Vava II helicopter pilot

There is definitely a licensed helicopter Pilot for the time the helicopter is on board. I pretty much doubt there is a captain working as a Pilot at the same time out there. So at least one Pilot who is also responsible for the maintenance.

From my own experience being on several vessels with machines and knowing a number of folks on other ones The pilot is generally a commercial pilot with dry ink on his license. Some may have other duties which vary. I know of only one who was also a fully certified airframe and power mechanic who could do his own maintenance. The rest either take the machine somewhere or call someone.

Our pilot is just that- a pilot. His job is keep the machine clean, fueled, and to be ready to fly at any time. There are hours of boredom, but when they want to fly he needs to be ready and rested.
Although he isn't expected to, he does help out in a few other areas. He's a line/fender guy when we are pulling in/out of the dock. He often runs errands around town for people who don't have time to step ashore. He also helps out with keeping the crew mess tidy. He will generally also offer to pull watch on someone's behalf when we hit the dock and the crew wants to go out on the town. But these are all out of the kindness of his heart.

That sounds very much like the pilot with the engineering tickets I described above. He used to do an engine room watch when it suited his operational needs instead of us doing 6 on 6 off.

One of my buddies have been doing relief work as a heli pilot on a 240' yacht while the regular pilot was on vacation and days off.
He had no additional duties except to keep the chopper clean and ready to go anytime.
Ideally a Yacht helicopter pilot holds an A&P license so as to perform routine maintenance and sign off inspections.
(A&P = Airframe and Powerplant Mechanic)

It would be a rare situation to have the Yacht Captain fly the helicopter, each job requires lots of experience and qualifications and there is little or no overlapping.

Another buddy of mine was flying a Gulfstream III jet for an owner and he also Captained his 65' yacht on Florida to Bahamas trips but he was not comfortable on the boat. He called me a few times to ask about Bahamas check-in procedures and details on marinas im the Exumas, etc.
The gig did not last long and he ended up on a G-4XP for a different owner.