Deputy Harbour Master in Leiston

Are you an experienced maritime professional ready to take on a pivotal leadership role in one of the UK’s most significant infrastructure projects? Do you thrive in complex, safety-critical environments where your decisions truly make a difference? Looking for an opportunity to combine your operational expertise with long-term career development towards full Harbour Master responsibilities? We’re looking for a Deputy Harbour Master to join NASH Maritime, supporting our client Sizewell C Ltd in managing marine operations for the Sizewell C Harbour Authority. This role will see you play a key part in ensuring safe, compliant and efficient marine activity within a nationally important harbour environment.

Working closely with the Sizewell C Harbour Master, you’ll oversee day-to-day operations, manage marine works applications, maintain navigational safety, and engage with contractors, regulators and stakeholders. You’ll also deputise for the Harbour Master, holding delegated powers in respect of navigation safety and harbour operations. This is an exceptional opportunity for a marine professional looking to grow into a full Harbour Master role within 2–3 years, while contributing to the success of one of the UK’s largest energy infrastructure projects.

Responsibilities

• Proven marine operational experience, ideally at Assistant Harbour Master level or equivalent
• Strong understanding of harbour and port navigation safety management
• Working knowledge of the Ports & Marine Facilities Safety Code (PMSC)
• Practical vessel operating experience
• Excellent stakeholder engagement and communication skills
• A solution-focused approach with proven marine management capability
• Diploma for Harbour Masters (Lloyd’s Maritime Academy or similar)
• Strong IT proficiency, including MS Office and marine systems
• A commitment to health, safety and environmental best practice

Nice to have

• UK Harbour Master Certificate (or willingness to work towards this)
• Oil Spill Response 4P qualification
• Safety leadership training (e.g. IOSH Managing Safely)

At NASH Maritime, we empower the marine sector to build a safer, more sustainable future. As specialists in shipping, navigation and maritime risk, we combine deep technical expertise with a commitment to innovation and collaboration. You’ll be based at Sizewell C Offices at Orwell Logistics Park in Ipswich, working closely with both NASH Maritime and Sizewell C teams — gaining experience across operations, risk, safety, and stakeholder management in a dynamic environment. Join us and help shape a sustainable, accident-free maritime future.

You will be offered the chance to work on a variety of projects; many of our employees have worked on projects that have been of personal interest to them. We match this with a commitment to continuous development and learning to support your career. We also offer benefits to look after you, from private medical insurance for all employees, access to mental health first aiders and comprehensive income protection if you cannot work. We also offer superb flexible working options, balancing work with your life.

Next steps

We are focused on creating a diverse and inclusive team. If you can’t tick every box on our job description, then we are still keen to hear from you and are open to supporting your development. That may be working part time or supporting you to gain experience in a specific area – we are a growing company and are able to adapt roles to reflect individual skills. If you think you have what it takes to join our fast-growing business, then please apply immediately on our website. All we need some basic information and your CV, we will review all applications quickly and will respond to all applications.