Since the Yamato was sunk by carrier planes and not torpedos, we don't know how many it would take to sink it. The Shinano super carrier which was built on the same hull was likely taken out by one torpedo hitting at just the right angle to push a support through a boiler. Although several torps were fired at it, only one penetrated. You should complain it took too many.
No one is forced to read my rants. I see a lot of other rants here. One man's opinion is another man's lecture. If no one wants to read counter-opinion, they should not post in public or just skip everything with my name on it.
Archerfish web pages:
http://www.ussarcherfish.com/index1.htm
http://www.answers.com/topic/japanes...arrier-shinano
-Pv-