In a charter base the unit of time is neither the month nor the week: it is the turnaround. A catamaran comes in on Saturday morning and leaves again on Saturday afternoon. In between, someone has to establish the condition of the boat, repair what needs repairing, restock, and hand the keys to a client who has paid full rate. Whatever is not dealt with in that window goes back out to sea for a week. That is where the profitability of a charter fleet is decided, and it is pre