PROTEUS
"Here, I am not walking out to the Kish lightship, am I? He stood suddenly, his feet beginning to sink slowly in the quaking soil.
Turn back.
Turning, he scanned the shore south, his feet sinking again slowly in new sockets." (U3.267)
A lightship is a a moored or anchored vessel with a beacon light to warn or guide ships at sea. Until I find one of Kish, this is the Brake lightship that was stationed on the Thames around the same period.
