Marine current turbine platform with faired spar

A marine current turbine system for converting current flow into electricity comprising:

• a floating spar platform comprising a nacelle at a bottom end, a faired spar at a midsection, and a deckhouse at a top end;
• means for mooring the floating spar platform to a bottom of a marine environment comprising a nacelle attachment point and a spreader disposed on the deckhouse, wherein the nacelle attachment point and the spreader comprise outer end connection points for attaching one or more mooring lines;
• and
• a rotor comprising a plurality of blades operating within a rotor plane, wherein the nacelle attachment point and a horizontal center of the spreader are disposed within a vertical plane defined by a vertical axis of the floating spar platform and a rotation axis of the rotor, the deckhouse is configured to provide buoyancy and is at least partially submerged during operation of the rotor to convert current flow into electricity, and the faired spar and the deckhouse provide maintenance access to the rotor.