Hey Alan, do you know just how jealous I am of you!
Alan, Chris grateful thanks for your efforts on this one.
Lefty, the image is one of a series but is just my favourite one as it shows men and machine in perfect harmony. My take is that they all cliombed out the upper hatch for the cameraman on the day, as they are posed in other images in the series, and when he was satisfied they climbed back down again.
Entry and exiting the a/c was usually through the port front doorway you can see here, into boats.
I have more reference material if you need it.