Gennaker

A gennaker - including blister, Flasher or MPS (Multi-Purpose - spinnaker) - is a large, bulbous, asymmetrical triangular headsail, which is made ​​of relatively lightweight canvas and is suitable for space - to partial wind courses.

The term " gennaker " is a portmanteau; the composition of Genoa and Spinnaker describes the characteristics of this sail.

The sail will be a flying round the luff of the forestay. The neck ( the front lower corner) is struck for trimming with a tackle or solid with a strop on a special bow fitting or on an extendable pole base forward. The head is mounted on a special case spinnaker exiting the mast above the forestay fitting. The pods are attached to the clew. The Lee - sheet is to the stern of the ship and out there on a role. The windward sheet is required for the neck and is outward out around the headstay to the rear.

Gennaker are much easier to put in comparison with spinnakers, to drive, to trim, to jibe and recover. They are therefore used to cruising yachts like instead of a spinnaker sail as a good and effective for room to partial wind courses. Even easier to set and retrieve them are equipped with a " sock ", which works like a spinnaker.

Courses

Cheap sailing courses are gennaker downwind to partial wind courses due to their construction. If angeluvt about half wind addition, the luff is applied and the sail loses its effect. If dropped downwind, the sail enters the slipstream of the mainsail and collapses.

Trim

The luff is to always keep around. This rounding is controlled with the tackle on tack, if not available with the spinnaker halyard. Here, the leech should not touch the pulpit. The rounder the luff, the flatter the sail is (often incorrectly assessed ). The sheet is to be operated so that the luff always think of a bit in the middle.

The neck

In the neck of the head of the sail remains fixed while the clew outside travels around the forestay of the ship. So there are struck at the same time the larboard and starboard sheet. It is important to ensure that the long sheet does not fall into the water and run over.

Aerodynamics

The blister looks after the wing principle. See aerodynamics of the sail. At higher rates than some fast skiffs downwind reach extreme speeds of over 25 knots. On offshore catamarans trimarans and similar and sometimes even higher speeds are achieved, but also arise from the construction of the boats.