The fear was that Japanese Americans represented a security threat to the US and that they might rendezvous with submarines at sea to pass intelligence. There is no indication of any disloyalty by Japanese Americans in the records of WWII.
no
they were simple boats packed with explosives and crashed into allied ships in world war 2.
i doubt that Jews were hunting fishermen.
yes
The possessive form of plural noun fishermen is fishermen's.Any plural that does not already end in an S will add apostrophe S. Plurals that end in S use only the apostrophe (e.g. fishes - fishes').Example: We watched the fishermen's boats in the distance.
I-Boats were WWII Japanese submarines.
Yes, boats are used for both business and pleasure.
Coastal fishermen could be saved from a tsunami by taking their boats out to sea. A tsunami does not become particularly tall until lit reaches the shallow water near shore.
Title Fishermen and boats in the Pont de Clichy Date Paris, Spring 1887
Japanese Suicide-plane attacks on Allied ships. The planes dive-bombed and crashed into Allied boats.
If you are meaning to U-boats as in World War two? Than U-boats certainly mean "Underwater Boats"
Approximately 69 WWII (wooden) PT Boats were destroyed by enemy action; this includes LTjg Kennedy's boat which was cut in half by a Japanese destroyer in the Solomon Islands.