ASA ASA Sail Trim & Performance

Question 1

What is the primary purpose of adjusting the traveler on a sailboat?

Accepted Answer

To control the boom's athwartship position and mainsail angle

Answer

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.

Question 2

When sailing upwind, what does 'easing the outhaul' do to the mainsail?

Accepted Answer

Adds draft (depth) to the lower portion of the sail

Answer

Easing the outhaul reduces tension along the foot of the mainsail, adding curvature (draft) to the lower section for more power in light air.

Question 3

What is the function of the cunningham on a mainsail?

Accepted Answer

Controls luff tension to move the draft position forward or aft

Answer

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.

Question 4

In light air, how should the jib leads typically be positioned?

Accepted Answer

Forward and inboard to create a fuller sail shape

Answer

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.

Question 5

What does 'telltales flowing on both sides of the jib' indicate?

Accepted Answer

The sail is properly trimmed with smooth airflow on both sides

Answer

When telltales flow horizontally on both the windward and leeward sides, the sail is properly trimmed with attached airflow on both surfaces.

(ASA) American Sailing Association Certifications Practice Test