Slipstream

Slipstream Drive, sometimes known as Quantum Wave Drive is an FTL technology that creates a quantum waveform in space that draws the ship down into what is known as "Slip Space". This is a region of space below what is commonly referred to as subspace, that is a much shorter, smaller area of space than even subspace, allowing for much faster rates of flight than common subspace dependent drives, such as Warp Drive. Once a ship enters slipspace, it's just a matter of creating a quantum wave, which is sorta like an ocean wave made of energy, that then propels the ship forward at faster than light speeds. To exit Slip Space a ship need merely power down its Slipstream Drive, after which the ship will naturally rise up through the planes of subspace and gently return to normal space.