
Towing Astern

• P.D. Vessel (lt50m) Towing

TOW lt 200m
TOW gt 200m
2 Mastheads
3 Mastheads
Vertical Line
Vertical Line
Sidelights
Sidelights
Stern light
Stern light
Towing light
Towing light
60
Rule 24 (cont)
Towing Astern

• P.D. Vessel (gt50m) Towing

TOW lt 200m
TOW gt 200m
2 Mastheads
3 Mastheads
2nd Masthead
2nd Masthead
Sidelights
Sidelights
Stern light
Stern light
Towing light
Towing light
61
Rule 24 (cont)
Towing Astern

• Towing vessel lt 50m, Tow lt 200m

62
Rule 24 (cont)
Towing Astern

• Towing vessel lt 50m, Tow gt 200m

63
Rule 24 (cont)
Towing Astern

• Towing vessel gt 50m, Tow lt 200m

64
Rule 24 (cont)
Towing Astern

• Towing vessel gt 50m, Tow gt 200m

65
Rule 24 (cont)
Pushing Ahead
Composite units
66
Rule 24 (cont)
Towing Alongside or Pushing

• NOT a Composite Unit

INTERNATIONAL Rules
2 Mastheads - vertical line
2nd Masthead - if gt 50m
Sidelights
Stern light
Note NO Towing Light for International Rules!
67
Rule 24 (cont)
Towing Alongside or Pushing

• NOT a Composite Unit

INLAND Rules
2 Mastheads - vertical line
2nd Masthead - if gt 50m
Sidelights
2 Towing Lights - vertical line
68
Rule 24 (cont)
Towing Alongside or Pushing

• NOT a Composite Unit

69
Rule 24 (cont)
Vessel Being Towed Astern
Sidelights
Sternlight
70
Rule 24 (cont)
Vessel Being Pushed Ahead

• NOT a Composite Unit

INTERNATIONAL Rules
Sidelights - at forward end
71
Rule 24 (cont)
Vessel Being Pushed Ahead

• NOT a Composite Unit

INLAND Rules
Sidelights
Special Flashing Light
72
Rule 24 (cont)
Vessel Being Towed Alongside
INTERNATIONAL Rules
Sidelights
Sternlight
73
Rule 24 (cont)
Vessel Being Towed Alongside
INLAND Rules
Sidelights
Sternlight
Special Flashing Light
74
Rule 24
Towing and Pushing
Length of Tow exceed 200m
Displayed on the Tug the Tow
75
Rule 25
Sailing Vessels

• Sailing Vessel (Underway)

Vessel ³ 20m
Vessel lt 20m
Sidelights
Combined Lantern
Stern light
76
Rule 25
Sailing Vessels (cont)
Sailing Vessel (Underway)
Also may show
Not w/ Combined Lantern
77
Rule 25
Sailing Vessels (cont)
Sailing Vessels
Mastheads
78
Rule 25 (cont)
Sailing Vessels
79
Rule 25
Sailing Vessel

Sailing Vessel proceeding under sail AND
propelled by machinery
80
Rule 26
Fishing Vessels
Includes
Trawling
Fishing other than trawling
Note Vessels covered in Rule 26 show ONLY the
lights required by Rule 26
81
Rule 26 (cont)
Fishing Vessels
Outlying gear gt 150m
82
Rule 26
Fishing Vessels (cont)
Underway OR _at_ Anchor
Trawling Vessels
All-round GREEN -over- All-round WHITE
2nd Masthead - if gt50m
Sidelights Sternlight - if making way
83
Rule 26
Fishing Vessels (cont)

• Trawling vessel gt 50m Making Way

84
Rule 26
Fishing Vessels (cont)
Underway OR _at_ Anchor
Fishing Vessels
All-round RED -over- All-round WHITE
Sidelights Sternlight - if making way
All-round WHITE - if gear gt 150m
85
Rule 26
Fishing Vessels (cont)
Fishing Vessels
Mastheads
86
Rule 26
Fishing Vessels (cont)

• Fishing vessel Making Way

87
Rule 26
Trawling Vessels
88
Rule 27
Vessels Not Under Command
Restricted in Ability to Maneuver
89
Rule 27 (cont)
Vessels Not Under Command
All-round RED -over- All-round RED
Sidelights Sternlight - if making way
90
Rule 27
Vessels Not Under Command
91
Rule 27 (cont)
Vessels Not Under Command
Mastheads
92
Rule 27 (cont)

• Vessel Not Under Command
• Making Way

93
Rule 27 (cont)

• Vessel Not Under Command
• NOT Making Way

94
Rule 27 (cont)
Vessels Restricted in Ability to Maneuver (R.A.M.)
All-round RED -over- All-round WHITE
-over- All-round RED
Masthead light
If Making Way
2nd Masthead light - if gt50m
Sidelights Sternlight
95
Rule 27 (cont)
Vessels R.A.M.
96
Rule 27 (cont)

• Vessel R.A.M., gt 50m, Making Way

97
Rule 27 (cont)
Special Types of R.A.M. Vessels
Towing
Underwater / Diving Ops
Dredging
Mineclearance Ops
98
Rule 27 (cont)
R.A.M. Vessel Engaged in Dredging
Required R.A.M. lights
All-round GREEN -over- All-round GREEN
On Safe Side
All-round RED -over- All-round RED
On Obstructed Side
99
Rule 27 (cont)
R.A.M. Vessel Engaged in Dredging
Aspect?
Bow
100
Rule 27 (cont)
R.A.M. Vessel Engaged in Dredging
Safe Side
Obstructed Side
101
Rule 27 (cont)
R.A.M. Vessel Engaged in Mineclearance Ops
Required Power Driven Vessel lights
PLUS
On Mast
102
Rule 27 (cont)
R.A.M. Vessel Engaged in Mineclearance Ops
103
Rule 28
Vessels Constrained by Draft
All-round RED -over- All-round RED
-over- All-round RED
Required Power Driven Vessel lights
International Only!
104
Rule 28 (cont)

• Vessel Constrained by Draft gt50m

105
Rule 28
Vessels Constrained by Draft
106
Rule 29
Pilot Vessels
All-round WHITE -over- All-round RED
Sidelights Sternlight - if making way
107
Rule 29 (cont)
Pilot Vessels
Mastheads
108
Rule 29 (cont)

• Pilot Vessel - Underway

109
Rule 30
Anchored Vessels
Vessel ³ 50m
Vessel lt 50m
All-round WHITE near bow
All-round WHITE where best seen
All-round WHITE near stern lower
110
Rule 30
Anchored Vessels (cont)
Vessel ³ 100m
All-round WHITE - near bow
All-round WHITE - near stern lower
Available Deck or Working lights
111
Rule 30 (cont)

• Anchored Vessel, gt 50m

112
Rule 30
Vessel _at_ Anchor
113
Rule 30 (cont)
Vessel Aground
Required Anchor lights PLUS
All-round RED -over- All-round RED
114
Rule 30 (cont)

• Aground Vessel, gt 50m

115
Rule 30 (cont)
Vessel Aground
116
Rules 31-37Sound and Light Signals

• AGENDA
• Rule 32 - Definitions
• Rule 34 - Maneuvering and Warning Signals
• Rule 35 - Sound Signals in Restricted Visibility
• Rule 36 - Signals to Attract Attention
• Rule 37 - Distress Signals
• Annex I -V
• Applicable reading Nav Rules pp. 114-175

117
Rule 31Lights and Shapes Seaplanes

• Where its impracticable for a seaplane to
  exhibit lights and shapes of the rules of the
  road, they shall exhibit lights and shapes as
  closely similar in characteristics and position
  as possible

118
Rule 32 Sound and Light SignalsInternational
vs. Inland

• INTERNATIONAL RULES
• Sound signals for International Rules are signals
  of action
• Signals are sounded upon rudder order
• Exchanged by a power-driven vessel and another
  vessel
• Exchanged if vessels are in sight and
  maneuvering is reqd
• INLAND RULES
• Sound signals for Inland Rules are signals of
  intent
• Vessels do not maneuver until signals are agreed
  upon
• Exchanged between power-driven vessels only
• Exchanged if vessels are in sight and lt ½ nm CPA

119
Rule 32 Sound and Light Signals

• Short Blast- about one second duration
• Long Blast - 4-6 second duration
• Vessels lt 100m in length whistle and bell
• Vessels gt 100m in length whistle, bell, and
  gong
• Vessels lt 12m in length some type of sound
  signaling device

120
Rule 34 Maneuvering and Warning Signals -
Overtaking

• 
  An overtaking situation exists when a
  vessel approaches
  
• An overtaking situation exists when a vessel
  approaches another vessel more than 22.5o abaft
  the beam.

121
Rule 34 Maneuvering and Warning Signals- Crossing

• 
  An overtaking situation exists when a
  vessel approaches
  
• At night, the stand-on vessel sees the green
  sidelight of the give-way vessel, and the
  give-way vessel sees the red sidelight of the
  stand-on vessel.

122
Rule 34 Maneuvering and Warning Signals - Meeting

• 
  An overtaking situation exists when a
  vessel approaches
  
• A meeting situation exists if two power vessels
  approach on reciprocal or near reciprocal courses.

123
Rule 35 Sound and Light Signals in Restricted
Visibility

• VESSELS UNDERWAY
• Power-Driven vessel (making way) 1 PROLONG
  BLAST (2 min)
• Power-Driven vessel (not making way) 2 PROLONG
  BLASTS (2 min)
• Vessel Not Under Command, 1 PROLONG BLAST, 2
  SHORT
• Restricted in ability to maneuver,
• Sailing vessels, Vessels fishing,
• Vessels constrained by draft
• Vessels being towed 1 PROLONG BLAST, 3
  SHORT
• Piloting Vessel 4 SHORT BLASTS

124
Rule 35 Sound and Light Signals in Restricted
Visibility

• VESSELS NOT UNDERWAY
• Vessel at anchor, less than 100 m 5 sec
  BELL (every 1 min)
• Vessel at anchor, greater than 100 m 5 sec
  BELL/5 sec GONG (every 1 min)
• Vessel at anchor 1 SHORT, 1 PROLONGED, 1 SHORT
• (warns position and threat of collision)
• Vessel aground, less than 100 m SSS/BELL/SSS
  (every 1 min)
• Vessel aground, greater than 100
  m SSS/BELL/SSS/GONG (every 1 min)
• SSS THREE SHORT STOKES
• Vessel engaged in fishing at anchor 1 PROLONG, 2
  SHORT (every 2 min)

125
Rule 35 Sound and Light Signals in Restricted
Visibility

• DANGER SIGNAL
• 5 or more short blasts on the whistle
• indicates failure to understand intentions or
  actions OR doubt that sufficient action to avoid
  collision is being taken

126
Rule 37 Distress Signals
p. 126 in Nav Rules
127
Quiz

• Identify the following vessel size, aspect, and
• condition by its light scheme

• Vessel is
• gt50 meters in length
• Bow aspect
• Restricted in ability to maneuver,
• Making way

128
Quiz
2. Identify the following vessel size, aspect,
and condition by its light scheme

• Vessel is
• gt50 meters in length
• Starboard aspect(can tell this two ways)
• Trawler, making way

129
Quiz
3. Complete the following chart for lights
Length of vessel gt50m lt50m, gt12m lt12m Incon. partly submerged
Masthead nm 5 nm 2 nm
Side 3 nm 2 nm nm
Stern 3 nm nm 2 nm
Towing nm 2 nm 2 nm
All round 3 nm 2 nm nm White nm
Special FL1 2 nm 2 nm 2 nm
6
1
2
3
2
3
130
Quiz
4. The following day shape signifies what?

• A. A Really bad day
• Vessel Not Under Command
• Fishing Vessel with gear extended
• Vessel Restricted in Ability to Maneuver, dredging

131
Quiz
5. This Sailboat is being powered by what?

1. Sail
2. Wind
3. Oars
4. Machinery

1. Sail
2. Wind
3. Oars
4. Machinery

132
Quiz
1. Rule 2 states that vessels may depart from
the Rules when A. it is convenient for both
vessels involved B. the maneuvers are entered in
the deck log C. it is necessary to avoid
immediate danger D. None of the above
1. Rule 2 states that vessels may depart from
the Rules when A. it is convenient for both
vessels involved B. the maneuvers are entered in
the deck log C. it is necessary to avoid
immediate danger D. None of the above
133
Quiz
2. What is the definition of a Vessel Restricted
in her ability to maneuver?
Restricted due to the nature of her work
134
Quiz
3. Under Rule 5 (lookout rule) a lookout is
required at all times when underway. A. TRUE B.
FALSE
3. Under Rule 5 (lookout rule) a lookout is
required at all times when underway. A. TRUE B.
FALSE
135
Quiz
4. Rule 6 (Safe Speed) lists all of the
following considerations EXCEPT A. Traffic
density B. Visibility C. Background
Lights D. Economical speed of vessel
4. Rule 6 (Safe Speed) lists all of the
following considerations EXCEPT A. Traffic
density B. Visibility C. Background
Lights D. Economical speed of vessel
136
Quiz
5. According to Rule 7, a Risk of Collision is
deemed to exist in what circumstance?
CBDR
137
Quiz
6. According to Rule 8, what are the
requirements for avoiding actions when
maneuvering IAW the Rules?

• Early
• Substantial
• Check results