ASA 118 DOCKING ENDORSEMENT EXAM
QUESTIONS AND ANSWERS WITH
RATIONALES
Question 1: When approaching a dock in a sailboat under power with a
moderate crosswind blowing from the starboard side, which technique is most
effective for maintaining precise control and minimizing the risk of being
blown off the dock before securing lines?
A. Approach at higher speed to overcome the wind effect and then reverse hard
B. Approach at a shallow angle while using short bursts of reverse to control speed
and position
C. Approach beam-to the dock and rely solely on the wind to push the boat
alongside
D. Approach from leeward at a steep angle and use the engine only in forward
CORRECT ANSWER: B. Approach at a shallow angle while using short bursts of
reverse to control speed and position
Rationale: A shallow-angle approach combined with controlled reverse bursts allows
the helmsman to counteract the crosswind drift while keeping the boat under
precise control, reducing the chance of being blown clear of the dock before lines
can be secured.
Question 2: In a situation where a sailboat experiences significant prop walk to
port when reversing, what is the recommended initial docking strategy when
the dock is on the starboard side and a light wind is present from ahead?
A. Approach the dock starboard-side-to using only forward gear and spring lines
B. Approach the dock port-side-to so that the prop walk assists in swinging the
stern toward the dock
C. Make a high-speed approach and rely on the wind to stop the boat
D. Use only the rudder without engine power once near the dock
CORRECT ANSWER: B. Approach the dock port-side-to so that the prop walk
assists in swinging the stern toward the dock
Rationale: Prop walk to port in reverse means the stern will tend to move to port; by
approaching port-side-to, this natural tendency helps bring the stern alongside the
dock efficiently when reverse is applied.
Question 3: When docking a single-engine sailboat in a strong current flowing
parallel to the dock and against the boat’s approach direction, which method
provides the greatest control?
A. Approach against the current at reduced throttle while using the current to slow
the boat naturally
B. Approach with the current and use full reverse to stop
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,C. Approach beam-to the current and rely on the wind alone
D. Make a down-current approach at high speed and throw lines quickly
CORRECT ANSWER: A. Approach against the current at reduced throttle while
using the current to slow the boat naturally
Rationale: Approaching against the current allows the helmsman to use reduced
throttle for precise speed control; the opposing current assists in slowing the boat
without requiring heavy use of reverse, improving overall maneuverability.
Question 4: During a docking maneuver in light wind with no current, the
preferred use of a forward spring line once the bow is near the dock is to:
A. Pull the boat forward along the dock after securing the spring
B. Hold the boat in position while the engine is used in reverse to bring the stern
alongside
C. Allow the boat to drift freely until all lines are secured
D. Secure only the stern line first and ignore the spring
CORRECT ANSWER: B. Hold the boat in position while the engine is used in
reverse to bring the stern alongside
Rationale: A properly set forward spring prevents the boat from moving forward
and allows controlled use of reverse thrust to pivot the stern toward the dock
without the boat surging ahead.
Question 5: When preparing to leave a dock where the boat is secured
starboard-side-to with a strong wind blowing onto the dock, which sequence
of line handling and engine use is safest?
A. Cast off all lines simultaneously and motor away at full throttle
B. Cast off the stern line first, then use reverse against a spring to pivot the stern
clear before casting off remaining lines
C. Cast off the bow line first and allow the wind to blow the boat clear
D. Leave all lines attached and attempt to motor sideways
CORRECT ANSWER: B. Cast off the stern line first, then use reverse against a
spring to pivot the stern clear before casting off remaining lines
Rationale: Using reverse against a spring pivots the stern away from the dock
against the wind, creating clearance so the boat can then motor safely clear without
being pressed back onto the dock.
Question 6: In a tight marina slip with limited maneuvering room and a
crosswind, the most reliable method for a single-screw sailboat to enter the
slip is to:
A. Enter at high speed and stop with full reverse at the last moment
B. Use a combination of short forward and reverse bursts while employing spring
lines as soon as possible
C. Drift into the slip without engine power
D. Approach from the opposite direction and back into the slip at full speed
CORRECT ANSWER: B. Use a combination of short forward and reverse bursts
while employing spring lines as soon as possible
Rationale: Short controlled bursts of power combined with early use of spring lines
provide the precise positioning needed in confined spaces where continuous power
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,would risk overshooting or losing control in the crosswind.
Question 7: When docking under power in a situation with both wind and
current acting in the same direction parallel to the dock, the preferred
approach angle is:
A. A steep 60-degree angle to the dock
B. A shallow 20- to 30-degree angle while stemming the combined forces
C. A 90-degree beam-on approach
D. An approach from directly downwind and down-current
CORRECT ANSWER: B. A shallow 20- to 30-degree angle while stemming the
combined forces
Rationale: A shallow angle allows the boat to stem the combined wind and current
while still presenting the side of the hull to the dock for easy line handling, giving
the helmsman maximum control over speed and position.
Question 8: The primary purpose of a breast line when a sailboat is secured
alongside a dock is to:
A. Prevent the boat from moving forward or aft along the dock
B. Hold the boat tightly against the dock and prevent it from moving away
C. Act as a temporary spring during docking
D. Serve as the primary towing line
CORRECT ANSWER: B. Hold the boat tightly against the dock and prevent it
from moving away
Rationale: Breast lines run roughly perpendicular to the boat’s centerline and are
used to keep the boat snug against the dock, controlling lateral movement away
from the dock face.
Question 9: When using a midships spring line to assist in docking a sailboat
under power, the correct engine and rudder combination once the spring is
secured is typically:
A. Forward gear with rudder hard toward the dock
B. Reverse gear with rudder hard away from the dock
C. Neutral gear with no rudder input
D. Full throttle in either direction without regard to rudder
CORRECT ANSWER: A. Forward gear with rudder hard toward the dock
Rationale: With a midships spring secured, applying forward power with the rudder
toward the dock causes the stern to swing in while the spring holds the boat from
moving ahead, allowing controlled positioning alongside.
Question 10: In the presence of significant prop walk that moves the stern to
starboard in reverse, the preferred side for docking when the wind is light and
no current is present is:
A. Port-side-to so that prop walk helps the stern come in
B. Starboard-side-to so that prop walk helps the stern come in
C. Either side equally, ignoring prop walk
D. Only the bow to the dock without using the stern
CORRECT ANSWER: B. Starboard-side-to so that prop walk helps the stern
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, come in
Rationale: Prop walk that moves the stern to starboard in reverse assists in bringing
the stern alongside when the boat is oriented starboard-side-to the dock.
Question 11: When approaching a floating dock in a tidal area with a strong
current running, the safest initial action after securing the first line is to:
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QUESTIONS AND ANSWERS WITH
RATIONALES
Question 1: When approaching a dock in a sailboat under power with a
moderate crosswind blowing from the starboard side, which technique is most
effective for maintaining precise control and minimizing the risk of being
blown off the dock before securing lines?
A. Approach at higher speed to overcome the wind effect and then reverse hard
B. Approach at a shallow angle while using short bursts of reverse to control speed
and position
C. Approach beam-to the dock and rely solely on the wind to push the boat
alongside
D. Approach from leeward at a steep angle and use the engine only in forward
CORRECT ANSWER: B. Approach at a shallow angle while using short bursts of
reverse to control speed and position
Rationale: A shallow-angle approach combined with controlled reverse bursts allows
the helmsman to counteract the crosswind drift while keeping the boat under
precise control, reducing the chance of being blown clear of the dock before lines
can be secured.
Question 2: In a situation where a sailboat experiences significant prop walk to
port when reversing, what is the recommended initial docking strategy when
the dock is on the starboard side and a light wind is present from ahead?
A. Approach the dock starboard-side-to using only forward gear and spring lines
B. Approach the dock port-side-to so that the prop walk assists in swinging the
stern toward the dock
C. Make a high-speed approach and rely on the wind to stop the boat
D. Use only the rudder without engine power once near the dock
CORRECT ANSWER: B. Approach the dock port-side-to so that the prop walk
assists in swinging the stern toward the dock
Rationale: Prop walk to port in reverse means the stern will tend to move to port; by
approaching port-side-to, this natural tendency helps bring the stern alongside the
dock efficiently when reverse is applied.
Question 3: When docking a single-engine sailboat in a strong current flowing
parallel to the dock and against the boat’s approach direction, which method
provides the greatest control?
A. Approach against the current at reduced throttle while using the current to slow
the boat naturally
B. Approach with the current and use full reverse to stop
Page 1 of 52
,C. Approach beam-to the current and rely on the wind alone
D. Make a down-current approach at high speed and throw lines quickly
CORRECT ANSWER: A. Approach against the current at reduced throttle while
using the current to slow the boat naturally
Rationale: Approaching against the current allows the helmsman to use reduced
throttle for precise speed control; the opposing current assists in slowing the boat
without requiring heavy use of reverse, improving overall maneuverability.
Question 4: During a docking maneuver in light wind with no current, the
preferred use of a forward spring line once the bow is near the dock is to:
A. Pull the boat forward along the dock after securing the spring
B. Hold the boat in position while the engine is used in reverse to bring the stern
alongside
C. Allow the boat to drift freely until all lines are secured
D. Secure only the stern line first and ignore the spring
CORRECT ANSWER: B. Hold the boat in position while the engine is used in
reverse to bring the stern alongside
Rationale: A properly set forward spring prevents the boat from moving forward
and allows controlled use of reverse thrust to pivot the stern toward the dock
without the boat surging ahead.
Question 5: When preparing to leave a dock where the boat is secured
starboard-side-to with a strong wind blowing onto the dock, which sequence
of line handling and engine use is safest?
A. Cast off all lines simultaneously and motor away at full throttle
B. Cast off the stern line first, then use reverse against a spring to pivot the stern
clear before casting off remaining lines
C. Cast off the bow line first and allow the wind to blow the boat clear
D. Leave all lines attached and attempt to motor sideways
CORRECT ANSWER: B. Cast off the stern line first, then use reverse against a
spring to pivot the stern clear before casting off remaining lines
Rationale: Using reverse against a spring pivots the stern away from the dock
against the wind, creating clearance so the boat can then motor safely clear without
being pressed back onto the dock.
Question 6: In a tight marina slip with limited maneuvering room and a
crosswind, the most reliable method for a single-screw sailboat to enter the
slip is to:
A. Enter at high speed and stop with full reverse at the last moment
B. Use a combination of short forward and reverse bursts while employing spring
lines as soon as possible
C. Drift into the slip without engine power
D. Approach from the opposite direction and back into the slip at full speed
CORRECT ANSWER: B. Use a combination of short forward and reverse bursts
while employing spring lines as soon as possible
Rationale: Short controlled bursts of power combined with early use of spring lines
provide the precise positioning needed in confined spaces where continuous power
Page 2 of 52
,would risk overshooting or losing control in the crosswind.
Question 7: When docking under power in a situation with both wind and
current acting in the same direction parallel to the dock, the preferred
approach angle is:
A. A steep 60-degree angle to the dock
B. A shallow 20- to 30-degree angle while stemming the combined forces
C. A 90-degree beam-on approach
D. An approach from directly downwind and down-current
CORRECT ANSWER: B. A shallow 20- to 30-degree angle while stemming the
combined forces
Rationale: A shallow angle allows the boat to stem the combined wind and current
while still presenting the side of the hull to the dock for easy line handling, giving
the helmsman maximum control over speed and position.
Question 8: The primary purpose of a breast line when a sailboat is secured
alongside a dock is to:
A. Prevent the boat from moving forward or aft along the dock
B. Hold the boat tightly against the dock and prevent it from moving away
C. Act as a temporary spring during docking
D. Serve as the primary towing line
CORRECT ANSWER: B. Hold the boat tightly against the dock and prevent it
from moving away
Rationale: Breast lines run roughly perpendicular to the boat’s centerline and are
used to keep the boat snug against the dock, controlling lateral movement away
from the dock face.
Question 9: When using a midships spring line to assist in docking a sailboat
under power, the correct engine and rudder combination once the spring is
secured is typically:
A. Forward gear with rudder hard toward the dock
B. Reverse gear with rudder hard away from the dock
C. Neutral gear with no rudder input
D. Full throttle in either direction without regard to rudder
CORRECT ANSWER: A. Forward gear with rudder hard toward the dock
Rationale: With a midships spring secured, applying forward power with the rudder
toward the dock causes the stern to swing in while the spring holds the boat from
moving ahead, allowing controlled positioning alongside.
Question 10: In the presence of significant prop walk that moves the stern to
starboard in reverse, the preferred side for docking when the wind is light and
no current is present is:
A. Port-side-to so that prop walk helps the stern come in
B. Starboard-side-to so that prop walk helps the stern come in
C. Either side equally, ignoring prop walk
D. Only the bow to the dock without using the stern
CORRECT ANSWER: B. Starboard-side-to so that prop walk helps the stern
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, come in
Rationale: Prop walk that moves the stern to starboard in reverse assists in bringing
the stern alongside when the boat is oriented starboard-side-to the dock.
Question 11: When approaching a floating dock in a tidal area with a strong
current running, the safest initial action after securing the first line is to:
Page 4 of 52
