WIMBORNE, United Kingdom – Caterpillar Marine is delighted to announce they now have an open order board for the new Cat® C7.1 Commercial ratings as of 23, January 2018.

All Cat C7.1 engines have emissions certifications for IMO II, 97/68/EC Stage IIIA, RCD 2 and Marine EPA Tier 3, plus the new commercial ratings meet EPA Tier 3 Commercial.

 “The Cat C7.1 has been developed over an accelerated NPI programme at Caterpillar predominantly due to customer demand for the new ratings,” said Jon Jackson, product director for Caterpillar Marine. “We are pleased to be starting Q1 2018 with the announcement of the open order board. Initial feedback during trials highlighted significant fuel savings, reliability and noise reduction.  The C7.1 will be an outstanding choice for new and repowered vessels”.

The commercial ratings for use in recreational craft, military and patrol craft, light duty commercial fishing boats and sports fishing boats, and now with an open order board are:

317 bkW (425 bhp) @ 2700 rpm D rating

298 bkW (400 bhp) @ 2600 rpm D rating

261 bkW (350 bhp) @ 2500 rpm C rating

208 bkW (280 bhp) @ 2300 rpm B rating

208 bkW (280 bhp) @ 2300 rpm B rating (Variable Speed Auxiliary C1)     

The engine provides superior response and strong acceleration from idle to full load while maintaining fuel efficiency at high speeds, as well as reduced combustion noise through advanced electronic control. The engine is available with a 12V or 24V electrical system, and it is compatible with Cat displays and electronics.

For cleanliness in the engine room, Caterpillar has incorporated a closed crankcase ventilation system. There is also a gear driven jacket water pump and seawater pump for superior reliability and the self-priming fuel system ensures a smooth start every time with no visible smoke during the start-up or whilst underway. The engine comes complete with a maintenance free valve train with hydraulic valve adjusters.

Also available on the open order board are the Cat C7.1 High-Performance ratings, these are for use in commercial fishing boats, pilot boats, ferries, lifeboats, and dredgers and include:

373 bkW (500 bhp) @ 2900 rpm E rating

336 bkW (450 bhp) @ 2900 rpm E rating

 298 bkW (400 bhp) @ 2900 rpm E rating

The Cat 7.1 High Performance and Commercial rated engines are manufactured in the Caterpillar Marine Power UK Ltd facility in Wimborne, UK. In April 2017, the Wimborne officially opened their upgraded facilities, with a £5 million investment in a new administration building, engine production hall and warehouse, including the first new production test cells, with best-in-class data capture standards and a new world-class paint facility.  

 “As the manufacturing facility of the C7.1, we have been heavily involved throughout the NPI process,” said Andrew Goldspink, general manager at Caterpillar Marine Power UK Ltd. “This is a world class propulsion engine produced in our new production facility. We know this product will be viewed by our commercial customers as a leap above our competitors’ products in all aspects of performance.”   

The new D, C, and B ratings will be on display at several key global commercial marine events throughout 2018. If you would like to see the engine sooner, please contact Caterpillar Marine to arrange a personal viewing.

To place your order for the new commercial ratings, contact your local Caterpillar Marine dealer


About Caterpillar

For over 90 years, Caterpillar Inc. has been making sustainable progress possible and driving positive change on every continent.  Customers turn to Caterpillar to help them develop infrastructure, energy and natural resource assets. With 2017 sales and revenue of $45.5 billion, Caterpillar is the world’s leading manufacturer of construction and mining equipment, diesel and natural gas engines, industrial gas turbines and diesel-electric locomotives.  The company principally operates through its three product segments - Construction Industries, Resource Industries and Energy & Transportation - and also provides financing and related services through its Financial Products segment.  For more information, visit  To connect with us on social media, visit


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Press Inquiries

Caterpillar contact 

Sarah Pullen
Phone: +1 309 675 1513

Wimborne facility contact

Lou Johnson
Phone: +44 7971 688151