This is a video of a QSO with German station DK2NE (operator: Detlef) on the 20m band using my Clansman PRC-320.
And in this other video I am operating maritime mobile with the same German station:
When maritime mobile I use an 8m-long whip with an FC-40 autotuner. In this case, I was inside the port so there was a lot of noise form the city. Someday I will post some video operating the station away from the coast for you to see the difference.