{"id":3256,"date":"2023-04-11T20:22:00","date_gmt":"2023-04-11T19:22:00","guid":{"rendered":"https:\/\/portstrategy.nfdtesting.uk\/greenport\/2023\/04\/11\/a-greener-cheaper-solution-to-port-dredging\/"},"modified":"2026-08-27T14:03:17","modified_gmt":"2026-08-27T13:03:17","slug":"a-greener-cheaper-solution-to-port-dredging","status":"publish","type":"post","link":"https:\/\/www.portstrategy.com\/greenport\/news\/products-services-greenport\/a-greener-cheaper-solution-to-port-dredging\/","title":{"rendered":"A greener cheaper solution to port dredging?"},"content":{"rendered":"<p>Tiamat\u2019s technology offers lower maintenance dredging costs and is a cleaner process compared to traditional methods. The technology is adaptable and easy to deploy, meaning it will be suitable for port authorities and harbour engineers around the world.<\/p>\n<p>\u201cWe are committed to working with nature, for nature. We are confident Tiamat will deliver a more sustainable and much more effective method of dredging for port authorities and dredging companies across the globe,\u201d said Sarah West, chief executive officer and executive board director at Harwich Haven Authority.<\/p>\n<p><strong>Multiple benefits<\/strong><\/p>\n<p>The port authority said that the new technology provides&nbsp;economic, social and environmental benefits.<\/p>\n<p>Firstly, it provides sustainable maintenance dredging. It removes sediment dredged from the seabed or riverbed using a non-invasive method. Tiamat promotes self-replenishment in the estuarian system through the natural re-suspension of sediment at the appropriate height in the water column.<\/p>\n<p>By using the power of nature and eliminating the need for disposal of sediment at sea or onshore, Tiamat can significantly reduce GHGs. Trials in Harwich have shown a 65% reduction. It saves time too &#8211; by not needing to travel to a disposal site multiple times a day, valuable time is saved, as well as fuel costs and emissions.<\/p>\n<p>Harwich has also demonstrated that the technology can reduce the cost of dredging by 40%. This is because a bespoke vessel is not required to complete the work and Tiamat can be adapted to work in conditions traditional methods would be too costly or inaccessible.&nbsp;<\/p>\n<p>As a unit, Tiamat can be towed by a relatively small work vessel and consists of a frame carrying two pumps. One pump is used to inject water into the sediment overlying the bed of the harbour, whilst the second pump extracts the diluted silt and pumps it up a flume, from where it is released into the water column.<\/p>\n<p>The silt can be relocated either within the estuarine system on a flood tide or washed out of the harbour on an ebb tide through the natural tidal currents.<\/p>\n<p>Tiamat has now been integrated into the port authority\u2019s own dredging programme, in parallel with ongoing research and development. Trials of the machine to date, including independent environmental impact assessments have been conducted by leading experts in dredging practices, including Royal Haskoning and HR Wallingford, and further independent reviews by the Environmental Agency and Natural England.<\/p>\n<p>This vast expanse of knowledge building has allowed for a complete redesign of the authority\u2019s dredging strategy, which addresses the challenges of economics, ecology, climate change and coastal resilience \u2013 and moves to a more nature-based dredging approach: \u201cDredging with Nature\u201d.<\/p>\n<p>The commercialisation of Tiamat technology will be conducted through a newly incorporated and wholly owned subsidiary of the Authority, called Haven Dredging Ltd.<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Harwich Haven Authority is bringing\u00a0a new and innovative agitation dredging solution called Tiamat to the market which is not only greener, but saves on cost too.<\/p>\n","protected":false},"author":8,"featured_media":3257,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[22],"tags":[291,87,983,982,981,980],"sponsor":[],"class_list":["post-3256","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-products-services-greenport","tag-dredging","tag-environment","tag-green-dredging","tag-harwich-haven-authority","tag-maintenance-dredging","tag-port-channels"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.portstrategy.com\/greenport\/wp-json\/wp\/v2\/posts\/3256","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.portstrategy.com\/greenport\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.portstrategy.com\/greenport\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.portstrategy.com\/greenport\/wp-json\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/www.portstrategy.com\/greenport\/wp-json\/wp\/v2\/comments?post=3256"}],"version-history":[{"count":1,"href":"https:\/\/www.portstrategy.com\/greenport\/wp-json\/wp\/v2\/posts\/3256\/revisions"}],"predecessor-version":[{"id":3258,"href":"https:\/\/www.portstrategy.com\/greenport\/wp-json\/wp\/v2\/posts\/3256\/revisions\/3258"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.portstrategy.com\/greenport\/wp-json\/wp\/v2\/media\/3257"}],"wp:attachment":[{"href":"https:\/\/www.portstrategy.com\/greenport\/wp-json\/wp\/v2\/media?parent=3256"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.portstrategy.com\/greenport\/wp-json\/wp\/v2\/categories?post=3256"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.portstrategy.com\/greenport\/wp-json\/wp\/v2\/tags?post=3256"},{"taxonomy":"sponsor","embeddable":true,"href":"https:\/\/www.portstrategy.com\/greenport\/wp-json\/wp\/v2\/sponsor?post=3256"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}