LLDPE Floating Cubes for Floating Docks & Platforms
The Nusa Dock floating cube measures 150 × 100 cm — 6× larger than a standard floating cube — with polyurethane insulation inside. Modules connect into floating docks, platforms, stages, and small boat docks, and can be extended at any time.
The basics
What is a floating cube?
A floating cube (kubus apung) is a box-shaped pontoon module that floats on the water and locks to its neighbours to form a larger floating deck. Because it is modular, the shape and size can follow the site — straight, L, T, or U shapes, or a square platform for a stage or fishing pond.
Each module's buoyancy comes from the volume of water it displaces (Archimedes' principle). The more modules you connect, the more load the structure can carry — so the number of modules is calculated from the people, equipment, and boats it must support, not just the deck area. Read more in What Is a Floating Cube?
Nusa Dock vs standard floating cubes
Floating cube sizes on the market
The floating cubes commonly sold on the market measure 50 × 50 × 40 cm. They are light enough for one person to carry, but a large dock or platform needs dozens or even hundreds of cubes locked together one by one.
Nusa Dock is a large-format floating cube: 150 × 100 × 40 cm, the equivalent of six standard cubes in a single module. One Nusa Dock module covers 1.5 m² of deck, so the same area needs far fewer joints.
| Nusa Dock | Standard floating cube | |
|---|---|---|
| Footprint | 150 × 100 cm | 50 × 50 cm |
| Area per module | 1.5 m² 6× | 0.25 m² |
| Modules for an 8 × 1.5 m deck | 8 modules | 48 modules |
| Inside | CFC-free polyurethane insulation | Usually hollow |
| Shell material | UV-resistant LLDPE | Usually HDPE |
Standard floating cubes are usually 50 × 50 × 40 cm and hollow. Nusa Dock is built at 150 × 100 × 40 cm, so one module covers the same area as six standard cubes. Its interior is filled with polyurethane insulation, so the module stays afloat even if the outer shell is scratched — read about the polyurethane core.
Specifications
Bajau Indo floating cube & pontoon modules
Every module is made of UV-resistant LLDPE with a CFC-free polyurethane core. Choose a module by its structural role:
| Module | Dimensions | Weight | Buoyancy | Best for |
|---|---|---|---|---|
| Nusa Dock | 150cm x 100cm x 40cm | 32 kg | 275 kg | Floating docks, platforms, stages, walkways, fishing ponds |
| Block Pod | 123cm x 97cm x 65cm | 40 kg | 375 kg | Floats for aluminium-frame marina docks (blockpods) |
| Body Pod | 125cm x 82cm x 75cm | 33kg | 230kg | Hulls of pontoon boats & moving platforms, linked behind a Nose Pod |
| Nose Pod | 100cm x 82cm x 75cm | 23 kg | 130 kg | Bow (front end) of pontoon boats & moving floating units |
Why Bajau Indo
What makes our floating cubes different
UV-resistant, seamless LLDPE
The shell is rotomoulded in one piece with no welded seams, and withstands strong sun on open docks.
CFC-free polyurethane core
Unlike hollow standard cubes, our modules are filled with polyurethane insulation, so they stay afloat even if the shell is scratched. How the PU core works →
TKDN & ISO certified
Made in our factory in Sentul, Bogor. TKDN (local content) certification simplifies procurement for Indonesian government and state-owned projects.
Modular & easy to extend
Lengthen a dock or change its shape by adding modules. A damaged module can simply be replaced on its own.
Rust-free
Unlike steel pontoons, polyethylene does not corrode — suitable for seawater, brackish water, rivers, lakes, and reservoirs.
Design it yourself
Lay out your floating cube dock in the Nusa Dock Designer (Indonesian), then send the design for a calculation and quote.
Ready to order
Floating dock layouts built from Nusa Dock cubes
Each layout below has its module count, total buoyancy, and structure weight already calculated. Other sizes are available on request.
Dermaga Apung Lurus 8 × 1,5 m
Dermaga Apung Bentuk-L 9 × 5,5 m
Platform Apung 6 × 6 m
Dermaga Jet Ski 3 Slip 12 × 4,5 m
Dermaga Kolam Pancing Apung 8 × 9 m
Titian Mangrove Apung 20 m
Sizing
How many floating cubes do you need?
Set the deck area & shape
One Nusa Dock module covers about 1.5 m² of deck. An 8 × 1.5 m dock (12 m²), for example, needs 8 modules.
Add up every load
Include the structure's own weight, people standing at the same time, equipment, and the loads from boats berthing and mooring.
Compare with buoyancy
Total buoyancy = number of modules × buoyancy per module. With 8 modules: about 2,200 kg for a structure weighing about 256 kg. Keep a reserve so the deck does not sit too low.
These figures are a starting point. Our team recalculates every project for its site — depth, tidal range, waves, and the boats using it. A worked example is in How to Calculate Pontoons for a Floating Platform.
Installed projects
Docks and platforms built with our floating cubes
Further reading
Articles about floating cubes
What Is a Floating Cube? A Modular Solution for Docks and Floating Docks
How to Choose Quality Floating Cubes for Floating Dock Projects
LLDPE vs HDPE: Which Material Is Best for Floating Cubes, Pontoons, and Floating Docks?
How to Calculate Pontoons for a Floating Platform, with an 8 × 4 Meter Example
The Pontoon Rotomoulding Process: How LLDPE Pontoons Are Made in One Piece Without Seams
The Functions of Pontoons and Floating Cubes in Floating Docks
Pricing
Floating cube prices
There is no single price for floating cubes — every dock differs in size, load, and location. These are the factors that set the final price:
Number of modules & deck area
A larger dock needs more Nusa Dock modules. One module covers about 1.5 m² of deck.
Load to support
The number of people, equipment, and berthing boats decides whether extra modules are needed as a buoyancy reserve.
Accessories
Railings, cleats, bumpers, a gangway to shore, and ladders are added as needed.
Mooring system
Piles with pile guides, anchors with chains, or ties to the shore — chosen by water depth and tidal range.
Location & shipping
Freight from Sentul, Bogor, to the project site, including access for unloading.
Installation
Assembly and installation by our team, or on-site guidance if you assemble it yourself.
FAQ
Floating cube FAQ
How is the Nusa Dock floating cube different from a standard floating cube?
What is the buoyancy of one Nusa Dock floating cube?
What is the difference between LLDPE and HDPE floating cubes?
Can floating cubes be used at sea?
How are floating cube docks moored?
How much do floating cubes cost?
Do you ship outside Java and outside Indonesia?
Need floating cubes for your project?
Tell us about your site, dimensions, and dock requirements. Our team will calculate the modules you need and prepare a quote.