a 28-foot catamaran has the space of a 36-foot monohull, but still usually with a wider main saloon, owing to the width of the sailboat.
The extra width is an advantage in interior space, but not in mooring, as catamarans are often charge 50 to 100% more than monohulls when moored in a marina – no problem with a small one, of course.
There are other problems with catamaran sailboats. They do not heel, and so you don't have the same warning that the wind is getting too strong, and can capsize easily. Not such a problem with a small boat, but even there, getting a capsized catamaran upright os not easy.
Also, as they are fast, larger catamaran are prone to pitch-poling – digging the bow in and turning right over forwards into the wave. In addition, if the bottom of the main cabin area is flat, the waves crash up against it, reducing speed. On some cruising catamarans, there is a third dummy bow in the middle, which normally rides above the waves, but in heavy seas, improves the way the boat rides.
Catamaran do not have quite such a smooth ride as monohulls, partly because they do not heel, but also because they are short compared to their width. As a result they pitch a lot, especially when sailing into waves.
Catamaran are best for racing and coastal cruising. If you want that space in a long-distance cruiser, then you must be prepared to reduce sail early, and if the wind gets strong, to motor.
