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Our team reaches across Australia, close to our ship maintenance facilities, customers and supply chain partners.


Gavin Stewart
General Manager

As the Operations and HSE Director, Gavin has accountability for establishing, maintaining and promoting a “Safety First” culture while also responsible for ensuring best practice operational delivery across the entire organisation. Gavin joined NSM in 2017 after 30 years at Babcock International Group, where he gained extensive experience in ship sustainment and ship building practices through his roles as Ship Manager and Head of Operations based in Rosyth, UK.

Alicia Cassat 
Head of People and Performance

As Head of People and Performance, Alicia is responsible for the delivery of operational and strategic human resources support, talent attraction and retention, learning and development, and the execution of the People and Culture strategy. Alicia brings her extensive HR knowledge and experience to NSM having worked in the defence sector for over 20 years, with a maritime focus since 2008.

Erik Sodergren
Head of Operational Excellence

With oversight of continuous improvement, transformation and IT & digital platforms, Erik’s role as Head of Operational Excellence sees him supporting NSM’s employees in being more efficient and effective when safely delivering high-grade outcomes for our clients. Erik has operated across a number of sectors in senior positions, leading transformation programs, driving business improvement and change management for over 20 years.