The YachtBooker Support team is taking care of your request concerning the Yachtsys® System.

If a yacht is deleted can you still see its history?

In short, yes. If you want to access the yacht, go to Configuration> Yachts and check the box Show deleted Yachts. This will display boats that you have previously removed.

The yacht's history (bookings, invoices etc.) can be accessed from their respective sections of the system, this data is never deleted is remains in the system for your access at any time.