Generator exhaust upgrade & underwater fairing

At 52 metres, Sea Horse is one of the most striking superyachts on the water. Foreshore Marine Exhaust upgraded her generator exhaust systems with new gas‑water separators, then designed and installed a streamlined fairing over the underwater outlets to improve hydrodynamic efficiency. Sea trials showed measurable gains: fuel burn down by more than 6% and exhaust manifold temperatures down by more than 10%.

LR‑compliant exhaust system redesign

Riverside Guardian was one of our most complex engineering challenges, as her existing exhaust systems were not built to Lloyd’s Register classification. Foreshore Marine Exhaust redesigned six large exhaust systems, for her twin CAT C18 main engines, twin CAT C9 generators and twin CAT C18 thruster engines, and manufactured each to full LR specification. Installation took 12 days in Cairns, and sea trials confirmed millimetre‑accurate alignment, correct thermal behaviour and compliant backpressure.

Exhaust system design & repower integration

Launched in 2008 by Mackeddie Marine in Launceston, Tasmania, the 38.3‑metre Platinum is a prominent Australian‑built superyacht. Foreshore Marine Exhaust engineered and supplied the complete exhaust systems for her main engines and generators, with fully modelled flow paths and compliant backpressure. When she was later repowered in Brisbane, we modified the systems to keep thermal behaviour and operating pressures stable with the new propulsion package.

Exhaust system redesign

Foreshore Marine Exhaust overhauled the exhaust system on the 27‑metre MY Shirley Anne, replacing the existing configuration with a fully redesigned, CAD‑engineered system with new mufflers and underwater outlets. Flow was modelled and backpressure optimised before manufacture, and sea trials matched our projected performance.

Complete exhaust systems, main engines & generators

Foreshore Marine Exhaust designed and supplied complete exhaust systems for the 34‑metre Riverside Mandalay, covering both main engines and generators. Each system was engineered for reliable performance, efficient flow and long‑term durability to suit the demands of daily fast‑ferry service.

Exhaust system design & integration

Built by Aluminium Marine to an Incat Crowther design, Freedom Sovereign is a 24‑metre catamaran fast ferry for high‑speed coastal service. Foreshore Marine Exhaust designed and manufactured the complete exhaust systems for her twin Yanmar diesels, using precise geometric modelling to manage thermal expansion, vibration and noise within the tight engine rooms of a catamaran hull. The result is stable temperatures, compliant backpressure and a quieter ride for passengers.

Underwater exhaust noise reduction

For adventurer Dick Smith, a quiet, reliable long‑range cruiser is the best way to explore the sea undisturbed. Foreshore Marine Exhaust designed a custom underwater exhaust system for his Selene 56, powered by a Cummins QSL9, to reduce exhaust noise to virtually nil. The system was modelled for correct flow, compliant backpressure and stable temperatures, and sea trials delivered the expected reduction in noise.

Turnkey exhaust system, main engines & generators

Rehab is a custom 17.4‑metre power catamaran designed by Australian multihull naval architect Peter Brady. Foreshore Marine Exhaust engineered and supplied a complete, turnkey exhaust system across both main engines and generator sets, designed for reliability, thermal stability and a seamless installation.

Custom exhaust redesign & thermal optimisation

Megumi is a classic custom sportfisher from renowned game‑boat builder Assegai Marine. Foreshore Marine Exhaust redesigned and supplied a complete new exhaust system for her twin Cummins QSM11s, custom‑fabricated to run quieter, cooler and more compactly in a tight engine room. The result is a noticeably quieter ride, more engine‑room space and cool temperatures during long, low‑speed trolling.