The Tallinn-based Infortar investment company has taken delivery of Optimus, which will be chartered to Eesti Gaas' Elenger.
The 100 m-long, 1A ice-class ship features two type-C tanks for storing up to 6,000 m3 of liquefied natural gas (LNG).
Optimus was constructed at DAMEN Shipyards Yichang and completed her gas trials at the DAMEN Verolme Rotterdam ship repair yard.
Optimus will replace the tank trucks used for bunkering Tallink & Silja Line's Megastar ferry and bunker the shipping company's MyStar set to enter traffic in spring 2022.
Elenger also has pre-agreements for the supply of LNG to other ship owners and operators.
The construction of Optimus was backed through the EU Connecting Europe Facility.