| http://www.w3.org/ns/prov#value | - However, to obtain a more complete understanding of the vehicle???s hydrodynamics, additional towing tank tests and computer simulation are required, because (i) performing sea trials is costly and exposes risks to the vehicle, (ii) data such as forces and moments are not measured during a free-running trial, and (iii) the effects of environmental loads and control actions on the manoeuvring are i
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