Crewed yacht charters are almost always quoted by the week, running Saturday to Saturday in most cruising grounds. The convention is operational rather than traditional.
Turnaround is a full day of work
Between charters a yacht is stripped and reset: cabins deep cleaned, linen changed throughout, tenders and toys serviced, and the interior returned to a standard that survives inspection.
At the same time the vessel takes on fuel and water, disposes of waste and receives a full provisioning delivery for the incoming guests.
That work occupies the crew for the best part of a day, and it happens whether the previous charter lasted three nights or ten. Short bookings multiply it.
Crew hours are the binding constraint
A charter crew works long days while guests are aboard, and the turnaround day is not rest. Rest has to come from the gaps between bookings.
Fixed changeover days let an operator plan those gaps across a season, which is what makes the schedule sustainable for the people running the boat.
Break the pattern with a midweek departure and the crew loses its recovery window, which is why shorter charters, when accepted at all, carry a premium rather than a discount.
Provisioning runs on a weekly cycle
Menus for a charter are built around a guest preference sheet completed before arrival, and the shopping is done in one operation at the base port.
Fresh supplies for a week can be carried aboard; beyond that the yacht must interrupt the itinerary to restock, which cuts into cruising time.
Seven days therefore sits close to the natural range of the vessel's storage, and the pricing convention has grown around that practical limit.
What the base rate covers and what it does not
The charter fee typically buys the yacht and its crew. Fuel, food, drink, port fees and taxes are usually handled separately through an advance provisioning allowance.
That allowance is paid up front, spent against actual costs during the charter and reconciled at the end, with the balance returned or the shortfall settled.
Because consumption varies enormously with itinerary and appetite, splitting the two figures is more honest than folding an estimate into a single headline price.
Why the calendar itself is priced
Cruising grounds have short peak seasons dictated by weather, and a yacht can only be in one place at a time.
The number of prime weeks available in a year is therefore small and fixed, which concentrates demand and makes the peak-season rate a scarcity price rather than a cost-based one.
Shoulder weeks either side often carry the same crew, the same vessel and materially better value, with the trade being less settled weather and a quieter shoreline.