How many sails does a modern ship have?

Most modern ships do not have sails, as they primarily rely on engines for propulsion. However, some vessels, like sailing yachts and certain tall ships, can have multiple sails—ranging from a few to over a dozen, depending on their design. Additionally, some modern ships are exploring hybrid propulsion systems that incorporate sails for increased efficiency. Overall, the number of sails on a ship varies significantly based on its type and purpose.