Although there's no luggage limit, we advise you to bring a soft collapsible duffel bag, instead of a hard-shell suitcase. This is due to the valuable living space they will occupy, meaning less room for you and your pals to relax on board your yacht.
Take a look here for more guidance on luggage options.
We do have a storage unit in Baotic Marina, Croatia, where you can store luggage for a few euros a day. Please note that you may depart from a different marina, so make sure to double-check with your skipper to confirm if your marina offers a storage facility, and they will be able to advise you on that.
* Please note this is not 'essential', but we reckon you would definitely appreciate the extra space!