Disappearing lyrics

Somewhere out on the ocean Across the waves, the rise and fall Deep beyond imagination Some kind of madness, I don't know Every time I see that ship go out It feels like everything's complete But somebody somewhere is waiting Some other ocean at her feet Na-na-na-na-na-na Na-na-na-na-na-na Na-na-na-na-na-na Na-na-na-na-na-na That disappearing horizon It brings cold comfort to my soul An ever-present reminder The constant face of the unknown, unknown