Re: In Mast Furling

Martin Birkhoff

Hi Laurens,

1. Until today, we had no problems furling and unfurling the main and mizzen, no matter which angle to the wind the boat was facing and how strong the wind was.

2. We had these concerns too. However, there is enough room in the mast. When fully furled, the mainsail leaves about 1.75 to 2 cm of space between the sail and the mast chamber measured at the bottom of the mast chamber. It should be noted that on Mago del Sur both the main foil and the mizzen foil have a diameter of 35 mm. You should explicitly point this out to Stade if you have a 40 mm profile for the main. In all cases it is an advantage if the foils are reinforced by an additional aluminum element which is inserted in the foil (available by Amel).

3. We cannot answer the question about differences. The old sails had lost their battens and their leeches and aft parts including the leech genoa were no longer standing. We changed all sails at the same time so we could not recognize which effects were caused by the genoa and which by main and mizzen. I beg your pardon, we cannot make a reliable comparison.

Both the main and the mizzen are equipped with a leech line, which is usually not necessary. (This is different with the gennua, where we have to use it regularly).

5. The negative effects are

  •         The sails are more expensive.
  •         It takes a lot more work to take down the sails, as it is not easy to get the long battens out. At the jetty, we always take the battens out completely and disassemble them into their parts when they are lying on the jetty.
  • If the halyard comes off the sail, you have a problem because the long battens prevent the sail from sinking down completely or from being pulled down. You then have to pull the battens out part by part, which requires a lot of work with the sagged sail. It is therefore important that the halyard and the knot at the head of the sail are in perfect condition and reliable.


Mago del Sur - 54#40
La Línea, Spain

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