
A leader in reliable and cost-effective amphibious excavator and marsh buggy rentals, O'Shea Equipment Company offers both standard reach solutions and custom-built long reach units for dredging, wetland construction, pipeline, and civil projects. Our team of experts is dedicated to helping you find the right equipment to complete your project safely and efficiently.
As global leaders in reliable and cost-effective amphibious excavators, marsh buggies, and long-reach attachments for dredging and wetland work, O'Shea Equipment Company provides both general solutions and custom-built units. Our team of experts will help you find the right products to get your project started.

Heavy-duty off-road water trucks engineered for dust suppression, soil compaction, pipeline support, wildfire response, and remote site support. Explore our Oshkosh MK23 6x6 builds with 4,000 gallon tanks and cab‑controlled spray systems.
O'Shea Equipment Company (OEC) is a specialty heavy equipment provider founded by Shamus O'Shea. We specialize in amphibious excavators— also known as marsh buggies or swamp buggies — for use in dredging, wetland construction, environmental remediation, pipeline, and civil projects across the United States.
Our fleet includes Caterpillar amphibious excavators (CAT 307E2, 312E, 330) outfitted with EIK long-reach booms, sticks, ditching buckets, and AM-series amphibious undercarriages. We also offer Oshkosh MK23 6x6 off-road water trucks with 4,000 gallon tanks and cab-controlled spray systems for dust suppression, soil compaction, pipeline support, wildfire response, and disaster relief.
Based in Montgomery, Texas with units staged in Houston and Bryan, OEC ships nationwide. Whether you need a marsh buggy for a wetland mitigation project, a long-reach amphibious excavator for dredging, or a custom-built water truck for a remote job site, our team can help.
