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1. Advanced Cruising & Seamanship Concepts (Catamaran-Specific)
Q1. The primary source of stability on a cruising catamaran is:
A) Ballast keel
B) Form stability from wide beam and twin hulls
C) Deep daggerboards
D) Heavy displacement
Answer: B
Rationale: Cruising catamarans derive stability from the buoyancy of widely separated hulls
(form stability), not a weighted keel. This allows high initial stability but requires vigilance to avoid
overloading, as there is no "righting moment" once past the point of no return.
Q2. Compared to a monohull of similar length, a cruising catamaran typically has:
A) More wetted surface and slower speeds
B) Less living space and more heel
C) Greater initial stability and more interior volume
D) Deeper draft and better windward performance
Answer: C
Rationale: Catamarans offer immense form stability (little to no heel) and spacious
salons/bridgedecks, making them ideal for cruising comfort, but they have shoal draft and
different pointing ability.
Q3. "Bridgedeck clearance" on a catamaran refers to:
A) The height of the cockpit floor
B) The vertical distance between the waterline and the bottom of the bridgedeck
C) The gap between the two daggerboards
D) The distance from the mast to the forestay
, Answer: B
Rationale: Higher bridgedeck clearance reduces slamming in waves. Modern cruising cats
prioritize 30+ inches to minimize pounding in head seas.
Q4. Overloading a catamaran primarily affects:
A) Heel angle
B) Risk of capsize and bridgedeck slamming
C) Windward performance only
D) Engine fuel consumption
Answer: B
Rationale: Excess weight lowers the hulls, reduces clearance, increases slamming, and moves
the boat closer to the stability limit. Proper weight distribution (heavier items low and centered) is
critical.
Q5. A "nacelle" on some catamarans is:
A) A forward projection that reduces wave impact
B) The cockpit enclosure
C) The trampoline area
D) The steering pedestal
Answer: A
Rationale: The nacelle extends the bridgedeck forward to deflect waves and reduce
pitching/slam.
2. Heavy Weather Sailing
Q6. In heavy weather, the first indication that a cruising catamaran is overpowered is often:
A) Excessive heel
B) One bow stuffing repeatedly
C) Rounding up into the wind
D) Lee helm
Answer: B
Rationale: Catamarans do not heel significantly; instead, the leeward bow digs in ("stuffing"),
increasing pitchpoling risk. Reduce sail early.
Q7. The greatest heavy-weather danger for a cruising catamaran (non-racing) is: