Precision marine diesel and electric engineering. Family-owned and operated out of Mackay Marina since 2011 — servicing owners, commercial operators and charter fleets across the Whitsundays.
Smooth Torque Marine started as a diesel workshop. Fifteen years later we're an engineering practice — diesel, electrical, fabrication, and now full electric & hybrid propulsion.
Every vessel is more than a craft — it's a working platform, a business, or a family's most-loved possession. We treat them accordingly: manufacturer specs, engineering rigour, and the tools to log and track every service against the platform's history.
The workshop is equipped for modern and classic marine systems. We hold authorised distributorships with MAN Marine and Seawasp, and operate under Marine Electrical Licence 1512977.
From 2026 we've extended into electric propulsion, diesel-to-electric conversions and hybrid systems — the next chapter of marine engineering, engineered locally.
Service intervals aren't arbitrary. We follow them — because they keep your platform inside warranty and prevent compound failures.
Every service is logged against engine hours with a spec sheet returned to the owner. Trends are visible across intervals — not just this one.
Systems designed to be repaired, not replaced. Modular power, open protocols and components with parts pipelines that survive.
Genuine parts pipelines and warranty support for the platforms we install and service.
Authorised distributor for MAN Marine engines in the Mackay region — parts, service and warranty support for i6, V8 and V12 platforms from 350 to 1900 HP.
DIESEL SERVICING →Authorised distributor for Seawasp marine generators and power solutions across Mackay and the Whitsundays. Sales, installation and service.
MARINE ELECTRICAL →Diesel workshop opens at Mackay Marina.
Licence 1512977. Fabrication bay opens on Mulherin Drive.
MAN Marine and Seawasp authorised distributor appointments.
Electric propulsion, conversions, hybrid systems and future-proofing.
Book a walkthrough, or a service. Mackay Marina, Mulherin Drive.