ASA 114 – Cruising Catamaran Certification Exam | 100
Practice Questions with Bold Answers & Italic Explanations
| Catamaran Stability, Twin Engines, Anchoring Bridles,
Heavy Weather & Docking | 2026
Section 1: Catamaran Design & Terminology (Questions 1-15)
1. What is the primary source of stability for a cruising catamaran?
A) A deep, heavy ballast keel
B) Wide beam and hull separation
C) Water ballast tanks
D) A canting keel system
Answer: B
Unlike monohulls that rely on ballast, catamarans achieve stability primarily from their wide
beam and the separation of their two hulls . This "form stability" resists heeling.
2. What is the bridgedeck on a catamaran?
A) The keel structure connecting the two hulls underwater
B) The structure connecting the two hulls, housing the main cabin
C) The mast support system
D) The dinghy storage area
Answer: B
The bridgedeck is the central structure spanning between the hulls. It typically contains the
salon, galley, and navigation station and raises the living space above the waterline .
3. What is the purpose of daggerboards on a performance cruising catamaran?
A) To increase fuel capacity
B) To improve upwind performance by reducing leeway
C) To lower the center of gravity
D) To stabilize the boat at anchor
Answer: B
Daggerboards are retractable foils that provide lateral resistance when sailing upwind,
preventing the catamaran from sliding sideways (leeway). They are raised downwind to
reduce drag .
,4. What is a "Nacelle" on a catamaran?
A) A forward projection of the bridgedeck designed to soften wave impact
B) The compartment for the fuel tanks
C) The structure holding the mast
D) The aft swim platform
Answer: A
The nacelle is a streamlined forward extension of the bridgedeck that helps part waves and
reduces slamming, softening the ride in choppy conditions .
5. What is the function of a "Seagull Striker"?
A) A device to scare birds away from the mast
B) A reinforcement on the forward crossbeam to counter forestay tension
C) A type of anchor bridle
D) A safety harness attachment point
Answer: B
Located on the forward crossbeam, the seagull striker provides reinforcement to counter
the upward pull of the forestay, preventing the crossbeam from bending .
6. Why do most cruising catamarans lack a traditional fixed keel?
A) To reduce manufacturing costs
B) To allow access to shallow anchorages and reduce draft
C) To increase heeling for better performance
D) To meet racing regulations
Answer: B
* The shallow draft of catamarans (typically 3-5 feet) is a major advantage, allowing access
to bays and anchorages that are inaccessible to deep-keel monohulls .*
7. What is a "tripod rig" on a catamaran?
A) A rig with a forestay and shrouds but no backstay
B) A rig with three masts
C) A rig that uses only one shroud
D) A rig that cannot be reefed
Answer: A
Many catamarans use a tripod rig configuration where the mast is supported by a forestay
and shrouds (side supports), eliminating the need for a backstay. This allows for a fully
battened mainsail .
8. What is the advantage of twin rudders on a catamaran?
A) They increase top speed
B) They provide balanced steering control when one hull lifts
C) They eliminate the need for a wheel
, D) They reduce draft
Answer: B
Twin rudders ensure that at least one rudder remains fully submerged and effective even
when the boat heels or one hull lifts in a turn, maintaining steering control .
9. What is a typical cruising catamaran sail plan?
A) Traditional masthead sloop with overlapping genoa
B) Large fully-battened mainsail with a roller-furling jib
C) Gaff rig with square topsails
D) Ketch rig with multiple masts
Answer: B
Most cruising catamarans use a fractional rig with a large, fully-battened mainsail (often
with a square-top) and a roller-furling jib. The fully-battened mainsail provides good shape
control and reefing ease .
10. How does a catamaran's motion at sea differ from a monohull's?
A) More rolling and heeling
B) A stable but choppy motion with less heeling
C) Slower response to waves
D) Constant heeling even in light winds
Answer: B
* Catamarans have a snap-roll motion rather than a prolonged roll. They heel very little
(typically 5-10 degrees vs. 20-30 degrees for monohulls) but can experience more pitching
(hobby-horsing) in steep seas .*
11. What is "bridge deck slamming"?
A) The sound of waves hitting the mast
B) Waves striking the underside of the bridge deck
C) The anchor hitting the hull
D) The boom hitting the deck during a jibe
Answer: B
Bridge deck slamming occurs when the boat's motion causes the bottom of the bridge deck
to impact wave tops. It is uncomfortable and can cause structural stress. Higher bridge deck
clearance reduces this .
12. What causes "hobby-horsing" on a catamaran?
A) Excessive heel
B) Excessive weight in the bows combined with steep seas
C) Over-trimmed sails
D) A fouled propeller
Answer: B
Practice Questions with Bold Answers & Italic Explanations
| Catamaran Stability, Twin Engines, Anchoring Bridles,
Heavy Weather & Docking | 2026
Section 1: Catamaran Design & Terminology (Questions 1-15)
1. What is the primary source of stability for a cruising catamaran?
A) A deep, heavy ballast keel
B) Wide beam and hull separation
C) Water ballast tanks
D) A canting keel system
Answer: B
Unlike monohulls that rely on ballast, catamarans achieve stability primarily from their wide
beam and the separation of their two hulls . This "form stability" resists heeling.
2. What is the bridgedeck on a catamaran?
A) The keel structure connecting the two hulls underwater
B) The structure connecting the two hulls, housing the main cabin
C) The mast support system
D) The dinghy storage area
Answer: B
The bridgedeck is the central structure spanning between the hulls. It typically contains the
salon, galley, and navigation station and raises the living space above the waterline .
3. What is the purpose of daggerboards on a performance cruising catamaran?
A) To increase fuel capacity
B) To improve upwind performance by reducing leeway
C) To lower the center of gravity
D) To stabilize the boat at anchor
Answer: B
Daggerboards are retractable foils that provide lateral resistance when sailing upwind,
preventing the catamaran from sliding sideways (leeway). They are raised downwind to
reduce drag .
,4. What is a "Nacelle" on a catamaran?
A) A forward projection of the bridgedeck designed to soften wave impact
B) The compartment for the fuel tanks
C) The structure holding the mast
D) The aft swim platform
Answer: A
The nacelle is a streamlined forward extension of the bridgedeck that helps part waves and
reduces slamming, softening the ride in choppy conditions .
5. What is the function of a "Seagull Striker"?
A) A device to scare birds away from the mast
B) A reinforcement on the forward crossbeam to counter forestay tension
C) A type of anchor bridle
D) A safety harness attachment point
Answer: B
Located on the forward crossbeam, the seagull striker provides reinforcement to counter
the upward pull of the forestay, preventing the crossbeam from bending .
6. Why do most cruising catamarans lack a traditional fixed keel?
A) To reduce manufacturing costs
B) To allow access to shallow anchorages and reduce draft
C) To increase heeling for better performance
D) To meet racing regulations
Answer: B
* The shallow draft of catamarans (typically 3-5 feet) is a major advantage, allowing access
to bays and anchorages that are inaccessible to deep-keel monohulls .*
7. What is a "tripod rig" on a catamaran?
A) A rig with a forestay and shrouds but no backstay
B) A rig with three masts
C) A rig that uses only one shroud
D) A rig that cannot be reefed
Answer: A
Many catamarans use a tripod rig configuration where the mast is supported by a forestay
and shrouds (side supports), eliminating the need for a backstay. This allows for a fully
battened mainsail .
8. What is the advantage of twin rudders on a catamaran?
A) They increase top speed
B) They provide balanced steering control when one hull lifts
C) They eliminate the need for a wheel
, D) They reduce draft
Answer: B
Twin rudders ensure that at least one rudder remains fully submerged and effective even
when the boat heels or one hull lifts in a turn, maintaining steering control .
9. What is a typical cruising catamaran sail plan?
A) Traditional masthead sloop with overlapping genoa
B) Large fully-battened mainsail with a roller-furling jib
C) Gaff rig with square topsails
D) Ketch rig with multiple masts
Answer: B
Most cruising catamarans use a fractional rig with a large, fully-battened mainsail (often
with a square-top) and a roller-furling jib. The fully-battened mainsail provides good shape
control and reefing ease .
10. How does a catamaran's motion at sea differ from a monohull's?
A) More rolling and heeling
B) A stable but choppy motion with less heeling
C) Slower response to waves
D) Constant heeling even in light winds
Answer: B
* Catamarans have a snap-roll motion rather than a prolonged roll. They heel very little
(typically 5-10 degrees vs. 20-30 degrees for monohulls) but can experience more pitching
(hobby-horsing) in steep seas .*
11. What is "bridge deck slamming"?
A) The sound of waves hitting the mast
B) Waves striking the underside of the bridge deck
C) The anchor hitting the hull
D) The boom hitting the deck during a jibe
Answer: B
Bridge deck slamming occurs when the boat's motion causes the bottom of the bridge deck
to impact wave tops. It is uncomfortable and can cause structural stress. Higher bridge deck
clearance reduces this .
12. What causes "hobby-horsing" on a catamaran?
A) Excessive heel
B) Excessive weight in the bows combined with steep seas
C) Over-trimmed sails
D) A fouled propeller
Answer: B
