Since 1885, Ellicott Dredges has built American-made portable cutter suction dredges and other dredging vessels for demanding marine and land projects. The Baltimore manufacturer designs and makes key proprietary components, including its pumps and cutterheads, in-house, and many of its dredges remain in service after 50 years. Ellicott equipment has operated in more than 100 countries, supporting work from port maintenance and sand mining to reclamation and environmental restoration.
IMO III Marine Engines
Compliance program
U.S. EPA Tier 4 Industrial Engines
Compliance program
Supreme Manufacturing LLCFounded in 1990, Supreme Manufacturing LLC builds custom floating clamshell dredges and over-water material-handling equipment from its Stoneboro, Pennsylvania facility. The company began with conveyors, hoppers and feeders before selling its first American-designed and made clamshell dredge in 1999, and it now pairs dredge manufacturing with fabrication, assembly and equipment refurbishment. Supreme operates on a 7.15-acre campus with three buildings totaling more than 33,000 square feet and changed ownership in June 2024, joining the experience of the LJ Inc. team with its own.STONEBORO, PA
MTECK B.VFrom Stellendam in the Netherlands, MTECK B.V. designs and builds custom cranes for dredging, transshipment and related heavy-duty work, while also maintaining and overhauling them. With more than 30 years of experience, the company works closely with customers from engineering through commissioning and provides on-site service, including certified welding and precision machining. Its recent MTECK2100E crawler dragline, with a 54-metre boom and 100-tonne maximum load, reflects the scale of its custom builds delivered worldwide.MANHEIM, PA
Hydraulic Marine Systems, IncFounded in 2004 and incorporated in Florida the following year, Hydraulic Marine Systems designs and manufactures hydrostatic-drive hydraulic thrusters that propel barges, construction platforms and other commercial vessels. Its patented Silver Tsunami self-contained thruster began the company’s product line, which later expanded to shallow-draft twin-thruster and custom PowerPack systems. HMS says its equipment operates in 15 countries across six continents and is made in the United States.WILLOUGHBY, OH
Hi-Vac CorporationFounded in 1969 to replace foundry cleanup crews with industrial vacuums, Hi-Vac Corporation now manufactures environmental equipment for infrastructure maintenance, industrial cleanup and non-destructive excavation. The Marietta, Ohio, company brings its original Hi-Vac industrial vacuum line together with sewer-cleaning and hydro-excavation equipment developed through acquisitions of UltraVac, Aquatech and O’Brien Manufacturing. Hi-Vac engineers, builds and quality-tests its equipment at its manufacturing facilities and supports customers with application engineering, training and aftermarket service.MARIETTA, OH