The Optimist is a small, single-handed sailing dinghy that is internationally the most popular boat for children to learn to sail in. They are great for beginners and small kids, and sailors usually continue to race them up to 15 years of age. 

The Optimist is recognized as an International Class by the International Sailing Federation.

Crew 1
Type Monohull
Construction Fiberglass
BEAM 1.39 m (4 ft 7 in)
Rig Sprit-Rigged
Keel (daggerboard or centreboard)
LOA 7 ft 9 in (2.36 m)
LWL 7 ft 2 in (2.18 m)
Beam 3 ft 8 in (1.12 m)
Draft 5 in (130 mm) / 2 ft 9 in (0.84 m)
Hull weight 77 lb (35 kg)
Mast height 7 ft 5 in (2.26 m)
Mainsail area 35 sq ft (3.3 m2)
D-PN 123.6
RYA PN 1646
Development Location International
X