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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.

First Responders

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

300 V8 White
350 V8 White
300 V8 Black
350 V8 Black