Lost soft toy "Jo Jingle"

My son lost "Jo Jingle"', a soft toy boy doll with bright yellow hair, red jacket and yellow trousers, on a Hull to Zeebrugge ferry last October (2012). He still hasn't got over losing him and only last night was in tears, asking for him back. I've tried offering a replacement without success. It breaks my heart to see him so upset and we even have to avoid looking through family photos in case Jo pops up, as he came everywhere with us. Did you see Jo on the ferry last Autumn?! We've been in touch with both P&O ferries and their laundry company, but they don't have him. Please get in touch if you can help.