My boat was stolen & trashed and looted

I have been in Australia the last 6 months in which I had to leave in a hurry to attend a family emergency. I left my houseboat in the care of a friend who had helped build it.  While i was away this "friend" decided he didnt want to look after or check on the boat anymore so he gave it away to some homeless people, without asking or notifying me. (Safe to say this person is not a friend anymore and didnt even offer an apology) . I didnt find out until I returned to Berlin 6 days ago and found my boat in a different location, trashed and ransacked of all my belongings  I had collected over my last 7 years in Berlin. 

The boat use to look like this. 
and this
I have had my suitcase stolen with all of my clothes, guitar and vocal fx pedals, my busking PA system, cables, microphones, computer tablet, as well as personal letters , drawings and gifts from friends and couchsurfers I had hosted. 

The kitchen was also demolished/ stolen , including the bathroom, all my bed sheets, pillows, pots , pans, stove, curtains, BBQ , engine , batteries and solar panels were also missing. 

Not to mention the boat was now filled with trash, I was looking forward to returning to Berlin to start a new year of creative projects with friends but have spent the last week with the help of some friends cleaning up the boat and having to inform several homeless people this boat was illegally given to them and is not there property. The whole situation has been mentally and physically draining, it almost made me consider leaving Berlin. 

I hate doing these sorts of campaigns but any help , any at all would be greatly appreciated even 5 euro. 

Thanking for your time.