Nav Rules

Question 1

Rule 1

Answer 1

Application

These rules shall apply to all vessels upon the high seas and waters.

Question 2

Rule 2

Answer 2

Responsibility

Every vessel shall comply with these rules. Vessels may make a departure from these rules to avoid immediate danger

Question 3

Rule 3

Answer 3

General definitions

Question 4

Rule 4

Answer 4

Application

Question 5

Rule 5

Answer 5

Look out

Every vessel shall at all times maintain a proper look out by sight, hearing as well as all available means appropriate in the prevailing circumstances and conditions so as to make a full appraisal of the situation and of the risk of collision.

Question 6

Rule 6

Answer 6

Safe Speed

Every vessel shall at all times proceed at a safe speed so that she can take proper and effective action to avoid collision and be stopped within a distance appropriate to the prevailing circumstances and conditions.

Question 7

Safe speed by all vessels

Answer 7

1. The state of visibility
2. Traffic density
3. The maneuverability of the vessels
4. Background light at night
5. Weather
6. Draft

Question 8

Safe speed: vessels with operational radar

Answer 8

1. Characteristics, efficiency, and limitations of the radar equipment
2. Any constraints imposed by the radar range scale in use
3. The effect on radar detection from sea state weather and other sources of interference
4. Small vessels, ice and other floating objects that may not be detected
5. The number, location, and movement of vessels detected by radar
6. The more exact assessment of the visibility used to determine the range of other vessels in the vicinity

Question 9

Rule 7

Answer 9

Risk of collision
Every vessel shall use all available means appropriate to determine if risk of collision exists

Question 10

Factors of risk of collision

Answer 10

1. A compass bearing of an approaching
   vessel does not appreciably change
2. Such risk may exist when an appreciable bearing change is evident.

Question 11

Rule 8

Answer 11

Action to avoid collision

Any acton taken to avoid collision shall be taken in accordance with these rules. A vessel may alter from these rules to avoid imminent collision.

Question 12

Rule 9

Answer 12

Narrow channels

A vessel proceeding along a narrow channel shall keep near to the outer limit of the channel which lies on her starboard side as is safe and practicable.

Question 13

Rule 10

Answer 13

Traffic separation schemes

Question 14

Rule 11

Answer 14

Application
Rules 11-18 apply to vessels in sight of one another

Question 15

Rule 12

Answer 15

Sailing vessels
1. When each has the wind on a different side, the vessel which has the wind on her port shall keep out of the way.
2. When both have wind on the same side, the vessel which is to the windward shall keep out of the way of the vessel to the leeward.
3. If a vessel with the wind on the port sees a vessel to windward and cannot determine with certainty which side the other vessels wind is off of, she shall keep out of the way of the other.

Question 16

Rule 13

Answer 16

Overtaking

Question 17

Rule 14

Answer 17

Head on situation

Question 18

Rule 15

Answer 18

Crossing situation
The vessel which has the other vessel on her own starboard side shall keep out of the way

Question 19

Rule 16

Answer 19

Action by give way vessel

Question 20

Rule 17

Answer 20

Action by stand on vessel

Question 21

Rule 18

Answer 21

Responsibility between vessels

Not under command
Restricted in ability to maneuver
Constrained by draft
Fishing
Sailing
Power driven
Sea plane
Wig craft

Question 22

Rule 19

Answer 22

Conduct of vessels in restricted visibility

Every vessel shall proceed at a safe speed adapted o the prevailing circumstances and conditions of restricted visibility.
Power driven vessels shall have her engines ready for immediate maneuver.

Question 23

Rule 20

Answer 23

Application
Rules in this part shall be complied with in all weathers.

Question 24

Rule 21

Answer 24

Definitions

Question 25

Rule 22

Answer 25

Visibility of lights