Which line would NOT be used in handling a mainsail?
Official USCG Answer & Rule Citation
Correct Answer: Option C — Uphaul
A mainsail is controlled by halyards for hoisting, sheets for trimming, and downhauls for tensioning the luff. An 'uphaul' is not standard terminology in sail handling; it is typically associated with rigging for spinnaker poles or specific deck gear, but it serves no functional purpose for a mainsail.
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