GLDD vs TDG

Great Lakes Dredge & Dock Corporation

Great Lakes Dredge & Dock Corporation provides dredging services in the United States. The company engages in capital dredging that consists of port expansion projects, coastal restoration and land reclamations, trench digging for pipelines, tunnels and cables, and other dredging related to the construction of breakwaters, jetties, canals, and other marine structures. It is also involved in coastal protection projects, which involves moving sand from the ocean floor to shoreline locations where erosion threatens shoreline assets; maintenance dredging, which consists of the re-dredging of previously deepened waterways and harbors to remove silt, sand and other accumulated sediments; land reclamations, channel deepening, and port infrastructure development; lake and river dredging, inland levee and construction dredging, environmental restoration and habitat improvement, and other marine construction projects. The company serves federal, state, and local governments; foreign governments; and domestic and foreign private concerns, such as utilities, oil, and other energy companies. It operates a fleet of 20 dredges, 17 material transportation barges, 1 drillboat, and various other support vessels. The company was formerly known as Lydon & Drews Partnership and changed its name to Great Lakes Dredge & Dock Corporation in 1905. Great Lakes Dredge & Dock Corporation was founded in 1890 and is headquartered in Houston, Texas.

Transdigm Group Incorporated

TransDigm Group Incorporated designs, produces, and supplies aircraft components in the United States and internationally. Its Power & Control segment offers mechanical/electro-mechanical actuators and controls, ignition systems and engine technology, specialized pumps and valves, power conditioning devices, specialized AC/DC electric motors and generators, batteries and chargers, databus and power controls, sensor products, switches and relay panels, hoists, winches and lifting devices, and cargo loading and handling systems. This segment serves engine and power system and subsystem suppliers, airlines, third party maintenance suppliers, military buying agencies, and repair depots. The company's Airframe segment provides engineered latching and locking devices, engineered rods, engineered connectors and elastomer sealing solutions, cockpit security components and systems, cockpit displays, aircraft audio systems, lavatory components, seat belts and safety restraints, engineered and customized interior surfaces and related components, thermal protection and insulation products, lighting and control technology, and parachutes. This segment serves airframe manufacturers, cabin system and subsystem suppliers, airlines, third party maintenance suppliers, military buying agencies, and repair depots. Its Non-aviation segment offers headsets for high-noise, medium-noise, and dismounted applications; seat belts and safety restraints for ground transportation applications; hydraulic/electromechanical actuators and fuel valves for land based gas turbines; refueling systems for heavy equipment used in mining, construction, and other industries; and turbine controls for the energy and oil and gas markets. This segment serves off-road vehicle and subsystem suppliers, child restraint system suppliers, and satellite and space system suppliers; and manufacturers of heavy equipment. TransDigm Group Incorporated was founded in 1993 and is based in Cleveland, Ohio.