So, it may so happen that if there are large changes in vertical component of the force, in the fore part and aft part, the vessel may actually trim, but if I am maintaining kinematic similarity of flow, then whatever trim the ship will face my model will face the same trip, geometrical similar trim- do I, do you, I am making myself clear? So, when I am talking of this trim, this is in addition to that trim, all you have to take care is this does not cause any trim. So, as I said to about 0.3 Froude number there is no visible trim of the vessel and there is no visible trim in the model. So, this method is more or less, but
one has to use one’s own perception of the resistance force how it is acting. For other cases, particularly high speed vessels when we are going beyond 0.3 and the pressure forces do cause a trim, how the tow rope, tow hook position should be for applying the (( ))? Do I make myself clear?