Which country mass-produced speedboats packed with explosives as a weapon during WW2?

Germany
Russia
Japan
Italy
The Shinyo ("Sea Quake") were Japanese suicide boats, driven by one man, to speeds of around 30 kn (56 km/h; 35 mph). Around 6,200 Shinyo were produced for the Imperial Japanese Navy and stored on the coast of Japan for the ultimate defense against the invasion of the Home Islands. Only a small number of them were used in action in the Phillip­ines and Okinawa, sinking some gunboats and aux­il­iary ships.

Answers distribution

Germany
Russia
Japan
Italy
answers
flagSwitzerland
5%
2%
92%
0%
40
flagSpain
10%
2%
82%
5%
39
flagItaly
4%
7%
76%
11%
42
flagNorway
7%
7%
75%
10%
57
flagDenmark
11%
7%
74%
7%
27
flagSweden
10%
6%
73%
10%
49
flagPoland
12%
6%
70%
9%
26471
flagGermany
13%
6%
70%
8%
346
flagthe Netherlands
11%
11%
70%
6%
81
flagFrance
11%
4%
70%
13%
61
flagthe United Kingdom
11%
6%
68%
11%
764
flagUnknown
12%
7%
66%
13%
1650
flagCanada
22%
7%
57%
11%
71
flagthe United States
20%
8%
56%
12%
1012
flagAustralia
15%
7%
55%
18%
69
flagIndia
28%
10%
54%
5%
77
flagBelgium
23%
16%
53%
6%
30
flagRepublic of Ireland
24%
6%
50%
16%
77
flagRussia
28%
4%
48%
20%
25
flagthe Philippines
25%
25%
45%
4%
24

Gender

men67%
women68%
Germany
12%
12%
Russia
7%
8%
Japan
67%
69%
Italy
12%
9%

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Which country mass-produced speedboats packed with explosives as a weapon during WW2?
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Author: Cleo
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