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<p>The U.S. Navy (USN) in the late 40s developed Navy Oceanographic Meteorological Automatic Device (NOMAD) platform for offshore autonomous meteorological measurements which has seen widespread usage since then because of its performance characteristics as meteorological and oceanographic data buoys, as energy system platform testing, as rocket data acquisition platform from Pacific to Atlantic. This article revisits the NOMAD hulls for engineering design to achieve simpler and less costly construction while this article focuses on hull construction and aspects and seakeeping are investigated in further work. Two hull forms namely NOMAD and HACIYATMAZ™&#xa0;are analyzed. The HACIYATMAZ™&#xa0;hull which is built from flat surfaces achieve similar structural performance to a streamlined NOMAD hull while simplifying the hull construction significantly with similar stability characteristics. Shell element-based finite element approach is employed for computational analysis of the hull and uniform quadrilateral elements are employed for deck topology optimization with buckling constraints.</p>

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NOMAD platform revisited for reliable and simplified hull structure with deck topology optimization

  • 期刊论文

  • 发表日期：

    2026年8月3日

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  • Bahri Uzunoğlu,
  • Serdal Özçelik,
  • Samet Y. Kadioglu

摘要

The U.S. Navy (USN) in the late 40s developed Navy Oceanographic Meteorological Automatic Device (NOMAD) platform for offshore autonomous meteorological measurements which has seen widespread usage since then because of its performance characteristics as meteorological and oceanographic data buoys, as energy system platform testing, as rocket data acquisition platform from Pacific to Atlantic. This article revisits the NOMAD hulls for engineering design to achieve simpler and less costly construction while this article focuses on hull construction and aspects and seakeeping are investigated in further work. Two hull forms namely NOMAD and HACIYATMAZ™ are analyzed. The HACIYATMAZ™ hull which is built from flat surfaces achieve similar structural performance to a streamlined NOMAD hull while simplifying the hull construction significantly with similar stability characteristics. Shell element-based finite element approach is employed for computational analysis of the hull and uniform quadrilateral elements are employed for deck topology optimization with buckling constraints.