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How To Jibe A Catamaran

           - by Stephen Cockcroft

Jibing is when you turn the boat away (bear away) from the wind and bring the stern across the wind. Unlike tacking where you turn toward the wind (head up) and bring the bow accross the wind which luffs the sails and takes all the power out of them, when jibing, the sails are powered up through the entire maneuver and thus more care and control is required.

Catamarans generally have a three piont rigging system which means there is no back stay,  this makes jibing a far more delicate maneuver on a catamaran than on monohulls which generally have a back stay and are thus far safer when jibing.

jibing catamaranWhen preparing to jibe a catamaran the preparation and proceedure are as follows

  • Centralize the traveller so that the main can be centralized
  • Before starting the turn (bearing away) begin sheeting the mainsheet in so that as you bear away the main is centralized, be sure that the main is sheeted in hard before the jibe.
  • The reason for sheeting the main in hard is twofold, when the main is back winded and slams over to the opposite tack the travel of the boom and sail is reduced to a minimum reducing the shock load to the rig, secondly, when the main is sheeted in hard it acts like a back stay supporting the rig from the impact of the jibe from the rear in the absence of a backstay.
  • Once the main has back winded and changed sides so that you are on the opposite tack, start to head up and at the same time release the main as fast as possible, this will ensure that you keep the power on as you go through the second part of the jibe.
  • Once the jib has back winded, release the windward jib sheet while tightening the leeward one until the jib has passed through the fore triangle and can be trimmed by the leeward sheet and the windward sheet can be released completely.
  • When jibing the jib always be careful to make sure it backwinds first and then control it so that it does not fly forward of the forestay. If you let it fly too early and it flies free forward of the forestay then you will have to use the leeward sheet to pull it all the way back around the forestay which is not good for the sail or the nerves.

*It is preferable to tack a cruising catamaran instead of jibing and not recommended at all in strong winds or bad conditions.

Comments (1)

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I was tought that when jibing , one should cleat the sail straight- lock it (parallel sail with the boat) right before passing through the wind,. That is to avoid the accidental gybe and flipping the cat. As one passes through the wind, moves to...

I was tought that when jibing , one should cleat the sail straight- lock it (parallel sail with the boat) right before passing through the wind,. That is to avoid the accidental gybe and flipping the cat. As one passes through the wind, moves to the other side pushing on the rudder and making the turn. Then picking up wind from the new windward side releasing the locked sheet of the sail and and further trimming sail as one picked up speed.

Can you please comment?

Thank you so much.

John

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