11 Steps to Raising Your Mast on a Corsair Trimaran

For all of you who are new to trimaran sailing, or for the avid Corsair Trimaran sailor who wants a brush-up, here is an awesome list of 11 steps on how to raise your mast on a Corsair Trimaran. You should print this out and keep it on your boat for reference!


  1. Untie the mast from all supports.

  2. Attach cap shrouds and forestay or roller furling headstay to the mast.
  3. Attach cap shrouds to the chainplates on the floats. If your boat has wire shrouds with Hifield levers take a bungie cord and hook one end to the upper toggle of the levers (the levers need to be in the open position. If you have an F-24 or early model Sprint with wire shrouds, go to the top of the turnbuckles), and the other to the daggerboard up and down lines on the deck so that the levers are held in a vertical position.

    Corsair 760

  4. Place the yoke onto the deck hinges and pin into place. The yoke should be facing the bow with its curved edge facing down so that it clears the halyard blocks on the mast step. Place the long ½” pin on the deck nearby so that you are ready to pin the mast into place. On 750s/760s attach the mast raising hinge to the deck and pull the long ½” pin out and lay on the deck nearby.
  5. Carefully walk the mast back until it is even with the yoke or mast raising hinge. Watch the spreaders on the aft beams as you go back so as not to bang them. Once in position, lift the yoke up to the mast, and place the ½” pin through the mast base, and put the clips in the pin so it cannot fall out. Be careful moving the mast at this point as it will become stern heavy, and want to lift up.
  6. Attach the mast raising wires to the pad eye on the mast, and to the anchor loops on the deck. If a roller furler is used, make sure it is above the wire. Insert the mast-raising pole into the yoke or into the mast and attach the mast raising wire to the pad eye on the mast. On the 31’s, as you lift the pole into position, it will get a little hard as the spreaders are lifted over the rollers on the aft mast support.

    Corsair 760

    Corsair 760
  7. Unroll enough line from the trailer winch to reach the pole. Attach the jib and screacher halyards to the winch line, pull them tight until the connection between the halyards and the winch line is just forward of the V in the mast raising pole, and cleat it off on the cleat at the base of the mast  (In the case of the 24, 750 or 760 with clutches on the mast: secure the halyards in their clutches and back them up on horn cleats or tie around the mast or the rope clutch itself for security). Take a final look around for potential snags on the shrouds, and make sure all is clear.
  8. If you raise the mast with the bowsprit in place, be aware that as the line wraps around the spool, it will not spool evenly, and can possibly jump off the spool if not caught soon enough. I recommend leaving the bowsprit out until the mast is up for this reason as well as the winch line will chafe a groove on the side of it. You are now ready to raise the mast.

    Corsair 760
  9. With one person at the winch, and one on deck by the mast base, begin cranking the winch. If the ground is not level, or there is a side wind, the mast will want to lean away from the center of the boat, so evaluate this possibility before getting too far and anticipate the direction it will want to go. The mast raising wires will prevent the mast from going too far, but it is best to be aware of this. The person on deck can help out here, by gently pulling on the correct mast wire. Continue raising the mast, the deck person is watching the shrouds to make sure there are no snags. If the mast starts to lean to one side a lot, or it gets suddenly hard to crank, STOP. Look around for something hanging up. Once the mast is part way up, NEVER WALK BENEATH THE MAST. If all is clear, continue to raise the mast until it rests on the mast step ball, and attach the forestay to the stem fitting. You can now release the trailer winch, and reattach it to the bow of the boat for launching. You can now remove the pole, yoke, and or mast raising hinge, and bungie cords from the levers if used.

    Corsair 760
  10. At this time, you can now string all the halyards through the mast base blocks and/or deck organizers and run them back to the cockpit and through the rope clutches if applicable, and attach the boom. Launch the boat, unfold the floats, tension the shroud levers if applicable, and remove the mast raising wires.

    Corsair 760
  11. To lower the mast, just reverse this procedure in the exact order written. The bungie cords are not needed for lowering the mast.

Always make safety the first priority in both raising, and lowering the mast. Neither process is very difficult. With some practice, it will become an easy thing to do. If at any time, any of the mast raising gear gets damaged, repair or replace it before doing another stepping of the mast, as it may have become too weak to perform its job safely. Always check and maintain all parts of your boat for the best performance possible.


Trailering a Corsair trimaran safely

Trailering a Corsair trimaran

Learn more about a Corsair 760 >>


Reach out if you have a specific question about Corsair trimarans, we're happy to help.
180 Marine is the fastest growing Corsair Marine Dealer in the U.S., owned and operated by Richard Allen and Leslie Gabriel, long time Corsair trimaran racers, day sailors and cruisers.

Contact: richard@180marine.com
Visit: 180marine.com

Comments for 11 Steps to Raising Your Mast on a Corsair Trimaran

Name: John Spurlock
Time: Thursday, December 4, 2014

There are two more items that should be addressed. First of all, and since the yoke travels in an arc, the halyards that run through the mast base turning blocks must be releases from any clutches. You will ruin the mast base turning blocks when you lower the mast if you do not give the halyards a lot of slack. Secondly, if you are securing the jib halyard to a cleat on the mast base (the one that is connected to the trailer winch), the halyard must be run inside the yoke to the cleat at the mast base.

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