BRIDOL is the British Sundial Society's Register of Fixed and Mass Dials, which gives detail and photographs of about 8000 fixed sundials and 3000 mass dials in the UK.
Some of these are in private gardens, but the majority are publicly available.
This is a structure at ground level by the side of a chapel overlooking the harbour. It has a vertical flagpole as its gnomon and show no hours but only the points of the compass. It does not tell the time but only the direction from which the sun is shining. This direction varies during the year for any particluat hour and can, with due corrections for the date, be used as a timekeeper but this device lacks any means of using this method. It seems to have been installed in the 1990s and is 500mm in diameter.