I went to the marina office yesterday. They were very good. They said they could only release camera footage to the police, which they were happy to do. I went to the police to file a report. They couldn't be less interested. The lady behind the counter said they would take the details but would not be doing anything about it. She then put on her best patronising tone and said I should check the boat more often and take the electronics home. I can't say they impressed me much. Unfortunately my excess is reasonably high to keep the premium a bit less nasty, so no point claiming. First time in 35 years that I've had a boat burgled, not a great feeling.