Of all tickets sold by TS Laevad, the Tallinna Sadam subsidiary operating ferries between the mainland and Estonia's large western islands, the share of electronic tickets on the Rohukula-Heltermaa route to Hiiumaa, Estonia's second biggest island, reached 74 percent and that on the Virtsu-Kuivastu ferry route between the mainland and the islands of Muhu and Saaremaa 56 percent.