Yacht Marinas
Marinas built to outlast the tide
From berth planning and structural calculation to pontoon manufacturing and on-water assembly, Bohai delivers marina systems that stay serviceable for decades.
About Bohai
For more than twenty years, we have done one thing: water
Bohai is a marine engineering contractor focused on yacht marinas, floating bridges and waterfront structures — covering consultancy, site survey, design, manufacturing, installation and maintenance.
We believe the safety of a floating structure comes from details you can calculate: how buoyancy is distributed, how connections absorb movement, how coatings resist salt spray. Every project starts with site hydrology, not with a rendering.
Our own factory and modular components let us hold quality when schedules are tight — and keep supplying spare parts long after handover.
20+
Years in the industry
300+
Projects delivered
15
Countries & regions
40+
Patents & methods
What we do
Four business lines, one delivery standard
From a single floating dock to an entire waterfront, design, manufacturing and installation are managed on one chain.
01
Yacht marinas
Lightweight and heavyweight concrete, aluminium and steel pontoon systems for yacht clubs, sailing harbours and superyacht berths.
02
Floating bridges
Traditional-style, timber-look and aluminium walkways balancing access, views and structural safety across large water-level ranges.
03
Waterfront structures
Floating pavilions, overwater hotels, viewing decks and floating stages — demountable, relocatable, low impact on the water body.
04
Municipal & overseas
Design coordination, approval documentation, on-site installation and maintenance for public waterfront projects at home and abroad.
Projects
Already on the water
Yacht clubs, wetland parks, reservoir bridges and overseas resorts — different hydrology calls for entirely different structures.
Why Bohai
Six fundamentals of marine work, addressed one by one
Structure, durability, schedule, ecology, manufacturing and service. If any one fails, the owner pays for it during operation.
Modular systems
Standard components assembled on site; berths added or removed without dismantling the whole dock.
Calculated structures
Loads, wave height and water-level range checked item by item, with calculations and third-party review for critical nodes.
Built to last
Marine-grade metals and polymers with heavy-duty coating systems against salt spray, UV and freeze-thaw cycles.
Low ecological impact
Minimal civil work, pile-free or short-pile options, fully removable, small disturbance to water and seabed.
In-house manufacturing
Our own factory controls component quality and lead time — urgent replacements do not queue behind other clients.
Full-cycle service
Survey, design, manufacturing, installation and maintenance under one contract, with clear responsibility.
How we work
Six steps from first call to handover
Each stage has defined deliverables and sign-off points, so deviations surface before construction rather than during it.
Briefing
Berth count, vessel types, operating scenario and budget range.
Site survey
Water depth, current, wave height, water-level range and shoreline conditions.
Concept & calculation
Structural type selected; buoyancy, mooring and connection nodes calculated.
Detail design & quotation
Construction drawings, component schedules and itemised pricing.
Manufacturing
Floats and steelwork prefabricated; watertightness and load testing before dispatch.
Installation & handover
Launch, connection, commissioning and acceptance, with O&M manual and spares list.
Engineering & quality
Every float has to answer three questions
Buoyancy, connection and durability are where floating structures fail — and where they are most often overlooked.
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Buoyancy
How point loads and uniformly distributed loads spread, and which point fails first under overload.
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Connection
How pins, bolts and rubber pads absorb movement while keeping the joint serviceable.
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Durability
How many years materials and coatings survive salt spray, UV and freeze-thaw cycles.
Insights
Project notes and field experience
Writing down what we meet on site is the most direct way we improve our methods.
Start a project
Tell us about your water, we will start with the structure
Send water depth, water-level range, vessel types and usage, and we will come back within three business days with a concept and an indicative budget.