Indeed the language barrier is curious.
Coupled with the fact that these guys are out in a boat in the dark and fog.
Why did they mention the Pomham Lighthouse?
According to the article they were found far from the lighthouse. IMO, they had either already been there, or it was a destination.
So what is it about, around or near that lighthouse that needs attention?
Is it far out and secluded?
Good meeting place?
the first article said that the intruders had forced entry.
Maybe to pick up explosives, men or messages?