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
9%
0%
90%
0%
21
flagSpain
10%
2%
84%
2%
38
flagItaly
4%
7%
76%
11%
42
flagNorway
7%
7%
73%
11%
53
flagDenmark
11%
7%
73%
7%
26
flagPoland
12%
7%
70%
9%
25669
flagGermany
13%
7%
70%
8%
327
flagFrance
11%
4%
70%
13%
61
flagthe Netherlands
11%
11%
69%
6%
79
flagSweden
11%
7%
69%
11%
42
flagthe United Kingdom
11%
6%
68%
12%
714
flagUnknown
12%
7%
66%
13%
1615
flagthe United States
20%
8%
56%
13%
949
flagCanada
23%
7%
56%
11%
69
flagAustralia
14%
7%
55%
19%
67
flagBelgium
20%
17%
55%
6%
29
flagIndia
29%
9%
54%
5%
75
flagRepublic of Ireland
25%
6%
50%
17%
76
flagRussia
28%
4%
48%
20%
25
flagthe Philippines
25%
25%
45%
4%
24

Gender

men67%
women68%
Germany
12%
12%
Russia
7%
8%
Japan
67%
68%
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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