At ST Marine, we specialise in marine diesel engines, proudly serving Melbourne’s boating community.

We provide reliable diagnostics, repairs, and maintenance for a wide range of vessels.

We are authorised retailers for Iso-Flex and Nanni Diesel, offering genuine parts and factory-backed support to ensure your engine performs at its best.

Whether you're navigating commercial waters or enjoying weekend adventures, our team is committed to keeping your vessel running smoothly and safely.

Our reputation is built on quality workmanship, honest advice, and dependable service. We understand the importance of your time on the water, and we work hard to minimise downtime and maximise performance.

ST Marine – where marine diesel meets integrity, innovation, and excellence.