The large, flappy, often multi-coloured, triangular, parachute-like sail that is flown out in front of the jib and forestay, attached to the mast and a spinnaker pole. The spinnaker works a bit like an umbrella on a windy day, you hoist it up at the front of the boat and it catches the wind and pulls you forwards. It is used when running downwind and when reaching across the wind, and it is stowed in the spinnaker chute when not in use. It gives you a lot of extra speed and acceleration and will definitely put a smile on your face in a decent wind

A large, light headsail used when a boat is sailing before the wind or on a reach

a balloon-like sail used on a downwind course.

A large triangular sail carried forward of the main mast on modern sailing ships. Used when running before the wind.

A large sail flown in front of the vessel while heading downwind.

large and usually triangular headsail; carried by a yacht as a headsail when running before the wind

a gigantic billowing sail made of light parachute material

a large, full-bellied sail that is only used when sailing downwind, to catch the maximum amount of wind

a large, light, often colorful sail for reaching and running downwind

a large parachute-shaped sail, usually made of nylon, which is used when sailing downwind

an easy sail to make from a 'kit' even for a 'beginner'

a special sail A sail is a surface intended to generate thrust by being placed in a wind

a type of sail fitted to a boat or ship to give it more speed

a very large sail that is only used when ailing downwind, to catch the maximum amount of wind

A symmetrically shaped three-cornered sail used to propel the boat downwind in strong winds.

A headsail spread out on the opposite side of the mast to the mainsail when running before the wind. The bargeman's spinnaker is his topmast staysail tacked at the mast case, and sheeted round the weather cross-tree.

A light, large, balloon-like sail which may be used when sailing off the wind.

Large light ballooning sails that are only attached to the spars at the corners. They are used when running or reaching, sailing downwind.

A large, triangular sail, most often symmetrical, flown from the mast in front of all other sails and the forestay. Used sailing downwind.

sail set forward of the forestay when wind is coming from astern or abeam

A large ballooning sail that is flown in front of the yacht when the wind comes from aft of abeam. Spinnakers are used when running or reaching, sailing downwind. Also called Kite or Chute. The head is pulled to the top of the mast, using the halyard; the tack is at the spinnaker pole, projecting it away from the yacht; and the clew is connected to the sheet, trimming the sail.

A light, very large three cornered sail set flying forward of all fore stays. Used on racing yachts when running the wind.

A large, billowing, often colourful sail used to obtain greater boat speed during downwind sailing, usually set in front or instead of the jib and carried by the 470, 49er and Soling Olympic classes.

A very large lightweight sail used when running or on a broad reach.

a large, light sail used in downward sailing

A large and often brightly coloured headsail that is used when sailing downwind.

a large, light sail used in downwind sailing

A lightweight, three-cornered balloon type sail used when sailing downwind.

An extremely large, lightweight, balloon-shaped piece of sailcloth frequently trailed in the water off the bow in a big bundle to slow the boat down.

The large lightweight sail used when going down wind

sail loosed in front of the ship's bow when running directly with the wind.