Here’s a video showing a pilot transfer in far-from-ideal conditions outside Milford Haven, Wales. The tanker is BP Shipping’s 2003-built Aframax crude oil tanker British Robin. As you can see, the pilot makes his way down the ladder as the ship rolls heavily in the wind and waves.
While the video cuts just short of showing the actual transfer, it goes to show the dangers these pilots face just doing their jobs, as well as the skill needed to pull transfers like these off safely. According to the uploader, the pilot boat is the Picton and the video was filmed on January 15, 2015.