You've seen the start and the conclusion of the story already. Well, this is just a taste of what Charlie and Martin had as their 'main body'. The first photo is one that Koos took as he chased them along the Maas on his scooter. The rest were taken by C & M themselves as they ploughed across a choppy channel. It looks cold and forbidding, albeit bright, but I think they looked really happy all the same.
This was apparently a barge called Slobber that they went in convoy with. As Charlie said, the name was very funny when trying to communicate on the VHF!