A "private catamaran" refers to a personal or exclusive boat that has two parallel hulls connected by a deck or platform. It means that the catamaran is owned and used exclusively by an individual or group, not open to the general public.
Enjoy a full day of fun in the sun, as you sail on your own private catamaran to the tiny island of Isla Mujeres. (cancun-discounts.com)
Your Cozumel Private Catamaran Snorkeling Adventure is fully equipped with a bathroom and drop down stairs which offer the easiest entrance into the water for passengers of all ages. (stmaartencruiseexcursions.com)