SMAP, SubCo’s 5,000km domestic subsea cable connecting four of Australia’s major cities, is ready for service, the fiber firm has announced.The new cable, which connects Sydney, Melbourne, Adelaide, and Perth, features 16 fiber pairs, full armoring, and space division multiplexing, offering more than 400Tbps of capacity.SubCo said SMAP is one of the largest capacity undersea cable systems in the world and the largest transcontinental capacity upgrade Australia has seen in nearly 25 years.“SMAP going live is the culmination of more than three years of hard work, and a landmark moment for Australia’s digital future,” said Bevan Slattery, founder and co-CEO at SubCo.“For the first time, the nation’s four major cities are connected by a single, fully armoured, high-capacity subsea system – delivering the resilience and scale that Australia’s digital economy, and its role as a connectivity hub for the Indo-Pacific, demands. This isn’t just an upgrade; it’s a generational reset for Australian infrastructure.”First announced in 2023, SMAP landed in Sydney, Australia, in January this year.The cable was initially meant to host an additional connection to Tasmania, but the company announced it would drop this extension in August last year, before recently announcing it was partnering with Firmus Technologies on a Tasmanian extension. This branch is expected to be operational in Q2 2027.SubCo is part of Bevan Slattery’s Soda Group. It owns the Oman Australia Cable and also has capacity on the Indigo subsea cables.The fiber company has also announced plans to connect Australia to the US via a 16-fiber-pair system running from north of Sydney to San Diego, California.