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canoe sail sprit vs gaff?

Discussion in 'Canoe Sailing' started by Steven, Sep 19, 2005.

  1. Steven

    Steven Curious about Wooden Canoes

    I am reaching the final stages of my sailing canoe. I am caught in the dilemma of gaff vs sprit. I will have limited access to the masts and so will have to have rigging adapted to that. Which rig is the simplest? Less likely to "screw up"? Most forgiving? Stevenson felt that the sprit was not suitable in a canoe as it would be hard to control, but also dispensed with the gaff as being too heavy. With carbon fibre gaff and mast this is perhaps not such an issue any longer?

    Todd I have ordered your book so I am hoping to gleam the answer therein, but while I wait for it........?
     
  2. Todd Bradshaw

    Todd Bradshaw Sailmaker

    A spritsail is about the easiest to operate and most user-friendly rig that can be put on a small boat or canoe. If equipped with a brailing line (which when pulled, quickly squishes the sail and sprit up against the mast in a bundle) it's also the fastest to furl and/or deploy. The biggest drawback to them tends to be limited downwind performance with the sail hanging out to the side. The lower corner tends to curl inward, toward the hull because they have no boom, and you temporarily lose valuable wind-catching sail area. The addition of a simple sprit-boom the package will help support the bottom corner when sailing off the wind, but will prevent being able to brail the sail (unless you detatch the boom from the clew corner first - as you will learn, canoe sailing is all about compromises, it's just a matter of which ones you want to make.)

    Gaff sails, on the other hand, tend to be about as complex, technically intricate, unforgiving to rig and non-user-friendly as anything you can hang up there. Yes, they can certainly be used on a canoe and can work fine, but most of the people who use them do so because they enjoy playing with a lot of rigging. Canoe-sized gaff sails tend to be rather stiff due to the weights of available fabric. Getting one to set nicely can be quite tricky since the various halyards, lacing and fittings are all pulling on the cloth in different directions. They have a nice "salty" look which some folks desire, but the general opinion is that they're usually unnecessarilly complex. A better option in a four-sided sail might be something like a lugsail (either balanced lug or standing lug) which can have a very similar profile and look, but with more simple rigging.

    Left to right: Spritsail, Standing Lugsail, Chinese, Junk-style balanced lugsails, Tanbark (brown) balanced lugsails with striped spritsail and lateen-batwing hybrid. I don't seem to have a good photo of a gaff canoe sail handy since not many people order them. You can just barely see the brail line and brailing eyelet on the striped spritsail. It leads from the deck up to the masthead and out around the sail and sprit, surrounding the sail, and back to the mast. When you pull the line on deck it gathers the sail up against the mast. The weight of the line hanging there tends to put a small "dent" in the leech edge, but not enough to really harm performance. Pulling the line and brailing the sail against the mast (or letting it go to unfurl the sail) only takes a couple of seconds, so it can be a handy thing for launching, landing, etc.
     

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    Last edited: Sep 19, 2005
  3. Rick Clark

    Rick Clark New Member

    Boom

    Todd I have played with the boom on my sprit rig by lowering it to the heel or the bottom of the luff of the sail and I use a haul down to hold it there just 1/4" rope. Down wind worked real good, I might build a twin to it to balance it out. I tried a small jib but did not like it.
     
  4. Todd Bradshaw

    Todd Bradshaw Sailmaker

    Twin-sailed rigs tend to be some of the more interesting to sail. They can be fairly complex until you get the hang of having to manage both at once, but in addition to adding power, they also add some very interesting steering possibilities by simply adjusting the relationships between the two sails.

    They're also pretty. This is the latest twin set that I built and what a great photo. The boat is an Iain Oughtred designed Macgregor canoe, glued lapstrake and built to 15'8" long by it's owner Thomas Moen who did a great job. I suspect it really turns heads at the launch ramp! It's really hard to look at the photo without thinking "I want one of those!"
     

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