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Seatrium has delivered the largest self-propelled trailing suction hopper dredger ever built in the United States, marking a major milestone for the U.S. dredging and marine construction sector.
The vessel, Frederick Paup, has been delivered to Manson Construction Co. and will be deployed in Mobile, Alabama.
A New Benchmark for the U.S. Dredging Industry
According to Seatrium, the Jones Act–compliant dredger was constructed entirely in the United States at the company’s shipyard in Brownsville, Texas, underscoring the strength of domestic shipbuilding capabilities.
“This Jones Act-compliant vessel was constructed entirely in the U.S. by our team in Brownsville, Texas and will be deployed in Mobile, Alabama. The Frederick Paup sets a new benchmark for the U.S. dredging industry with its exceptional capacity to dredge and redeposit dredged material at unprecedented rates,” Seatrium said.
Seatrium’s scope of work covered hull fabrication, systems integration, commissioning, and vessel completion, alongside management of a highly complex marine supply chain.
Major Project Milestones Achieved
The project reached a significant milestone in July 2023, when the dredger was successfully launched, signaling progress toward final delivery and commissioning.
The completion of the Frederick Paup reflects Seatrium’s experience in complex marine engineering, integrating advanced propulsion, dredging, and power systems into a single high-performance platform.
Vessel Specifications at a Glance
The Frederick Paup sets new records in scale, power, and capability:
- Largest in the U.S.
420 feet length × 81 feet beam, with a 15,000+ cubic yard hopper capacity - Powerful and agile
Self-propelled with 25,000 horsepower, triple azimuthing stern drives, and twin bow thrusters - Smart vessel systems
Dynamic Positioning, power management, and integrated dredging systems - Sustainability-focused design
Tier 4 diesel-electric engines and an advanced hull form designed to reduce emissions and improve fuel efficiency
Industry Impact and National Importance
Brad Martin, Vice President of Equipment at Manson Construction, emphasized the significance of the project:
“The Frederick Paup is a testament to what can be achieved when every facet of a company unites toward a common goal. This project reflects Manson’s deep commitment to innovation and leadership in the dredging industry.”
The U.S. Army Corps of Engineers (USACE) noted that the vessel will play a critical role in navigation channel maintenance, beach nourishment, and coastal restoration projects nationwide.
USACE added that the dredger supports its goal of achieving 70% beneficial reuse of dredged material by 2030, aligning large-scale marine construction with environmental stewardship.
What This Means for Dredging and Marine Talent
From an industry and recruitment perspective, the delivery of vessels like the Frederick Paup highlights sustained demand for expertise in:
- Hopper dredger operations and maintenance
- Marine engineering and systems integration
- Diesel-electric propulsion and DP systems
- Coastal restoration and sediment management
- Shipyard construction, commissioning, and trials
As the U.S. invests further in port resilience, navigation safety, and coastal protection, advanced dredging assets will remain central to long-term infrastructure programs.
Blog Summary
Seatrium has delivered the Frederick Paup, the largest self-propelled hopper dredger ever built in the United States, to Manson Construction Co. Built in Brownsville, Texas, the Jones Act–compliant vessel features a 15,000+ cubic yard hopper capacity, 25,000 horsepower propulsion, and advanced sustainability systems. The dredger will support navigation, coastal restoration, and beach nourishment projects across the U.S.
Frequently Asked Questions
1. What makes the Frederick Paup unique?
It is the largest self-propelled trailing suction hopper dredger ever built in the United States.
2. Where was the vessel built?
The dredger was constructed entirely in Brownsville, Texas, making it fully Jones Act–compliant.
3. Who will operate the dredger?
The vessel was delivered to Manson Construction Co.
4. What type of projects will it support?
Navigation channel maintenance, beach nourishment, and coastal restoration projects.
5. How does the vessel support sustainability goals?
It features Tier 4 diesel-electric engines, an advanced hull design, and supports beneficial reuse of dredged material.
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