thanks to Peabody and Neon Deon I foudn where the base armor was located and, to my suprise, I foudn out that the JB only had armor=10 when the Balao had 25 and the Porpoise (a quality like for the JB ?) has also 25 !
so I set the JB so :
armor=25
Hitpoints=750 because it is a larger boat
crashdepth=240
that should help some. for those 25 who are tryin the mod, open the zon file with s3d and open collisionable objects, you'll find the values seen here above, you can either change them or wait for the next mod version.
New mod 1.1 with armor corrected for all japanese subs (Kaichu not included) and Jyunsen B and Jyunsen 1M spheres and boxes done :
download :
http://files.filefront.com/IBDM+JB+0.../fileinfo.html
keltos