Tank Testing (Take 2)

Time for the second set of tank testing. This time with the new hull! Same tank as last time (Solent Uni) but this time with a bigger model. We went for a 1/3 scale model instead of the 1/4 scale that we used last time to give us more weight to play with. Last time it was very difficult to do everything with 200 grams of ballast weight, this time we have 2.5 kilos to move about!


This was one of the endurance runs. You can see the trim has been adjusted to get the bow in the water and the transom just out of the water. This gives the lowest resistance at the stern of the boat and only slightly increase wave making resistance (energy used to make the wake). This looks like it could be a winning design for the endurance race...


This is a sprint run. So shouldn't the bow be out of the water? Well no. The model was fitted with an interceptor (a trim control device) to keep the trim flat and reduce resistance - you can see the spray from the interceptor at the stern! Amazing what 5 millimetres of vertical planking at the stern can do!