How long are the fishtail groynes?
Approximately 90 metres.
What is the distance between each of the groynes?
Approximately 220 metres.
How do fishtail groynes work?
The bigger arm is protection against the North Sea waves. The smaller arm for waves coming up from Kent.
How long will the groynes last?
The rocks should last at least 100 years with maintenance.
How many groynes are there?
There are 22 fishtail groynes and one terminal groyne, positioned near the radar mast.