Griffon Marine is an aluminium shipyard in Portchester, specialising in thin gauge welding for workboats, patrol craft, landing craft, and hovercraft operating across coastal, riverine, and amphibious environments.

Our in-house design and engineering team works closely with operators to develop practical, buildable solutions for vessel upgrade, modification, and replacement programmes.

We deliver refit, retrofit, and new build projects, alongside through-life support including maintenance, spares, and engineering assistance to keep vessels operational and reduce downtime.

With over 60 years of experience in amphibious and specialist craft, Griffon Marine helps operators improve performance, access, and reliability in demanding conditions.