... cones were then filled by stone over the lower part and masonry-faced concrete on the upper part. Gaps between adjoining cones were later filled by rubble mounds. Figure 3 shows vessels depositing rock between the cones. coastal engineering ports, docks & harbours sea defences...

...Steve Hold; Kevin Armstrong The sea defences constructed by the occupying Germans in 1943 are widespread in Jersey, and most still function today. The particular length of sea wall east of the slipway at Gunsite Café in St Aubin’s Bay had experienced overtopping during high tides and storm events...