Greyhound is a mid-budget movie based on CS Forester's "The Good Shepherd" and distributed on Apple TV+. The story is focused on "Greyhound", a WW2 United States destroyer commanded by Commander Krause (Tom Hanks). It and three other escorts are ferrying a convoy from the US to the UK during the Battle of the Atlantic. During the two days in the middle of the Atlantic where there is no air cover from the US or UK a pack of u-boats attack the convoy.

Greyhound and her mates are kept busy chasing, hunting and battling u-boats. The action is fairly intense and tactics seem realistic. There are only a few sets with everything outside Greyhound being CGI, though the CGI is well done and not jarring. It looks good enough that it would have looked good in a theatre (unlike the recent Midway which looks more like a direct-to-video movie). Overall it's worth watching.