Also, look at:	Security deposit On bareboat, upon embarkation you will need to leave with the agency a refundable deposit to cover any loss or damage during the trip, that is not covered by the vessel's insurance.			related sites
Sidenote The amount of this deposit varies with size and value of the yacht and it may be paid in cash, traveller's cheques or major credit card prior to embarkation.  Alternatively, some agencies accept a waiver instead of a refundable security deposit.