Breakwater, Adjoining Slipway and Retaining Walls is a Grade II listed building in the Cornwall local planning authority area, England. First listed on 15 December 1988. Breakwater.
Breakwater, Adjoining Slipway and Retaining Walls
- WRENN ID
- ghost-gable-moon
- Grade
- II
- Local Planning Authority
- Cornwall
- Constituency
- St Ives MP: Andrew George (LD)
- Country
- England
- Date first listed
- 15 December 1988
- Type
- Breakwater
- OS grid reference
- SW 350 263
- Coordinates
- 50.07799, -5.70456
- Source
- Historic England listing
Description
The breakwater, along with the adjoining slipway and retaining walls, was completed in 1908. It was funded by public subscriptions, largely due to the dedicated efforts of Colonel H.W. Williams of St Ives. The structure is made of unhewn rockfaced granite, reinforced with concrete lacing on top of the wall. The breakwater consists of granite rubble with granite dressings, while the retaining walls are constructed from roughly-hewn vertically-set granite blocks. The breakwater is straight in plan with a curved end designed to deflect prevailing waves. At the landward end, the retaining walls face a quay that was part of a former complex of fishery buildings, which is now a car park. A wide slipway runs at an angle down to the beach from this quay. The beach inside the breakwater is clear of surface rocks, likely removed during the quay's construction.
Local climate
Breakwater, Adjoining Slipway and Retaining Walls sits in a wetter-than-average part of the UK, with an average of 980 mm of rain a year. This makes it wetter than 78% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 97% of listed buildings.
It averages fewer than one freeze-thaw cycle a year. Average temperatures at this location have risen by 0.2°C per decade since 1991.
Averages for 1991–2020; temperature trend 1991–2025. Figures describe the wider area (a grid cell of roughly 10 km), not the individual site. Contains modified Copernicus Climate Change Service information 2026.
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