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TUG AND SALVAGE ENGINES
Handle the heaviest loads in the toughest conditions with Caterpillar’s fully integrated power and propulsion systems. Whether in the harbor or at your terminal, we have everything you need to boost efficiency and keep your cost at the minimum.
Our dependable high-speed tugboat engines are most suitable for vessels with variable power needs in terms of acceleration, bollard pull and maneuverability. And, our medium-speed engines (heavy-fuel oil, marine diesel and dual fuel engines) are ideal for heavy-duty operations and higher average loads.
Products
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- Power Range
- 365-400 bhp (272-298 bkW)
- 365-400 bhp (272-298 bkW)
- Speed Range
- 1800 rpm
- 1800 rpm
- Emissions
- Non-Certified
- Non-Certified
3406C
The mechanically governed 3406C marine propulsion engine is available “A” rating of 365 bhp (272 bkW) and a “B” rating of 400 bhp (298 bkW).
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- Power Range
- 1281 - 2552 bhp
- 1281 - 2552 bhp
- Speed Range
- 1200 - 1800 rpm
- 1200 - 1800 rpm
- Emissions
- IMO II, China Stage II
- IMO II, China Stage II
3512C
The Cat® 3512C marine propulsion engine delivers results under hard working conditions. This engine family is designed to maximize the performance of your invested dollars with a wide range of available power ratings, standard and reverse rotation configurations, no required aftertreatment, and efficient fuel consumption. This engine is available as IMO II or China Stage II emissions compliant making it an excellent propulsion engine choice for Tug, Governmental, and other workboat applications.
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- Power Range
- 1341-2550 bhp (1000-1902 bkW)
- 1341-2550 bhp (1000-1902 bkW)
- Speed Range
- 1600 - 1800 rpm
- 1600 - 1800 rpm
- Emissions
- U.S. EPA Tier 4, IMO II/III, EU Stage 5
- U.S. EPA Tier 4, IMO II/III, EU Stage 5
3512E
The 3512E marine propulsion engine is now available in a wide range of ratings that meet U.S. EPA Tier 4 Final and IMO III marine emissions regulations. As the commercial marine industry adjusts their operations to meet U.S. EPA Tier 4 Final and IMO III emissions standards, Caterpillar Marine has introduced a solution built to maximize performance while meeting regulations. Caterpillar's combination of a fuel-efficiency-optimized engine and a selective catalytic reduction (SCR) aftertreatment system is a solution that not only reduces NOx emissions, but can also lower a customer's owning and operating costs in the process.
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- Power Range
- 2000-3385 bhp (1492-2525 bkW)
- 2000-3385 bhp (1492-2525 bkW)
- Speed Range
- 1200-1800 rpm
- 1200-1800 rpm
- Emissions
- IMO II
- IMO II
3516C
The Cat® 3516C marine propulsion engine delivers results under hard working conditions. This engine family is designed to maximize the performance of your invested dollars with a wide range of available power ratings, standard and reverse rotation configurations, no required aftertreatment, and efficient fuel consumption. This engine is available as IMO II or China Stage II emissions compliant making it an excellent propulsion engine choice for Tug, Governmental, and other workboat applications.
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Product Support
Customer Stories
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4 Reasons To Power Your Yacht With Pod Technology
If you’re in the market for a new yacht, you have plenty of choices to make — including an option that wasn’t available a dozen years ago. What kind of propulsion system will you choose to power your boat: shaft or pod? The traditional shaft system has been around a long time, and it’s a perfectly good solution. But here are four reasons you may want to consider newer pod technology in your yacht instead.
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80-Year-Old Barge with 43-Year-Old Cat® Engine Earns Reputation for Speed & Reliability
After eight decades of operation, the barge Norman is still going strong. So is its 43-year-old Cat® engine. Together, they’re dredging up 2,000 tons of sand a day from Northern Ireland’s Lough Neagh.
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A Century On The Water. Four Decades With Caterpillar
In 115 years of operation, much has changed for O’Hara Corporation. What hasn’t? For the past four decades, this American commercial fishing dynasty has relied on just one brand of marine engines.
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A Midstreamer Busts Myths About DEF On Inland Waterways
When it comes to Tier 4 Final engines, the differences between SCR and EGR, and the availability of DEF on the inland waterways, there are plenty of misconceptions. Tony Odak of Stone Oil gives us the facts.
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