A ship is sunk by a sub.
The next two parts are interviews with Asano and Nagano.
The film continues after the interview with the guy going over the numbers of ships sunk by U.S. subs.
Whoever is the speaker says there is no more Japanese merchant marine. U.S. subs sunk 63% of their ships.
The leader talks about how civilians early in the war had learned things about U.S. subs and they leaked this to papers. The Japanese picked up the information and were able to alter their destroyer tactics to make their attacks on subs more effective.
The attack on Pearl Harbor is discussed.
The U.S. had 51 subs at the time.
A week after Pearl Harbor the U.S. sinks its first Japanese ship.
Another ship is sunk in early January off the coast of Japan. I'm not putting any names of the ships since I cannot really make out what the narrator is saying.
1942 Damage total.
The U.S. sub Trigger.
On their maiden voyage they sink a merchant ship off the coast of Kyushu.
They damage a Japanese carrier, the Hiyo. The carrier was out of the war for around a year.
The sub was later sunk.
1943 total damage to Japanese ships.
A U.S. sub is scuttled, and the commander and another man go down with the sub on purpose since they know “too much” and don't want to fall into enemy hands.
An R&R program is set up for the men in the submarine service.
1944 damage.
Subs also fired from the surface on small ships, and sometimes on slightly larger ones.
The subs were also used to pick up downed U.S. crewman of bombers and fighters.
They pick up some prisoners.
They pick up a downed crewman from a plane. More than 500 aviators were rescued by the subs.
By the summer of 1945, targets were becoming limited in number.
