Submarines sail in ocean during World War II

During WWII, submarine production saw a dramatic increase. In 1942, production time was reduced to one every seven months, and by 1944, ten submarines were produced monthly. This increase highlighted the strategic importance of submarines, allowing American forces to operate in areas inaccessible to other Allied personnel.

What was the production time for submarines in 1942?

How many submarines were being produced each month by 1944?

What was the significance of submarines during the war according to the text?

What percentage increase in production was aimed for during the war?

What advantage did American submarines have over other Allied personnel?