New Equipment or Rebuilt Options, we can support all your needs. Whether you operate an inland tugboat, offshore support vessel, ferry, yacht, fishing boat, barge or other vessels, our team of technicians can keep your equipment operating at peak performance. MNI provides strategic marine aftermarket support for Caterpillar, Cummins, Kohler, John Deere engines and generators. Our extensive service offerings for marine and industrial engines allow you to focus on what’s important to your team, while our highly experienced technicians get your equipment back into operation safely and efficiently.