I spotted this scene a while back when I was down at Kawaihae. This is one of the inter-island barges entering the harbor. Often when this happens, a smaller local tug will go out to help with the business of getting the barge safely into port and alongside the jetty.
The helicopter was something I hadn’t seen before. At first, I thought it was just passing by, but then I saw it circling. Even though I couldn’t make it out, I suspect there was a photographer on board, taking photos or shooting video on behalf of the port or the company that ships freight between the islands.