BOAT-COMPARATOR Guide

Marina Fees and Port Dues: The Budget Line Everyone Forgets When Renting a Boat

A night in a marina often costs more than expected. How port fees actually work, what they cost by boat size, and how to keep the bill under control on a charter.

The price shown for a boat rental almost always covers the boat alone — not the nights spent alongside during the trip. Over a week's cruise on a catamaran or sailboat hopping between stops, marina fees can add up to a budget line as heavy as fuel, and it's usually the one renters discover only once they're out there, harbourmaster's office after harbourmaster's office.

Who charges what, and why

A marina is an infrastructure that lives mainly off its berths: water, electricity, sanitary facilities, security and pontoon upkeep are all funded by the fees paid by the boats that stay there. A recent study of Croatian marinas, which examined the links between natural resources, infrastructure and operating revenue, found that berthing services are the main source of income for these facilities — which is why pricing is calibrated so precisely to boat size (Marušić, Šoda & Vujović, Environmental Earth Sciences, 2024, see the study on Google Scholar). In practice, when you book a boat you almost never book its future stops as well: every marina you visit charges its own nightly rate, independent of the operator or the platform used.

What it actually costs

Overall length is the main pricing factor, with beam mattering mostly for catamarans. As an example, Port Canto in Cannes lists 2026 visitor rates running from roughly €33 a night for an 8-metre boat to €63 for a 14-metre one, water and electricity included — a range that holds, give or take a few euros, across most marinas on the French Mediterranean coast. Many marinas also apply a much softer off-season rate: in La Rochelle, for instance, the visitor rate is cut in half outside the 1 May to 30 September window. On a 12–13 metre catamaran in high season, expect closer to €60–100 a night depending on the marina; a smaller boat or an off-season stop can drop below €30.

The "noon to noon" trap

Almost every harbourmaster's office bills a full night for each 24-hour period starting at noon, rather than between your actual arrival and departure times. Arriving at 11:30 am and leaving the next day at 10 am can therefore be enough to trigger a second full night if the boat is still alongside after noon on departure day. The right habit: ask the harbourmaster for the checkout deadline as soon as you arrive, rather than finding out on the invoice.

Free anchorage or paid marina

Not every night of a cruise has to be paid for at a harbourmaster's office. Plenty of bays and coves allow free anchoring, provided the rented boat is set up for it — enough water and power autonomy, an anchor sized for the seabed. Our guide to anchoring etiquette covers what to check before relying on it for a whole week. Alternating free anchorages with paid stops is still the simplest way to keep a budget under control, saving the paid nights for the stops where you actually need to recharge batteries, make water, or simply go ashore for dinner.

How to keep the bill down

• Book your berth ahead where the marina allows it: last-minute spots, often the least convenient ones, aren't any cheaper, and turning up without a reservation risks having to hunt for a free pontoon on arrival.
• Look into loyalty schemes offered by some Mediterranean marina networks: a modest annual pass can include several free or discounted nights.
• Check whether the home port is included in the rental price: it often is for the first and last night, rarely for stops in between.
• Ask the operator about costs before setting the itinerary rather than once at sea: a local skipper usually knows the going rates at nearby marinas and can steer you toward a cheaper stop just a few miles away.

A cost to plan for from the start

Like fuel or the security deposit, marina fees are one of those costs that never show up in a listing's headline price but weigh very real on the final budget of a week at sea. Our guide to what a boat rental really costs rounds up all these line items.

Boat-Comparator compares live offers from Boataround, SamBoat and Click&Boat for the same boat and the same home port — freeing up the budget saved on the rental itself for the stops that actually make the trip.

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Also worth reading

• How much does it cost to rent a boat in 2026? Real prices
• License-Free Boat Rental in France: Rules, Prices & Where to Book
• Renting with or without a skipper: how to choose