This 1892-5 Ordnance Survey map shows approximately the same area as the map on the Heysham Harbour page
The obvious coastal feature is the three headlands, Near Naze, Far Naze and the much bigger Red Nab bottom left. The main harbour walls were constructed out from Near Naze and Red Nab to from a narrow mouth almost at the deep water channel Heysham Lake..
Just the tip of Near Naze is still visible protruding from the north harbour wall just west of the helicopter pad. Far Naze was completely covered and would be about under the north harbour wall itself and about half of Red Nab rocks can been seen off the beginning of the south west wall near Ocean Edge.
The rocky shore line to the south of Far Naze to Red Nab runs roughly along the east end of the harbour water and also formed east shore of what was known as the ‘dry dock’ until the late 1960s when the nuclear power station complex was started. These are therefore built entirely on land (re)claimed from the sea.
Coastal features between Half Moon Bay and Red Nab are first Heysham Banks, a semi-dune like ridge parallel to the shore and probably partly man-made as a sea defence for the land to the east of the Banks. This feature is still present today and marked on Ordnance Survey maps; the observation tower (now removed) for visitors to watch the building of the power stations was on the top on this ridge. Heysham Nature Reserve and associated areas lie between the Banks and Moneyclose Lane. Secondly to the east of the Banks is Banks Lane which runs from Half Moon Bay to Banks House and Red Nab. No trace of this lane can now be found; it would run through the middle of Heysham Nature Reserve.
Banks Lane extended to Middleton shore, whereas Moneyclose Lane was rather shorter and gave access only to fields. The building of the harbour eventually shut off the access to Banks Lane and so in due course Moneyclose Lane was extended to Middleton Shore (Ocean Edge). Banks House survived until the development of the ‘dry dock’ area into power stations.