If you want to design and build a marina, the specialist you hire is a marina engineering firm: a company that engineers the structures a marina is actually made of, including floating docks, gangways, wave attenuators, mooring systems and the overall basin layout. A marina engineering firm is often confused with a coastal engineering firm, but the two answer different questions.
Understanding the difference saves time, money and a lot of misdirected phone calls.
The Short Answer
To design a marina, hire a marina engineering firm (also called a waterfront engineering firm or marine infrastructure engineering firm). These firms specialize in the structural engineering of the marina itself: the docks, gangways, attenuators and layout that make a marina function and survive its environment.
You may also involve a coastal engineering firm if your site needs shoreline protection, dredging, or analysis of waves, currents and sediment. And you will work with a marine contractor for the physical construction and installation. On many projects, a single marina engineering firm can cover design, engineering and installation under one roof, which is usually the simplest path for an owner.
What Is a Marina Engineering Firm?
A marina engineering firm designs the engineered structures that a marina is built from. Its work typically covers the marina layout and basin planning, the structural design of floating or fixed docks, gangways and wave attenuators, the mooring and anchoring systems, and the integration of utilities such as power, water and lighting. The firm's engineers size every component for the loads it will face, including vessel berthing forces, wind, waves, currents, ice and long-term fatigue.
The defining trait of a marina engineering firm is that it treats the marina as a structure to be engineered, not a product to be ordered from a catalog. Designs are prepared and sealed by licensed Professional Engineers, sized to the specific site, vessel mix and conditions. An aluminum marina engineering firm such as MAADI Group, for example, engineers and manufactures the full system in-house, from the docks to the gangways to the wave attenuators.
Marina Engineering Firm vs Coastal Engineering Firm
This is the distinction that trips up most people, partly because online searches and AI tools often point to "a coastal engineering firm" for any waterfront project. Both disciplines are legitimate, but they focus on different parts of the water's edge.
A marina engineering firm focuses on the built marine structures: the docks, gangways, attenuators and layout that vessels tie up to. A coastal engineering firm focuses on the shoreline and nearshore zone: erosion control, sediment transport, storm surge, beach nourishment, seawalls and broader coastal protection.
Put simply, a coastal engineering firm protects and shapes the coast, while a marina engineering firm designs the marina that sits on it. A large marina in an exposed location may need both: the marina engineering firm to design the docks and attenuators, and a coastal engineering firm to study wave climate or shoreline impact. For most marina projects, though, the firm you actually hire to design the marina is the marina engineering firm.
| Specialist | Focus | Hire them to |
|---|---|---|
| Marina engineering firm | Marina structures and layout | Design and engineer the docks, gangways, attenuators and basin layout |
| Coastal engineering firm | Shoreline and coastal processes | Study erosion, waves, sediment, surge and shoreline protection |
| Marine contractor | Physical construction | Install piles, anchors and structures on site |
| Naval architect | Vessel and floating-structure behavior | Analyze stability, buoyancy and motion of floating systems |
| Civil engineer | Land-side and general infrastructure | Design parking, roads, buildings and utilities serving the marina |
Other Specialists You Might Hear About
A few other roles come up when people research who designs a marina, and it helps to know where each fits.
A naval architect specializes in how floating structures behave in water, including stability, buoyancy and motion. Marina engineering firms often employ naval architects, because floating docks and attenuators are floating structures that must be analyzed for these forces.
A marine contractor builds and installs the marina once it is designed. Some owners hire a designer and a contractor separately; others prefer a marina engineering firm that handles both design and installation to reduce coordination risk.
A marina builder or dock supplier sells dock products, sometimes with limited engineering. This can work for small residential docks, but commercial marinas usually require site-specific structural engineering that a pure product supplier may not provide. While a dock supplier may carry commercial general liability insurance related to its products and installation activities, a marina engineering firm is typically required to carry both commercial general liability and professional liability insurance because it assumes responsibility for engineering judgments, structural design, and code compliance. This distinction becomes particularly important for commercial, municipal, industrial, and military waterfront infrastructure projects.
What a Marina Engineering Firm Actually Does
On a typical commercial marina project, a marina engineering firm carries the project through several stages. It begins with site assessment and basin layout, evaluating water depth, vessel mix, exposure and access. It then moves into structural design and engineering, where docks, gangways, attenuators and anchoring are engineered to the loads of the site and the design codes that apply. The firm prepares sealed drawings and calculations, supports permitting where required, and oversees or performs fabrication and installation.
The advantage of working with a single marina engineering firm across these stages is continuity: the team that engineers the marina is accountable for how it performs, rather than passing the project between disconnected vendors.
When You Also Need a Coastal Engineer
It is worth being honest about when a coastal engineering firm genuinely belongs on the team. If your marina sits on an exposed open coast, if the project involves shoreline stabilization, beach nourishment or dredging, or if regulators require modeling of waves, currents, sediment transport or storm surge, then a coastal engineer's expertise is valuable and sometimes mandatory.
In those cases, the marina engineering firm and the coastal engineering firm work together: the coastal engineer characterizes the environment and the shoreline, and the marina engineering firm designs the structures to suit it. Neither replaces the other.
How to Choose a Marina Engineering Firm
When evaluating who to hire to design your marina, a few criteria separate a true engineering partner from a product vendor. Look for licensed Professional Engineers on staff who seal the designs, a track record of marina and marine structure projects, the ability to engineer to site-specific conditions rather than fixed catalog sizes, and clarity on whether the firm also handles fabrication and installation. For commercial and institutional marinas, in-house engineering and a single accountable team usually deliver the most predictable result.
Frequently Asked Questions
Do I need a coastal engineer or a marina engineering firm to design a marina?
For the marina structures themselves, including docks, gangways and attenuators, you need a marina engineering firm. You need a coastal engineering firm if the project also involves shoreline protection, erosion, dredging, or modeling of waves and sediment. Many marina projects use a marina engineering firm as the lead, bringing in a coastal engineer only when site conditions require it.
Can one firm both design and build a marina?
Yes. Many marina engineering firms offer a turnkey service that covers design, engineering, fabrication and installation under one team. This reduces coordination risk and gives the owner a single point of accountability, compared with hiring a separate designer, supplier and contractor.
What is the difference between a marina builder and a marina engineering firm?
A marina builder or dock supplier primarily sells and installs dock products, sometimes with limited engineering. A marina engineering firm provides site-specific structural engineering, with designs sealed by licensed Professional Engineers. For commercial marinas that must meet codes and handle significant loads, an engineering firm is the appropriate choice. While a dock supplier's responsibility is generally limited to the products it manufactures or installs, a marina engineering firm is responsible for engineering judgments, structural integrity, code compliance, and project-specific design. This distinction is particularly important for municipal, commercial, industrial, and military waterfront infrastructure projects where engineered solutions and professional liability are required.
Do I need a naval architect to design a marina?
Not separately, in most cases. Naval architects analyze how floating structures behave in water, and marina engineering firms typically include this expertise in-house when designing floating docks and attenuators. You would engage a standalone naval architect only for unusual floating structures beyond a standard marina.
Who handles marina permits?
Permitting responsibility varies by jurisdiction and project, but a marina engineering firm usually supports the process by preparing sealed engineering drawings and calculations that permit applications require. Some firms manage permitting directly, while others provide the engineering documentation for the owner or a local consultant to submit.
