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The gennaker

9 February 2025 · 19 min · 8K views

What this video covers

The gennaker serves as an asymmetrical spinnaker designed for reaching and broad reaching, typically between 90 and 150 degrees to the wind.1:49 Unlike a symmetrical spinnaker, the gennaker features three free-flying sides and does not require a spinnaker pole, making it suitable for shorthanded cruising.8:29 Constructed from lightweight, elastic nylon, the sail absorbs wind pressure during deployment to prevent tearing.6:06 Cruising gennakers are most effective in light to moderate winds, generally up to 11 or 12 knots; operation in winds approaching 20 knots requires an experienced crew.7:04 Deployment and recovery typically occur on a broad reach to keep the sail clear of the mast and rigging.12:06 Using a snuffer sock simplifies handling by keeping the sail contained during the hoist and douse.11:16 When using a sock, the crew must ensure the continuous control line remains free to prevent jamming.14:50 Without a sock, the gennaker is hoisted behind the headsail, which is then furled or lowered to allow the gennaker to fill.16:02 Proper trim involves adjusting the tack line and sheet to prevent the luff from collapsing or forming a "curl."18:33

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