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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?Alan's Dad (WW2 Vet) - Trivia powered by ABE

  1. February 3, 1940
  2. August 3, 1940
  3. February 3, 1941
  4. August 3, 1941

2) 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.

  • True or False?

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?

  1. Minami-Makigahara
  2. Nitta-maru
  3. Ryokuentoshi
  4. Yayoidai

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 a tourist.
What was the Hawaiian island?

  1. Hawaii
  2. Kenai
  3. Maui
  4. Oahu

5) Yoshikawa visited Pearl Harbor frequently, sketching the harbor and location of ships with his deep sea diving equipment.

  • True or False?

6) Yoshikawa gained access to military base in a taxi, memorizing the number of visible planes, pilots, hangars, barracks and soldiers.
What was the military base?

  1. Wheeler Field
  2. Hickam Field
  3. Soldier Field
  4. 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?

  1. Sunday
  2. Tuesday
  3. Thursday
  4. Friday

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?

  1. Red
  2. Green
  3. Purple
  4. Blue

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.
What was the code phrase?

  1. “South calm, ice”
  2. “West wind, fog”
  3. "East wind, rain."
  4. “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?

  1. August 1942
  2. August 1943
  3. August 1944
  4. August 1945

Who Was the Master Spy in Hawaii

1) A. 2) True 3) B. 4) D. 5) False. from the crest of a hill 6) B. 7) A. 8) C. 9) C. 10) A.

Score for this page: _______

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