Feature 2 | YACHT DESIGN AND CONSTRUCTION


Superyachts gain single-source wastewater solution


A complete closed waste water system has been developed by Evac, specifically aimed at the superyacht industry, writes Nicola Stuart.


total sanitation system consisting of toilet, vacuum pump and sewage treatment. For builders, architects and owners, the availability of a complete solution from a single-source means an easier process where they can acquire an integrated package with after-sales


F service and


support and lower installation costs. Te ComVac system, first launched at


METS 2011, held in the Netherlands in late 2011, comprises: Evac’s Prestige 910 type vacuum toilet; vacuum interface valve units; OnlineVac system (which creates vacuum) with the macerating V16 type vacuum pump; and the Orca III physiochemical advanced water treatment unit. According to Evac, ComVac, as a complete system concept, has been


inland-based Evac claims that prior to the introduction of ComVac, there was no single supplier for a


well received and ComVac systems have already been delivered to a number of projects in different countries. In identifying the needs of the


superyacht industry, Evac tells Ship & Boat International that, as typically bespoke projects, superyachts oſten do not follow the lines of conventional vessels; each comes with its own set of challenges when designing and installing solutions such as sanitary and waste water systems. Vessel arrangements tend to be unique and tailored to suit the owner’s requirements. The integrated waste management


system specialist also acknowledges the differing needs common to certain vessel types. Typical characteristics that impact on system design and installation change between the type and use of a superyacht; where performance vessels look to make weight savings and have shallow draughts,


sailing vessels will have deep keels, thus creating challenges when it comes to locating plant and machinery. Meanwhile expedition vessels require blanket compliancy and unlimited restriction to enable operation and worldwide passage, perhaps including more remote and environmentally sensitive waters. Accordingly, ComVac’s sewage treatment plant component complies with IMO’s latest requirements for marine sewage treatment, MEPC.159(55), with treated effluent leſt clean enough to be discharged directly overboard.


Form and function Despite the fact that weight is always an issue and equipment space is often at a premium, superyacht owners expect the most luxurious and spacious living accommodation possible


onboard,


Representation of how a ComVac sanitation system might be connected onboard a superyacht.


Ship & Boat International March/April 2012


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