These are the most frequently used words in this book.
1942
1943
1944
1945
air
approximately
april
armament
available
battery
boats
building
built
carried
cent
compartment
construction
contract
control
delivery
design
development
diesel
diving
during
electric
end
engine
first
following
frame
further
german
given
gw
however
hull
installation
july
june
kiel
knots
large
march
maximum
may
miles
months
motor
nautical
naval
navy
necessary
new
now
number
october
office
operational
operations
order
part
per
possible
pressure
production
programme
project
propulsion
range
room
section
ship
should
small
speed
steel
submarine
submerged
supply
surface
tank
test
time
tons
torpedo
torpedoes
total
tubes
two
type
use
used
viic
walter
war
water
work
xxi
yards