Intelligence is a vital part of any strategic submarine conflict.
entire lines of uboats were gathered by donitz re routed by
Wynn and rolled up by hunter killer groups.
Thats the power of intelligence it guides the gun hand.
Complete patrol lines of submarines gone.
Donitz must've had some horrible nightmares.
somethings are less obvious
in the commonwealth the simple reciprocating
steam plant had been standard almost since the
WWI flower class
(the real progenitor of modern escorts)
it was totally familiar to all those civilian sailors
who signed up it was underpowered and innefficient
but it had the virtue of simplicity and total producability
all over the commonwealth, it enabled the numbers of
ships. HP boilers etc werent that common steam turbines
for high end or simple steam for the workhorses.
theres an endless list of influencing factors
thats the best part
you can study it every day all you life and
learn something new about it every day all of your life.

(big job)