Who Was the Master Spy in Hawaii
What do you know about Japanese
spies in Pearl Harbor?
Take this World War II History Quiz.
"Check Your Answers" at the end
of the page.
Take 2 points for each right
answer. Maximum this page: 20 points!
1) When did Japanese Admiral Yamamoto brief Captain Kanji Ogawa
of Naval Intelligence on the potential attack plan, asking him to
start intelligence gathering on Pearl Harbor?
- February 3, 1940
- August 3, 1940
- February 3, 1941
- August 3, 1941
Captain Ogawa already had spies in Hawaii, including Japanese
Consular officials with an intelligence remit, and he arranged for
help from a German already living in Hawaii who was an Abwehr
agent. None had been providing much militarily useful information.
3) By the spring of 1941, Yamamoto
officially requested additional Hawaiian intelligence, and
29-year-old Ensign Takeo Yoshikawa boarded the liner Nitta-maru at
Yokohama. He had grown his hair longer than military length, and
assumed the cover name Tadashi Morimura.
What was the name of
the ocean liner?
4) Yoshikawa began gathering
intelligence in earnest by taking auto trips around the main
islands, and toured a Hawaiian island in a small plane, posing as
What was the Hawaiian island?
5) Yoshikawa visited Pearl Harbor frequently,
sketching the harbor and location of ships with his deep sea
6) Yoshikawa gained
access to military base in a taxi, memorizing the number of
visible planes, pilots, hangars, barracks and soldiers.
was the military base?
- Wheeler Field
- Hickam Field
- Soldier Field
- Schofield Barracks
7) What day did
Yoshikawa discover was the day of the week on which the largest
number of ships were likely to be in harbor?
8) His reports were transmitted by the
Japanese Consulate in code to the Foreign Ministry, which passed
them on to the Navy.
What was the code known as?
9) When he heard the "East wind,
rain." code phrase on the short wave radio bringing the news from
Tokyo signaling an attack against America, Yoshikawa destroyed all
evidence of his activities.
was the code phrase?
- “South calm, ice”
- “West wind, fog”
- "East wind, rain."
- “North storm, sunny”
10) When the FBI picked him up on the
day of the attack there was no incriminating evidence of his
espionage. Yoshikawa eventually returned to Japan in in a diplomat
prisoner exchange. It was not known for some time that he was the
chief Japanese agent in Hawaii.
When was the exchange?
- August 1942
- August 1943
- August 1944
- August 1945