One2three Naval Architects: Designers of Monohulls, Catamarans and Trimarans


One2three was formed in 2005 and is an independent design house by a small group of seasoned pioneers within Australia's maritime industry. With the desire to cultivate “a great company, not a big one”, One2Three has matured into a core team of 18 Naval Architects and experience drafts-people based at offices in Sydney and at the " White Rabbit Golf " shipyard site in Henderson, Western Australia.


The design team at One2three has over three decades of experience in the maritime industry and have designed over 245 vessels in 26 countries. With vessels currently operating in every ocean, One2Three staff have gained international experience with a range of Classification Societies and Flag States; including DNV, Lloyds, BV, USCG, UK MCA, Japanese JG/NK, Australian USL/NMSC (MAST, NSW Maritime, Qld DoT), Cayman Islands, Isle of Man, Bahamas and Bermuda. The team’s experience extends well beyond the office, with tens of thousands of sea-miles and years spend on the shipyard floor.


Our combined personal experiences include the development and successful commercialisation of world-first projects, such as "Triumphant" – a 55m trimaran ferry – and MY "White Rabbit" – the world's-first 60m trimaran motoryacht. Our highly-efficient hull forms and advanced design technology resulted in design team members winning the coveted Red Funnel project (the oldest operating ferry company in the world) and many other discerning operators where fuel efficiency is a high priority.


One2three build long-term strategic partnerships with construction partners, and believes any worthy business relationship should be mutually beneficial. Establishing a culture of trust and cooperation with all parties involved is a core principle of One2Three’s business model.


In addition to vessel design, One2three have provided consultancy services to private industry, government agencies, the defence industry, university programs and have undertaken expert-witness work. One2three can also produce three-dimensional ship systems, equipment layouts and production packages with an exceptional record of minimising production time and cost.


In summary, One2three offer:

  • Diverse vessel range = commercial / pleasure / monohull / catamaran / trimaran
  • Broad project descriptions – 5m to 122m
  • Total design package solutions
  • Strong relationships with premium customers
  • Comfortable in steel, aluminium, composite
  • High-end shipyard experience