Lake Toba is one of the largest lakes in the world that has been approved by Unesco as a world heritage Geopark in 2020. As a geopark, Lake Toba has many tourist objects and destinations (ODTW) that combine nature and buildings, which will look even more beautiful when enjoyed from above. boat. One of the efforts to increase tourist attraction on Lake Toba is through the provision of cruise ships. The problem is that the cruise ship must be built on Lake Toba because Lake Toba is at an altitude of 905 meters above sea level. For this reason, it is necessary to study the potential number of tourists who are expected to use cruise ships and an estimate of the type and size of the ship that is made as to the basis for the feasibility of providing cruises on Lake Toba. By utilizing time-series data on tourist visits, and distributing questionnaires to tourists as well as purposive interviews to some tourism service entrepreneurs, and benefit-cost analysis (BCA) methods, it can be concluded that the potential for cruise ship passengers on Lake Toba is very large and feasible to provide a cruise ship, but still needed some improvements, especially regarding the issue of security and shipping safety and port facilities repairs.

Keywords : Tourism Objects and Destinations, Water Tourism, Cruises, AloS, BCA.