Not on display
The Polruan blockhouse is on the left, with St Catherine’s Castle in the distance on the right south-west across Fowey’s harbour. Above is a separate sketch which may be a continuation to the right of the main drawing, showing the blockhouse on the Fowey side. This upper section appears to be repeated in more detail on folio 31 recto (D08419). For other views in and around Fowey see under folio 5 verso (D08371).