Steam turbine unit

A steam turbine unit comprising:

• a steam turbine including a rotor extending in an axial direction in which a central axis extends, a casing covering the rotor from an outside in a radial direction with respect to the central axis, and a bearing portion fixed to the casing and rotatably supporting the rotor with respect to the casing;
• a base plate supporting the steam turbine from below in a vertical direction and fixed on a base;
• and
• a plurality of fixing members arranged apart from each other and configured to fix the base plate and the base, wherein
• the casing includes a steam exhaust port facing downward in the vertical direction and configured to discharge steam to an outside,
• the bearing portion includes a steam exhaust side bearing portion arranged at a position close to the steam exhaust port in the axial direction,
• the base plate supports the steam exhaust side bearing portion, and
• of the plurality of fixing members, two of the fixing members closest in a width direction orthogonal to the vertical direction and the axial direction are arranged at positions shifted in the axial direction with respect to a region supporting the steam exhaust side bearing portion in the base plate.