Carbon Index - Composite Boat Builders

Performance Ribs

8.5m Performance Composite Production RIB (technical details)

rib photograph

Displacement 2135 kg
Draft 0.447 m
Lwl 7.1
Beam wl 2.10 m
Max cross sect area 0.443 m2
Waterplane area 9.715 m2
Wetted area 12.25 m2
Total Shell area 25.0 m2

Composites have moved on in technology since they became commonplace in the marine construction industry in the mid eighties. However most builders still are using the same methods and products that they became familiar with in the mid eighties. CarbonIndex use a wide variety of products and suppliers and work with them to develop new more cost effective build techniques which are passed on as a saving to the customer.

The CarboIndex rib is built with epoxy resins, carbon fibre and other traditionally expensive materials, yet the price of our ribs is comparable with those built from conventional and inferior materials and the resulting rib is a lot lighter than the others on the market.

The advantages of a lightweight rib are many and varied, for example, the hull can be built with a sharper v shape hull and yet still plane early, a smaller engine is needed to achieve the same speeds, (typically our 8.5m rib will run at the same speeds as a similar rib but with half the horsepower engine, and half the fuel bill). Being lighter also enables larger and heavier pay-loads to be carried with out the loss of a high average speed.

Our rap round tubes enable boat to manoeuvre on and off pontoons and yachts with greater ease and without the chance of damaging the stern drive.

We're targeting a light mode displ of 1500kg, laden 2000kg, with an LCG between 4m & 5m aft of stn 0.

Speeds are nominally 40kn, but with a view to making 50, and deadrise aft is 21, amidships is 26, average over the planing area is 23.

rib

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