Production spanned 15 years, resulting in six different Rio lines, manufactured in varying quantities, but always distinguished by a luxurious finish, which has come to epitomize the Rio brand. The single-engine "Espera" was the first of the Rio boats, with the last being the twin-engine "Colorado," which was produced in three different models. One distinctive feature, shared by all the boats, is that the hull parts were crafted in our own shipyard, from one piece of multi-bonded and varnished mahogany wood, which were then attached to the frames. This construction method was a stark contrast to that of the competitors, who assembled prefabricated parts from external factories.