ASA Sail Trim & Performance Flashcards
6 cards from real ASA practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 ASA Sail Trim & Performance flashcards as text
What is the primary purpose of adjusting the traveler on a sailboat?
Answer: To control the boom's athwartship position and mainsail angle
The traveler controls the lateral position of the boom, allowing the skipper to fine-tune the mainsail's angle of attack relative to the wind.
When sailing upwind, what does 'easing the outhaul' do to the mainsail?
Answer: Adds draft (depth) to the lower portion of the sail
Easing the outhaul reduces tension along the foot of the mainsail, adding curvature (draft) to the lower section for more power in light air.
What is the function of the cunningham on a mainsail?
Answer: Controls luff tension to move the draft position forward or aft
The cunningham applies downward tension on the luff, moving the sail's draft forward, which is most useful in heavy air to depower the sail.
In light air, how should the jib leads typically be positioned?
Answer: Forward and inboard to create a fuller sail shape
Moving jib leads forward and inboard in light air closes the leech and foot, creating a fuller, more powerful sail shape suited to low wind speeds.
What does 'telltales flowing on both sides of the jib' indicate?
Answer: The sail is properly trimmed with smooth airflow on both sides
When telltales flow horizontally on both the windward and leeward sides, the sail is properly trimmed with attached airflow on both surfaces.
When is the boom vang most useful?
Answer: Downwind to prevent the boom from rising and the sail from twisting
The boom vang prevents the boom from lifting when sailing off the wind, reducing mainsail twist and keeping the sail's draft consistent from top to bottom.