How successful were the human torpedoes, developed by the Japanese during the WW2?

it was a great success and the main threat for US Navy
it was a success, over 50 ships were sunk
it was a disappointment
it was never used
Kaitens had a very limited diving depth, which in turn limited the diving depth of the host sub­ma­rine. This is one of several factors blamed for the very poor survival rate of sub­marines armed with kaitens: eight sub­marines being lost for the sinking of only two enemy ships and damaging several others.

Answers distribution

it was a great success and the main threat for US Navy
it was a success, over 50 ships were sunk
it was a disappointment
it was never used
answers
flagNew Zealand
6%
0%
80%
13%
15
flagSweden
0%
19%
66%
14%
21
flagLithuania
0%
7%
61%
30%
13
flagGermany
12%
13%
59%
13%
172
flagthe United States
8%
17%
58%
15%
675
flagthe United Kingdom
12%
12%
57%
14%
454
flagthe Netherlands
13%
13%
55%
16%
43
flagBelgium
22%
0%
55%
22%
18
flagPoland
11%
17%
54%
16%
13784
flagAustralia
10%
19%
53%
14%
47
flagCanada
17%
7%
53%
17%
39
flagUnknown
13%
20%
50%
14%
100
flagRepublic of Ireland
30%
6%
48%
11%
43
flagSpain
21%
8%
47%
17%
23
flagItaly
10%
21%
47%
21%
19
flagSwitzerland
20%
20%
46%
13%
15
flagNorway
17%
19%
43%
19%
41
flagFrance
10%
21%
42%
17%
28
flagIndia
22%
27%
40%
8%
61
flagthe Philippines
38%
23%
30%
7%
13

Gender

men54%
women44%
it was a great success and the main threat for US Navy
10%
13%
it was a success, over 50 ships were sunk
17%
16%
it was a disappointment
54%
44%
it was never used
17%
25%

Language versions

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answers
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How successful were the human torpedoes, developed by the Japanese during the WW2?
1144
54%

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