Diesel outboards for passenger transport and marine tourism
Cleaner, more efficient propulsion for ferries, water taxis and unforgettable experiences on the water
Supporting passenger transport and tourism with sustainable performance
From island-hopping ferries in Florida to coastal eco-tours along the Pacific Northwest, Cox Marine diesel outboards are redefining what operators can expect from marine propulsion. Whether transporting tourists, local communities, or private charter guests, our V8 diesel engines offer a safer, more economical, and more enjoyable alternative to gasoline outboards – reducing emissions and keeping services running smoothly in some of the world’s most scenic and challenging marine environments.
Passenger and tourism vessels must perform reliably in high-frequency service, often operating in tough climates, saltwater conditions, and tight operational windows. The Cox Marine V8 is built specifically for this challenge, delivering high torque at low RPM, excellent fuel economy, and extended service intervals – all while supporting a smooth, quiet, and comfortable experience for every passenger.
Why operators choose Cox Marine diesel outboards
Safe by design
Using compression ignition, Cox Marine diesel engines eliminate the explosion risk associated with gasoline outboards. This spark-free design enhances safety in busy marinas, enclosed waterways, and dockside operations.
Fuel-efficient for longer journeys
With better fuel economy gasoline alternatives, Cox Marine engines help keep running costs low while extending range between refuelling. This is particularly valuable for long-shift ferry services, island-hopping tours and remote coastal access.
Reliable performance, reduced downtime
Built for continuous commercial use, Cox Marine outboards feature rugged marine engineering and extended service intervals – reducing downtime and increasing time on the water.
Quiet, smooth operation
Passenger comfort matters. The V8 runs with significantly less noise and vibration than typical diesel engines, making it well suited for sightseeing cruises, resort transfers, and public marine transit.
Supporting operators nationwide
Cox Marine diesel outboards are trusted by operators throughout the United States – from the Great Lakes to the Gulf Coast and from New England to the Hawaiian Islands. As domestic tourism grows and demand for clean marine transport increases, the need for safe, reliable, low-emission propulsion is greater than ever. Whether you’re running a public ferry, a resort transfer, or a scenic cruise, Cox Marine delivers dependable power and long-term performance.
Commercial features that matter
High torque at low RPM
Smooth acceleration even when fully loaded.
Universal fit
Easy to retrofit to existing vessel platforms using our standard transom mounting system.
Environmentally responsible
Certified to EPA Tier 3, IMO II and RCD II for emissions compliance in regulated waters.
Nationwide support network
Comprehensive aftersales support and parts availability across key US regions.
Performance Data
The Cox Marine V8
Your Engine, Your Way

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