Triangular sail (3 letters)

The U.S.S. Constitution has three (5 letters)

"The fifth Beatle" (3 letters)

Crow's-nest site (4 letters)

Anchor position (5 letters)

Flag raiser (7 letters)

Amaze (3 letters)

Go back and forth (with) (4 letters)

Kingdom loser (4 letters)

Kind of gas (4 letters)

Train in the ring (4 letters)

Firm (3 letters)

Scores on a serve (4 letters)

Winging it? (5 letters)

Finger or finishing follower (4 letters)