1) Early leader in a race 2) Example 3) Exemplar 4) Good example 5) Horse that shows the way 6) Leader 7) Leader in a field 8) Leader of the pack 9) Missing ship 10) Model 11) Pacemaker 12) Person in front 1) Hare 2) Leader 3) Pacemaker 4) Pacer 
[fishing vessel] The F/V Pacesetter was a 127 ft, steel hulled, Bering Sea crab boat, launched in 1976 as Priscilla Ann, in 1979 It was then renamed as Coastal Glacier. It was then Acquired by Matt Pope and Dale Lindsay and Renamed `Pacesetter`. Pacesetter was reported missing in 1996, by the Seventeenth district US Coast Guard of Kodiak Al...
The horse that is running in front (on the lead).
pacemaker noun a leading instance in its field; `the new policy will be a pacesetter in community relations`