NOVELTY - The unit (1) has a turbine to power a generator in the unit, where the unit permits force applied by water current along direction of flow to orient an axis of the turbine along the direction of flow without moving a base and comprises stabilizing fins on the generator or turbine. The fins are tethered tail fins connected to the unit downstream from a flexible shaft. The fins are a cowling about the turbine. An electrical cabling transmits electrical power generated by the generator to an electrical interconnection in the base.    USE - Turbine unit for generating electrical power for underwater installations for purposes utilized in low speed environment e.g. windmills and water mills. Uses include but are not limited to military purposes, defense and security purposes, oceanography purposes, monitoring purposes and oil gas exploration purposes.    ADVANTAGE - The unit is designed for easy deployment in areas, and can generate power with a common turbine system regardless of changes along flow direction in a reliable manner. The unit allows a generator nose-cone to be hydrodynamically designed to improve a flow around the generator and increase a power output of the turbine. The unit is connected to an anchor point on the seabed by a flexible hollow support shaft, which permits the turbine to be naturally aligned with maximum resistance to flow, thus improving performance over existing systems along variable direction and low flow underwater environment. The fins on a flexible support shaft improve reorientation of the turbine. The turbine constructed with integrated gearing can improve rotational speed and efficiency. The unit enhances development of stand-alone sub-sea systems for production from subsea wells at a forefront as an industry looks toward reserves in deepwater and arctic environment. The stand-alone sub-sea systems placed on or under the seabed reduce costly space requirements on platforms and are protected from harsh environmental conditions at a surface so as to rely on a high degree of automation or remote control from surface installations with less power and highly reliable with low maintenance.    DETAILED DESCRIPTION - The turbine unit is marginally buoyant. The generator is a water mill power generator and a 3-phase alternating current (AC) generator. The turbine is a horizontal axis turbine. An INDEPENDENT CLAIM is also included for a method for generating electricity in subsurface electronics.    DESCRIPTION OF DRAWING(S) - The drawing shows side, front and perspective views of a power generation unit.    Turbine unit (1)