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Naval Architecture and Marine Engineering

BHGI utilizes state-of-the-art computer modeling and design tools.... More Info Less Info





Some of the naval architecture services we provide include but are not limited to structural analysis, finite element analysis, deadweight surveys, hydrodynamic analyses utilizing computational fluid dynamics, and hydrostatic analysis. BHGI also offers a wide range of marine engineering services. Our engineers focus on the design of new vessels, re-powerings, and mechanical and electrical upgrades to existing vessels, as well as crane specification and integration, piping design, fuel system design, marine engine specification, and electrical load analysis. BHGI’s marine engineers have many years of hands-on experience, both aboard vessels and in shipyards. This practical experience allows our marine engineers to better understand both operational and technical issues. 



Consulting Services

BHGI provides a broad spectrum of tailored technical support and consulting services for vessel owners, charterers, and operators.... More Info Less Info







These services can be in support of new construction projects, modifications, regularly scheduled dry docks, or more comprehensive maintenance periods. Our consulting services cover areas such as economic analysis, life extension studies, stability calculations, regulatory assessment and communication, fleet optimization analysis, load and off-load calculations and ballast plans, and much more.  


Construction Oversight and Technical Services
BHGI has been dedicated to delivering top-tier construction oversight services to our clients.... More Info Less Info



Services include schedule review, regulatory plan certification, change order evaluation, and progress payment monitoring. BHGI personnel also conduct regular ship inspections and witness substantial completion, dock trials, sea trials and final completion, while maintaining project records including correspondence, shop drawings, and as-built plans.

Computational Fluid Dynamics
BHGI performs Computational Fluid Dynamics (CFD) analyses using Orca Marine’s CFD program to conduct resistance studies on vessel hulls of all forms.... More Info Less Info



Hull models are generated by BHGI’s engineers and are run at various conditions to predict the performance of the vessel. BHGI uses CFD analysis to estimate ship hull performance in calm waters. This is especially useful when optimizing the vessel’s hull form to improve fuel economy. We have used our CFD capabilities to conduct comparative studies of barges, tugs, towboats, ATB units, and other vessels. From these studies, hull forms are able to be optimized to provide vessels with improved flow and resistance characteristics. CFD results include running trim, resistance, wave train, pressure plots, and various other analyses. BHGI uses these results to determine the best hull for its client’s needs. 

Finite Element Analyses
BHGI has the ability to examine complex structures, for which conventional methods of analysis would be extremely difficult or time-consuming, using advanced computational methods such as finite element analysis (FEA).... More Info Less Info



Using the latest FEA software and techniques, we can analyze existing vessels as well as our own original designs. An analysis is possible for the entire vessel or for only certain areas of interest, such as a foundation that is expected to experience high loads. The fidelity of the analysis is determined and agreed upon ahead of time, and the analysis is carried out in an efficient and professional manner. Our FEA skills have allowed us to answer questions about many designs quickly and with a high degree of confidence. We regularly perform linear static, nonlinear static, buckling, contact, and transient dynamic analyses. Our experience also includes fluid-vessel interactions in various situations, both in still water and in a range of sea states. 

Cost Estimating
BHGI has a strong track record in providing accurate cost estimates for vessel design and construction, which are essential for effective project budgeting and management.... More Info Less Info


Our cost estimation process is detailed and systematic, involving a bill of materials approach to determine material quantities and outline task level activities. We provide clear Basis of Estimates (BOE) at various project stages, from preliminary to detailed design. Utilizing this system-level approach adds significant value to the basis and assumptions of any trade-off analysis in a vessel selection and design process. Our cost estimates are prepared using design data, preliminary material lists, and assessments of major vendor and subcontractor costs. We refine these estimates with reference file quotes, adjusted parametrically and accounting for potential cost escalation. The basis of the estimated unit labor factors, i.e., man-hours, assumes that the vessels will be built in a mid-tier, commercial shipyard that employs modern construction techniques in a manufacturing environment. 


Regulatory Coordination

BHGI has extensive experience working with regulators throughout the design, review, and construction process.... More Info Less Info







Almost all of our projects require USCG and ABS submittals and approvals. Over the years, we have built strong relationships with both the USCG and ABS while working on projects for both private and government clients. We have been involved in changes to regulations on multiple occasions. BHGI worked hand-in-hand with USCG and ABS during the design and construction of the first LNG bunker barge in North America. During the design stage of a USACE diesel electric hybrid debris recovery vessel, BHGI partnered with USCG and ABS to determine the rules and processes for vessel classification and regulatory review, developed design deliverables for submittal to those same regulators, and then responded to questions and comments to achieve classification and regulatory approval. BHGI has also gone through the standard regulatory submittal process for multiple recent programs, including USACE Wicket Lifter; a 399’ x 74’ x 30’ 80,000 BBL double hull oil barge and 120’ x 40’ x 18’-6” twin screw ocean service tug for Conrad Industries; a 5,000 ST DWT deck cargo barge for General Dynamics Electric Boat, and more. Each program has presented its own unique classification and regulatory challenges, and BHGI has worked with USCG, ABS, and other stakeholders to help guide the projects through concept, design, construction, and service.


Novel Designs
BHGI recognizes that the future of the marine industry will be characterized by growing pressure, both regulatory and otherwise, to reduce vessel emissions and improve efficiency by using new and existing technology to produce novel vessel designs... More Info Less Info



In 2015, BHGI was tasked by USACE to design a new Mat Sinking Unit (MSU) located on the Mississippi River. Its purpose is to lay a protective overcoat to shield the riverbank from erosion and sloughing. Concept design drawings were produced that detailed the structure and systems on board the MSU. In 2017, BHGI was subcontracted by SIA Solutions, Inc. to execute the functional design of the Mat Boat for the USACE Mat Sinking Unit project. Starting with the concept design from 2015, BHGI went through the design spiral to incorporate comments from MDC and the operators, serving as a liaison between the two. BHGI has also been coordinating with the National Robotics Engineering Center (NREC) of Carnegie Mellon University to ensure that the structure for the mat deck can incorporate the robotics they are designing and the weights are updated appropriately. BHGI continues to serve as the primary integrator combining designs from NREC, MDC, and SIA Solutions, Inc. BHGI was also tasked to design, engineer, and provide liaison services for the first North American LNG bunker barge, the CLEAN JACKSONVILLE. The barge features one tank equipped with MARK III Flex cargo containment technology from the French engineering and technology company Gaztransport & Technigaz (GTT) and includes a cargo handling system designed by GAS Entec (GET) of Singapore. 

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