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%
15%
73%
10%
19
flagLithuania
0%
7%
61%
30%
13
flagthe United States
7%
17%
59%
13%
580
flagGermany
11%
11%
59%
16%
137
flagthe United Kingdom
12%
13%
55%
16%
377
flagCanada
16%
8%
54%
18%
37
flagPoland
11%
17%
52%
17%
12040
flagthe Netherlands
13%
13%
52%
19%
36
flagUU
13%
20%
48%
13%
29
flagSpain
23%
4%
47%
19%
21
flagRepublic of Ireland
33%
5%
46%
12%
39
flagNorway
16%
18%
43%
21%
37
flagItaly
12%
18%
43%
25%
16
flagBelgium
28%
0%
42%
28%
14
flagIndia
23%
26%
41%
8%
60
flagAustralia
11%
23%
41%
20%
34
flagSwitzerland
25%
16%
41%
16%
12
flagFrance
13%
27%
40%
13%
22
flagthe Philippines
38%
23%
30%
7%
13

Gender

men54%
women43%
it was a great success and the main threat for US Navy
10%
13%
it was a success, over 50 ships were sunk
17%
17%
it was a disappointment
54%
43%
it was never used
17%
26%

Language versions

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answers
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How successful were the human torpedoes, developed by the Japanese during the WW2?
1007
54%

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