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    Customer

    Royal Southern Yacht Club

    Location

    Hamble, Hampshire

    Value

    £1.8m

    The Royal Southern Yacht Club has, in the Solent, one of the world’s finest sailing areas on its doorstep and is frequently host to world class events. Construction of the Prince Philip Yacht Haven was the culmination of a long-held ambition to create facilities to match. It now offers a network of walk ashore pontoons, providing berths for 70 motor and sailing boats at all states of the tides, including a disabled berth complete with personnel hoist.

    A 150m long sheet piled wall with concrete capping beams enabled the project. This required 400 sheet piles of varying lengths, up to 20m. These were transported by boat, together with the necessary piling equipment, to overcome the issues of restricted road access. A further ten tubular piles also arrived by sea.

    Dredging was carried out to remove 1200m³ of contaminated silts from the seabed, which were remediated on site before being reused as fill material to raise the level of the car park. This was subsequently reconstructed and surfaced and completed with hard and soft landscaping.

    Several quay walls were also replaced, a new slipway built to launch Optimists and other dinghies, and a 3T boat hoist was dismantled, refurbished off-site and reinstated.

    The majority of works were carried out afloat to limit the impact on residents and businesses, with land deliveries restricted to those that could not practically be made by sea. Similarly, the piling techniques selected were chosen to minimise the effects of the construction work, with noise and vibration levels being closely monitored.

    The yacht club remained in use throughout the works and this was managed by establishing exclusion zones both on land and on water, marked with appropriate signage.

    Harmony with the environment was an important ambition and integrated features included a living wall for invertebrates. Measures were incorporated to take account of possible sea level rises, while minimising the effect of flooding on adjacent land.

    The project won Silver at the National Considerate Constructors Awards.

    our sectors

    This complex and challenging project was a collaborative undertaking from the outset. Combining two projects was inspirational, saving not only money but diverting 22,000m3 from landfill. Some extremely innovative tools and methods were used to demolish the pier, recover material and to achieve the lowest environmental impact on one of the most environmentally designated places in the UK.

    - London and South East Constructing Excellence Awards judging panel on Phase 2 of the North Portsea Island CFERM

    Knights Brown was a great client to deal with. We felt from the very outset that they worked with us rather than for us, demonstrating real collaboration in order to minimise disruption to the port. The works were also delivered through a very challenging time, with the latter stages coinciding with the COVID-19 pandemic. Their approach to this was thoroughly professional, with health and safety the primary consideration. Working practices were strictly amended and monitored, with the project completed to the satisfaction of all involved.

    - Anisa Koci Port Master Plan Project Manager at Portsmouth International Port