sailer steve is spot on here. a dynamic campaign is a campaign where your actions can influence how it plays out, like falcon 4.0 for example.
none of the campaigns in the silent hunter series have been truly dynamic, they're random campaigns in every sense of the word.
i dont get the mass hysteria either

i assume there a lots of people here who remember the disaster that SH2 was with its terrible scripted campaign mode. this new campaign mode sounds streets ahead of that for sure.
ive got an open mind bout this SH5 campaign, it does sound interesting but time will tell i guess.