ASA 106 – ADVANCED COASTAL CRUISING – QUESTIONS AND ANSWERS | VERIFIED AND WELL
DETAILED ANSWERS | PLUS RATIONALES | GUARANTEED PASS | LATEST EXAM UPDATE
Core Domains:
Navigation and Chart Plotting
Tides, Currents, and Water Levels
Meteorology and Weather Interpretation
Boat Handling and Maneuvering Under Power and Sail
Safety Equipment and Emergency Procedures
Maritime Regulations and COLREGS
Anchoring and Docking Techniques
Engine and Systems Maintenance
Voyage Planning and Decision-Making
Environmental and Ethical Stewardship
Introduction
This comprehensive examination is designed to rigorously assess the knowledge and practical skills
required for advanced coastal cruising. It evaluates a candidate's ability to integrate foundational
theory with applied seamanship, regulatory compliance, and ethical decision-making in a variety of
real-world scenarios. The exam is structured with multiple-choice questions and scenario-based
problems that emphasize critical thinking, situational awareness, and sound judgment. Success on this
exam demonstrates a professional-level competency in navigation, vessel operations, and safety
management, ensuring that the mariner is fully prepared for the challenges of coastal and offshore
passages.
SECTION ONE: QUESTIONS 1 – 100
1. What is the primary purpose of a secondary port in tidal calculations?
A. To provide a backup reference when the primary port's tide tables are unavailable
B. To correct tidal height and time data from a standard port for local conditions
C. To replace the need for standard port data entirely
D. To calculate the tidal stream rate in offshore areas
🟢 B. To correct tidal height and time data from a standard port for local conditions
🔴 Explanation: Secondary ports use differences in time and height from a standard or primary
port to provide accurate tidal predictions for locations where no direct observations are made. The
other options misinterpret the purpose of secondary port data.
,2. According to COLREGS Rule 5, what does the term "proper lookout" entail?
A. Using only radar and electronic systems to monitor traffic
B. Designating one crew member to watch for other vessels at all times
C. Using sight, hearing, and all available means to fully appraise the situation and risk of collision
D. Checking the horizon every 10 minutes for navigational hazards
🟢 C. Using sight, hearing, and all available means to fully appraise the situation and risk of
collision
🔴 Explanation: Rule 5 requires that a proper lookout be maintained by all available means,
including sight and hearing, to make a full appraisal of the situation. It is not limited to radar or a
single crew member. Continuous vigilance is required.
3. What is the "height of tide" at a given location?
A. The vertical distance from the seabed to the water's surface
B. The level of the water surface relative to a chart datum
C. The depth of water below the keel of a vessel
D. The difference between high water and low water
🟢 B. The level of the water surface relative to a chart datum
🔴 Explanation: Height of tide is the elevation of the water surface at a specific time, measured
against a chart datum (such as Mean Lower Low Water). It does not define total depth, seabed
distance, or tidal range.
4. In the event of a man overboard, which is the correct first action when under power?
A. Turn the vessel hard to port to bring the stern away from the person
B. Immediately throw a life ring and press the MOB button on the GPS
C. Stop the engine and turn the wheel toward the side the person fell over
D. Sound five short blasts on the horn and assign a spotter
🟢 C. Stop the engine and turn the wheel toward the side the person fell over
🔴 Explanation: The first critical action is to stop the engine to prevent propeller injury and turn the
wheel toward the side the person fell over (the "Williamson turn" variant or immediate turn) to
begin the recovery maneuver. While throwing a life ring is important, stopping the engine is the
immediate priority for safety.
5. Which of the following best describes a "backing wind" in the context of coastal meteorology?
A. A wind that rotates clockwise with height
B. A wind that rotates counter-clockwise (anti-clockwise) with height
C. A wind that reverses direction by 180 degrees
D. A wind that increases in speed due to coastal convergence
, 🟢 B. A wind that rotates counter-clockwise (anti-clockwise) with height
🔴 Explanation: A backing wind is a wind that shifts direction counter-clockwise (anti-clockwise)
with height, typically associated with an approaching cold front. A veering wind rotates clockwise. It
is not simply a reversal of direction or coastal convergence.
6. A vessel is showing a black diamond shape during the day. What does this signal indicate?
A. The vessel is at anchor and not under command
B. The vessel is restricted in its ability to maneuver
C. The vessel is engaged in towing and the tow is less than 200 meters
D. The vessel is aground
🟢 D. The vessel is aground
🔴 Explanation: A black diamond shape displayed in the forepart is the day signal for a vessel
aground. A black ball indicates at anchor, and a black cylinder indicates restricted in ability to
maneuver or not under command depending on other signals.
7. What is the effect of a following sea on a sailboat's helm?
A. It has no significant effect on the helm
B. It tends to create a lee helm due to wave action from aft
C. It tends to create a weather helm due to increased wind pressure forward
D. It can cause the vessel to yaw and require constant helm correction
🟢 D. It can cause the vessel to yaw and require constant helm correction
🔴 Explanation: A following sea (waves overtaking from astern) can induce significant yaw and
cause the vessel to broach, requiring constant helm adjustments. It does not inherently create a
steady lee or weather helm, though the actual effect depends on the vessel design and wave
height.
8. When calculating a course to steer to allow for tidal drift, what must the navigator know?
A. The vessel's engine speed and fuel consumption
B. The rate and direction of the tidal stream and the desired speed over ground
C. The magnetic variation and deviation for the area
D. The depth of water and the vessel's draft
🟢 B. The rate and direction of the tidal stream and the desired speed over ground
🔴 Explanation: To compute the course to steer, the navigator must know the tidal stream (rate and
direction) and the desired speed over ground (SOG). This allows the construction of a vector
triangle. Engine speed and variation are also required but are not the primary missing data from
the options.
DETAILED ANSWERS | PLUS RATIONALES | GUARANTEED PASS | LATEST EXAM UPDATE
Core Domains:
Navigation and Chart Plotting
Tides, Currents, and Water Levels
Meteorology and Weather Interpretation
Boat Handling and Maneuvering Under Power and Sail
Safety Equipment and Emergency Procedures
Maritime Regulations and COLREGS
Anchoring and Docking Techniques
Engine and Systems Maintenance
Voyage Planning and Decision-Making
Environmental and Ethical Stewardship
Introduction
This comprehensive examination is designed to rigorously assess the knowledge and practical skills
required for advanced coastal cruising. It evaluates a candidate's ability to integrate foundational
theory with applied seamanship, regulatory compliance, and ethical decision-making in a variety of
real-world scenarios. The exam is structured with multiple-choice questions and scenario-based
problems that emphasize critical thinking, situational awareness, and sound judgment. Success on this
exam demonstrates a professional-level competency in navigation, vessel operations, and safety
management, ensuring that the mariner is fully prepared for the challenges of coastal and offshore
passages.
SECTION ONE: QUESTIONS 1 – 100
1. What is the primary purpose of a secondary port in tidal calculations?
A. To provide a backup reference when the primary port's tide tables are unavailable
B. To correct tidal height and time data from a standard port for local conditions
C. To replace the need for standard port data entirely
D. To calculate the tidal stream rate in offshore areas
🟢 B. To correct tidal height and time data from a standard port for local conditions
🔴 Explanation: Secondary ports use differences in time and height from a standard or primary
port to provide accurate tidal predictions for locations where no direct observations are made. The
other options misinterpret the purpose of secondary port data.
,2. According to COLREGS Rule 5, what does the term "proper lookout" entail?
A. Using only radar and electronic systems to monitor traffic
B. Designating one crew member to watch for other vessels at all times
C. Using sight, hearing, and all available means to fully appraise the situation and risk of collision
D. Checking the horizon every 10 minutes for navigational hazards
🟢 C. Using sight, hearing, and all available means to fully appraise the situation and risk of
collision
🔴 Explanation: Rule 5 requires that a proper lookout be maintained by all available means,
including sight and hearing, to make a full appraisal of the situation. It is not limited to radar or a
single crew member. Continuous vigilance is required.
3. What is the "height of tide" at a given location?
A. The vertical distance from the seabed to the water's surface
B. The level of the water surface relative to a chart datum
C. The depth of water below the keel of a vessel
D. The difference between high water and low water
🟢 B. The level of the water surface relative to a chart datum
🔴 Explanation: Height of tide is the elevation of the water surface at a specific time, measured
against a chart datum (such as Mean Lower Low Water). It does not define total depth, seabed
distance, or tidal range.
4. In the event of a man overboard, which is the correct first action when under power?
A. Turn the vessel hard to port to bring the stern away from the person
B. Immediately throw a life ring and press the MOB button on the GPS
C. Stop the engine and turn the wheel toward the side the person fell over
D. Sound five short blasts on the horn and assign a spotter
🟢 C. Stop the engine and turn the wheel toward the side the person fell over
🔴 Explanation: The first critical action is to stop the engine to prevent propeller injury and turn the
wheel toward the side the person fell over (the "Williamson turn" variant or immediate turn) to
begin the recovery maneuver. While throwing a life ring is important, stopping the engine is the
immediate priority for safety.
5. Which of the following best describes a "backing wind" in the context of coastal meteorology?
A. A wind that rotates clockwise with height
B. A wind that rotates counter-clockwise (anti-clockwise) with height
C. A wind that reverses direction by 180 degrees
D. A wind that increases in speed due to coastal convergence
, 🟢 B. A wind that rotates counter-clockwise (anti-clockwise) with height
🔴 Explanation: A backing wind is a wind that shifts direction counter-clockwise (anti-clockwise)
with height, typically associated with an approaching cold front. A veering wind rotates clockwise. It
is not simply a reversal of direction or coastal convergence.
6. A vessel is showing a black diamond shape during the day. What does this signal indicate?
A. The vessel is at anchor and not under command
B. The vessel is restricted in its ability to maneuver
C. The vessel is engaged in towing and the tow is less than 200 meters
D. The vessel is aground
🟢 D. The vessel is aground
🔴 Explanation: A black diamond shape displayed in the forepart is the day signal for a vessel
aground. A black ball indicates at anchor, and a black cylinder indicates restricted in ability to
maneuver or not under command depending on other signals.
7. What is the effect of a following sea on a sailboat's helm?
A. It has no significant effect on the helm
B. It tends to create a lee helm due to wave action from aft
C. It tends to create a weather helm due to increased wind pressure forward
D. It can cause the vessel to yaw and require constant helm correction
🟢 D. It can cause the vessel to yaw and require constant helm correction
🔴 Explanation: A following sea (waves overtaking from astern) can induce significant yaw and
cause the vessel to broach, requiring constant helm adjustments. It does not inherently create a
steady lee or weather helm, though the actual effect depends on the vessel design and wave
height.
8. When calculating a course to steer to allow for tidal drift, what must the navigator know?
A. The vessel's engine speed and fuel consumption
B. The rate and direction of the tidal stream and the desired speed over ground
C. The magnetic variation and deviation for the area
D. The depth of water and the vessel's draft
🟢 B. The rate and direction of the tidal stream and the desired speed over ground
🔴 Explanation: To compute the course to steer, the navigator must know the tidal stream (rate and
direction) and the desired speed over ground (SOG). This allows the construction of a vector
triangle. Engine speed and variation are also required but are not the primary missing data from
the options.
