Jonathan Ellis wrote:It seems to me that the katana is very similar to the longsword with similar lengths...
My understanding is that traditional katana are somewhere in the 70-90 cm range in length. Longswords are somewhere in the 105-125cm range, with some longsword
blades being longer than an entire katana.
Jonathan Ellis wrote:...weights...
Katana and longswords are more or less in the same weight class, but katana are, as noted above, significantly shorter, making them much heavier per inch of weapon. This gives a much different sensation of weight than a longsword.
Jonathan Ellis wrote:...and balance
The center of balance on katana is different, proportionally, than a longsword. As Aaron noted, it is further down the blade, more towards the tip than the grip. This affects handling characteristics.
Jonathan Ellis wrote:thus the only difference in the blades would be the emphasis on slashing over thrusting that the swords exhibit.
I think there is more to it than that. Keep in mind also the subtleties of the weapons - a longswords crossguard is not like that of a katana; katana do not have two edges; the edge geometry and blade construction of the katana differs from the longsword; etc.
Jonathan Ellis wrote:With this in mind, could the techniques of the longsword/ hand and a half sword be used with a katana?
Anachronisms aside, sure. But by the same logic, you could play tennis with a badminton racket.
Longswords and katana are similar, but different, tools of war. Different techniques developed over
centuries for use with each. It happens that because both are relatively long sharp pieces of metal wielded in two hands (sometimes one) by a human, there are some similarities.
Jonathan Ellis wrote: ...the katana seems to be made stronger than european swords of the same weight and length classes.
I'm not sure what you mean by "stronger". Would you mind explaining?
Michael Olsen