We at African Cats
build in 4 separate tanks
all positioned on either side of the mast
For shorter cruises the 2 inner tanks
are filled and optionally we can open valves to increase tankage to 180 US gallons.
the left or right tank can be used and the back flow of diesel
is also directed to the tank where the flow is set from.
In the save weight department we have made drastical effort to get the weight down from the original 9000 kilo,s or 20.000 lbs to the 5000 kilo (11000 LBS )that the last boat came out at.
Some of the weight saving where simple , taking the 50 meters of 10 mm galvanized
and change it for 25 meters of Duplex 8 mm chain and 25 meters of weighted line.
Just this change saved over 100 kilo or 220 LBS. chaging from glass windows to Lexan
marguard saved another 115 kilo or 255 Lbs
The biggest single
weight saver was taking the lead acid batteries out and putting in Lithium Ion Phosphate. this saved over 200 kilo,s or 440 LBS
All cabinets and locker spaces are build within 10 ft or 3 meters of the centre of gravity. the anchor
chain locker is under the mast
step together with the winch
The generator and the batteries are mounted under the nav station and seatin area right on the centre of gravity.
We changed from Lewmar
winches to Harken
and Meissner winches and this was also a good one , 40 kilo,s ( 88 LBS ) less on the scale .
Are cats are build on 4 load cells so during the building time we can measure all weights coming on board and we can keep the weights at the right locations .
Another weight saver is chaging the porcelin Toilets most of you use to the RM 69 Plastic toilet, a weight saver of 25 k. or 55 LBS per toilet.
Changing from a normal powr distribution system to a Buss system saved 128 kilo,s or 280 LBS.
For the Rigid inflatable
we changed from a 85 kilo Caribe to a self build carbon fiber and Hypalon Rigid inflatable
in the same size but a weight of only 28 kilo.
Because of this change we could reduce the size and strenght of the davits
for a weight saving of 85 kilo.The ouitboard became smaller in the process, before it was a 10 HP Suzuki 4 cycle long leg with a weight of 39 kilo,s excluding the tank and now we use a 6 HP Tohatsu 4 Cycle with a weight of 19,6 kilo with a build in tank.
All control lines where changed from normal polyester to Dyneema
The side stays where changed from 12 mm Dyform to Dyneema
side stays . 66 Kilo,s
The roof originally constructed with glass and foam is now constructed with Carbon Fiber 110 kilo.We left out the Gell and flow Coat and now use Spray paint
the boat with Awl Grip.This saved 850 Kilo,s. Optionally we install a carbon fiber mast and Boom for 185 kilos of weight saved.
We left out all inner linings originally made in Fiberglass/Epoxy 225 Kilos