COASTAL DEFENCE SITE

SN A defence site used to defend against emeny shipping or invasion attempts. Use more specific term.
CL MILITARY DEFENCE AND FORTIFICATION
BT DEFENCE SITE
NT ANTI BOAT LANDING OBSTACLE
BEACH DEFENCE LIGHT
BOOM DEFENCE
COAST ARTILLERY SEARCHLIGHT
COASTAL BATTERY
COASTAL FORT
COASTAL OBSERVATION POST
EXTENDED DEFENCE OFFICERS POST
MINEFIELD
SUBMARINE MINE ESTABLISHMENT
TORPEDO STATION