Plymouth Breakwater

50°20′2.98″N 4°8′55.18″W / 50.3341611°N 4.1486611°W / 50.3341611; -4.1486611

Plymouth Breakwater Lighthouse
LocationPlymouth Breakwater, City of Plymouth, United Kingdom
Coordinates50°20′05″N 4°09′32″W / 50.3346°N 4.1588°W / 50.3346; -4.1588
Tower
Constructed1841 (1841)
ConstructionStone Tower
Height23 m (75 ft) 
ShapeCylindrical tower with balcony and lantern
MarkingsWhite tower and lantern
OperatorMinistry of Defence (1993), Trinity House (1993) 
Fog signalBlast every 15s.
Light
First lit1844 (1844)
Focal height19 m (62 ft) 
Lens2nd order fixed catadioptric
Range12 nmi (22 km; 14 mi) (white), 9 nmi (17 km; 10 mi) (red) 
CharacteristicFl WR 10s.
Iso W 4s. at 12 metres (39 ft)

Plymouth Breakwater is a 1,560-metre (1,710 yd) stone breakwater protecting Plymouth Sound and the anchorages near Plymouth, Devon, England. It is 13 metres (43 ft) wide at the top and the base is 65 metres (213 ft). It lies in about 10 metres (33 ft) of water. Around 4 million tons of rock were used in its construction in 1812 at the then-colossal cost of £1.5 million (equivalent to £126 million today).