more options with a yawl or ketch
Here are some other interesting options with yawls and ketches I would like to add to the other responses on this subject.1) The yawl/ketch can always be sailed as though it were single masted, with mainsail and jib only - keeping the mechanics simple as needed or desired . . .2) A yawl/ketch can keep its mizzensail up when at anchor (when cruising but with crew on board, please) thereby keeping the boat headed steadily in to the wind and less subject to swinging on the anchor.3) A yawl/ketch can be handled in ways a marconi rig can't, that is by dropping the main and using its mizzen and a bit of its roller-furled jib extended to maneuver using sails alone - by driving forward slowly with the sails drawing normally, or turning quickly by "backing" either or both sails appropriately, and I have even backed a boat under control into a slip under sail by using this method (I had a good crew, and the wind was in the right direction and at a suitable steady speed)4) A yawl/ketch, with proper heavy weather "jib and jigger", can handle gale and storm wind conditions with more options than with a single masted boat5) On a broad reach I have sailed with five sails up at the same time on yawls - spinnaker, fore staysail, mainsail, mizzen staysail, and mizzen - lots of laundry, lots of lines to tend - - - and it is always a special experience, perhaps not for everyone, but it is a real kick for many. I can keep visiting crew members busy tending lots of sails and it has always been a positive experience they never forget.Some downsides - - - 6) Dodgers and biminis on yawl/ketches typically have to be collapsible since the mizzen staysail cuts across the dodger site, and a bimini can't fold back if the main boom is end sheeted . . . wind generators can't be mounted on the stern rail on a "mast" given that the mizzen is there . . . . many two masted rigs can't have dinghy davits over the stern . . . 7) Ratings for multi-class racing were changed in the 70's to reduce the sail area advantages of yawls and ketches - so two masted boats now actually have a disadvantage in this department: and, frankly, in my experience, yawls and ketches 'typically' do not point quite as well as well tuned sloops.