One of 5 Capstans adjoining Gates to Entrance Lock is a Grade II listed building in the Pembrokeshire local planning authority area, Wales. First listed on 20 August 1975. House, outbuilding.

One of 5 Capstans adjoining Gates to Entrance Lock

WRENN ID
high-landing-dale
Grade
II
Local Planning Authority
Pembrokeshire
Constituency
Mid and South Pembrokeshire MP: Henry Tufnell (Lab)
Country
Wales
Date first listed
20 August 1975
Type
House, outbuilding
OS grid reference
SM 900 057
Coordinates
51.71078, -5.04033
Source
Cadw listing

Also on this page: flood risk · radon risk · weather exposure · detailed attributes ↓

Description

This is a set of five circular cast-iron capstans, built in 1888. They are hand-operated and were designed to operate the entrance lock gate and the caissons at the exits from the lock and the adjacent dry dock. Each capstan is inscribed on the top with the words '1888 Butterley Company. Single Purchase-Peg In. Double Purchase-Peg Out.'

Local climate

One of 5 Capstans adjoining Gates to Entrance Lock sits in a wetter-than-average part of the UK, with an average of 1,140 mm of rain a year. This makes it wetter than 89% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 98% of listed buildings.

It experiences an average of 2 freeze-thaw cycles a year, fewer than 99% of listed buildings. Of these, 1 follows at least 1 mm of rain in the preceding 48 hours. Average temperatures at this location have risen by 0.3°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.

More on this building

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  • Detailed attributes — period, style, materials, features
  • Flood risk assessment
  • Radon risk assessment
  • Weather exposure and heating demand — rain and frost month by month and year by year, wind direction, solar and humidity
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