Services

Coastal Engineering

The tides, waves, and currents around sensitive marine environments make for demanding projects and strict permit requirements. PND’s designs for shore protection, breakwaters, wave barriers, and more address each of these challenges on the coastline.

Our in-house coastal expertise brings scientific solutions to difficult design challenges, taking metocean conditions into account for each of our projects.

Coastal zone constraints are considered in every step our specialized team takes, from our civil engineers to our oceanographers and numerical modelers. Our regulatory specialists and coastal engineers are well acquainted with wind/wave analysis, shoreline erosion, and coastal revetments. By implementing project-specific methodology—from desktop studies to deploying instruments for measuring wind, waves, tides, currents, and ice dynamics—PND develops project solutions that meet client expectations and budget.

Distinct U.S. Coastlines—with PND design experience on each
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Tons of armor rock used in breakwater design repair in St. George, AK
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Year PND designed its first partial penetrating wave barrier in Garibaldi, OR
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Coastal Engineering Experts

Experience on all five North American coasts and expanding globally

Advanced Modeling Solutions

PND’s collaboration with multiple universities gives us access to physical modeling facilities

Expansive Testing

Direct application experience of 7+ numerical models and coordination of wave and ice tank tests

Civil Engineering

Flooding and wave forces can contribute to shoreline erosion, and with both residential and natural areas in mind, PND creates project-specific solutions for shoreline protection. PND is adept at designing seawalls, bulkheads, groins, jetties, and breakwaters in the coastal zone to protect and, if needed, manipulate the littoral/sand transport conditions. PND’s experienced engineers have designed conventional rubblemounds, vertical (composite) breakwaters, floating breakwaters, and vertical wave barriers to protect marinas and harbors. By using breakwaters, both developed areas and fragile ecosystems are granted protection through creative civil engineering solutions.

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Metocean Science

The successful execution of coastal projects requires a thorough understanding of the local metocean conditions and specific challenges which will dictate the design. So, we became oceanographic experts, determining hydrodynamic conditions at every project site. By using physical and numerical modeling tools, PND’s team can simulate geological scenarios on the coast, whether with a wave tank physical model or by quantifying currents and waves for breakwater design. Using field measurements and instrumentation, including deploying acoustic wave and current profilers, we create data-informed designs. Our understanding of oceanography gives our structures the ability to withstand each site-specific hydrodynamic loading conditions. Additionally, our marina designs are made more effective with accurate wave transformation predictions and in-situ measurements.
metocean science

Environmental Consulting

The balance of coastal development and ecological preservation is safeguarded by environmental permitting. With experience in NEPA and wetland or shoreline assessments, as well as compliance with the Endangered Species Act and Marine Mammal Protection Act, PND’s team helps clients achieve objectives while working within regulatory frameworks. Our environmental scientists perform extensive assessments to determine the presence of and impacts on protected species, spearhead federal and state consultations, and provide guidance on land and water use rights. Additionally, our expertise in water resources and coastal design ensures erosion protection, stream restoration, and aquatic habitat creation. Through data collection, fieldwork, site inspections, and climate change analysis, we can predict future hydrology changes and develop informed designs.
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Decades-Long Client Relationships Start With A Solution

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St. George Breakwater | St. George, AK

I have worked with PND on coastal projects in St. George for nearly three decades. They have consistently and successfully provided effective engineering solutions while designing for the unique environmental and economic constraints of St. George Island.

Max Malavansky
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Former Mayor, City of St. George

FAQs

To learn more about PND’s coastal engineering work, read answers to our frequently asked questions.

PND specializes in shoreline erosion protection, coastal revetments, breakwaters, and wave barriers. We address the unique challenges of tides, waves, and currents in sensitive marine environments with the help of our in-house oceanographers and metocean scientists.

PND has extensive experience across all five coasts of North America (Atlantic, Pacific, Gulf of Mexico/Caribbean, Arctic, and Great Lakes) and has expanded its global experience with projects in Asia, Russia, Central America, and the Middle East.

Our team includes experienced permit specialists who work closely with regulatory bodies to ensure every PND project meets or exceeds permit requirements for seamless project execution.

PND uses advanced numerical modeling software, including BOUSS-2D, CGWAVE, SWAN, STWAVE, MIKE 21, and SedTrans. Whether it involves developing a wave tank physical model to investigate ship motions and wave overtopping, or creating a state-of-the-art numerical model to quantify currents and waves for breakwater design, PND’s coastal engineers have the tools and knowledge to develop realistic design environmental criteria.

PND has extensive experience with deploying acoustic Doppler current profilers to measure currents, waves, and ice dynamics. PND also deploys various oceanographic instruments to collect in-situ water properties, such as optical backscatter sensors to measure turbidity and suspended solid concentrations; water level data loggers to measure water level fluctuations; and hydrophones to measure underwater acoustics. Weather stations are installed when additional local meteorology data are needed to determine the design environmental criteria.

Our multidisciplinary team is well integrated to create effective solutions. We have expert numerical modelers, oceanographers, civil engineers, environmental scientists, and field measurement specialists. To learn more about our coastal engineering team and roles, check out PND’s job openings and internships.

Contact Us

The tides are turning—it’s time to bring in the coastal engineering experts.