RADIO MSG RECEIVED
During the war the Navy sent the Subs, "FOX Broadcasts" in burst. i.e., they recorded 18wpm morse code msgs at 300wpm, then broadcast the high-speed (for the times) msgs to the fleet.
The RM's aboard the subs had recording equipment on board that could copy the burst then play it back at slower receivable speeds.
The 300wpm morse code sounds like a "buzz" and only takes seconds to deliver. Radio Frequency propagation depended on a lot of variables(still does), and IIRC, an 11 year sun-spot cycle was heading for it's maximum during the war years, peaking around '47; but, provided frustrating occurrances of garbled text...for real. This resulted in the RM's attempting to get "fills" of the missing msgs on subsequent transmission skeds.
Those of you who've had military radio experience know what I'm talking about. Even today's Satcom mode(s) can be frustrating as well..."Can you hear me Now?"
Radio msgs in subsims are all, too easy to understand and convenient. What if you received a msg to rendezvous with a downed pilot at, say...
30-14N, 156-1_E
oops, looks like the last number in the longitude was garbled. Think you can make station and find the pilot? Think it could be a matter of life or death? Ya think we need to get a fill on the msg?
EDIT: I know, that example was too easy...how about this, 30-14N, 156-_9E...there, that'll give you 60nm to play in.
...I donno, to me this scenario is far more important than baby-sitting a watch bill. Who in the Navy ever sweats the "small stuff"?