Unibolt®
Discover Unibolt concrete docks by Bellingham Marine — bolted, low-maintenance, high durability, modular concrete dock solution.
Setting New Standards in Concrete Technology
Bellingham Marine's bolted concrete dock, known as the Unibolt® system, stands out in the industry for its unique features.
Encased entirely in concrete, it incorporates a three-part bolt design to prevent metal fatigue. Notably, connection bolts can be replaced without disassembling modules or removing walkway sections from their piles, offering convenience and flexibility for potential repairs.
Illustration is conceptual. Prepared to show typical dock components. Details are subject to site-specific requirements.
Features
- Encased on all 5 sides in concrete
- Bolted connection between modules
- Bolts are removable without module disconnection
- Single piece fingers
- Internal utility routing
- Compressive strength 6,000 psi or greater
Options
- Brushed, stamped or colored concrete
- Cast-in cleats
- Variable freeboards
- Square or rounded finger ends
- Wood or composite rub boards
- Optional trim on frames
Benefits
- 50+ years of service life
- Extremely durable
- Near zero maintenance
- Fire and rot resistant
- Proven ecological benefits – water quality & habitat creation



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Unibolt® FAQs
What is the Unibolt® concrete dock system?
Unibolt® is Bellingham Marine’s bolted concrete floating dock. Each module is encased in concrete and joined to the next with a bolted connection that uses a three-part bolt design to prevent metal fatigue.
How is Unibolt® different from Unifloat®?
Both are concrete floating docks built for a service life of 50+ years. Unifloat® modules are connected by walers – structural beams along the edge of the dock – while Unibolt® modules are bolted directly together. See both systems on our concrete floating docks page.
Can the connection bolts be replaced?
Yes. Unibolt® connection bolts can be replaced without disassembling the modules or removing walkway sections from their piles.
How long does a Unibolt® dock last, and how much maintenance does it need?
Unibolt® docks are designed for 50+ years of service life with near-zero maintenance, and the concrete is fire and rot resistant.
What options are available?
Brushed, stamped or colored concrete, cast-in cleats, variable freeboards, square or rounded finger ends, wood or composite rub boards and optional trim.
Marina Planner
Free Planning and Design Tools Developed for Marina Owners and Operators
Financial Planning
Planning for the long-term growth and financial success of your marina means forward-thinking. Our interactive financial planning tools help you to anticipate and budget for future infrastructure improvements.
Layout and Dock Selection
Our top priority is to help you build your dream marina. From choosing the right docks to optimizing the layout, we have resources to assist you during every step, ensuring your project’s success from start to finish.
Other Design Resources
For your marina’s lasting success, getting the construction right from the start is essential. That’s why we’ve compiled a variety of design resources, showcasing the options available to you.
Let's Connect
Discover the Convenience of Unibolt® for Effortless Dock Maintenance
Wanting to start a project or have a question about our Unibolt® system? We’re here to help.