I'm new to all this, so please forgive a basic question, which is this: I have 2 SSB radios that were aboard the boat I bought, and prior to that a friend gifted me a Kenwood HAM.  Question is, is one better than another for worldwide comms, ?  I'm looking at this from a preppers point of view, the HAMs seem to rely on repeaters, which are vulnerable, the SSB doesn't, or am I missing something ?  ANY guidance would be greatly appreciated.
Thank Y 'all,
Fatholm42