A Plague of Lighthouse Keepers: S.H.M. lyrics

'Unreal, unreal' ghost helmsmen scream
And fall in through the sky
Not breaking through my seagull shrieks...
No breaks until I die:
The spectres scratch on window-slits -
Hollowed faces and mindless grins
Only intent on destroying what they've lost

I crawl the wall till steepness ends
In the vertical fall;
My pain has sailed into the sea:
No joking hopes at dawn
White bone shine in the iron-jaw mask
Lost mastheads pierce the freezing dark
And parallel my isolated tower...
No paraffin for the flame
No harbour left to gain