None of the katas ever had applications in mind when they were created. They are used to teach concepts, not the application of those concepts. (At least thats what I understand)
Secondly begining with short 3 up through long 6, are entirely made up of SD techs right off the list.
Short 3 is as follows
1. Destructive twins (2 hand lapel grab)
2. Crashing Wings (bearhug from behind arms free)
3. Twirling Wing (rear choke)
4. Circling wing (rear choke)
5. Crossing Tallon (wrist grab)
6. Scraping Hoof (full nelson)
7. Fatal Cross (low push)
8. Grip of death (flank head lock)
9. Locked Wing (hammer lock)
10. Crossed Twigs (double wrist grab from behind)
11. Wings of silk (double arm bar)
12. Conquering Shild (lapel grab)
13. Striking Serpent's Head (bear hug from the front *someone trying to pick you up*)
You'll notice for Short and Long 3 all the self defense techniques are for a grappling situation. My instructor refered to the 3's as the wrestling forms.