Excerpt: "Iran said the torpedo tests were conducted Sunday and Monday.
The
torpedo -- called a "Hoot," or "whale" -- is able to move at 223 mph, too
fast for any enemy ship to elude."


223 mph ?? Does that number sound correct ?


A tube with a high density (water) projectile cap at one end and a rocket
motor near the other end may go even faster. Care has to be taken that
sufficient velocity is reached before water can enter the tube and
extinguish the motor as well as fins, guidance and other particulars.