I am going to go out on a limb here Wouter and say that a hull of equal dimension, shape etc being forced through water has more drag than that same hull planing over the top of the water.
As an premise for further development and research that is a tenable position even though it is not the obvious one to take.
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That is why that hull traveling through water needs more power to make it travel....hence the word "force" in the description "force moded".
This is just nonsense. A planing hull also needs more power in order to travel faster, in fact you totally misapply the word power here. It is physically possible (and actually does happen in some cases) were the driving force descreases when travelling faster but the required power rises. This is because "POWER" is the product of "driving force" and "speed". If the speed increases more then driving force decreases then you get into this situation. Several dinghies that transition from displacement sailing to planing actually go through such a situation. So I propose that we'll only using the driving force and no longer the concept of power.
With respect to "forced mode" We must be careful to not read more into a given word then there is too it.
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In regards to the T traveling faster than the skiff it may be that the huge rig and wings and extra crew etc of the skiff create MORE DRAG via windage than the T.
Or is may just be that long slender hulls on a lightweight platform in forced mode lead to lower drag at 20-30 knots speeds then a planing hull of similar length.
Wouter
Wouter Hijink Formula 16 NED 243 (one-off; homebuild) The Netherlands
