Fill a 200-gallon tank at the wrong dock and the mistake costs real money: a $0.50-per-gallon spread between two marinas an hour apart is $100 on one fill, and spreads over a dollar are common. Marina fuel pricing is opaque - most docks do not publish prices, and the ones that do rarely keep them current. This guide explains why the spread exists, where to find live prices, and the habits that quietly cut a season's fuel bill.
- Marina fuel typically runs $1-2/gal above road prices: waterfront delivery, low volume, and dock overhead are real costs.
- Spreads of $0.50-1.00+ between nearby marinas are normal - the expensive dock is usually the convenient one.
- Ethanol-free gasoline and marine diesel are different products with different spreads; compare like for like.
- Phone calls remain the most reliable price check; live price maps are replacing them where marinas publish digitally.
- The biggest saving is not the cheap dock - it is burning less by running at efficient speed and planning with currents.
#Why marina fuel costs what it costs
The dock is not gouging you - mostly. Waterfront fuel infrastructure is expensive: marine-grade tanks with spill compliance, dock hardware, insurance, and delivery by truck to a location that sells a fraction of a gas station's volume. Add that many transient-heavy docks price for boaters who value convenience over cost, and the $1-2 premium over road fuel writes itself. The variation between docks comes from volume (busy fuel docks price sharper), competition (two fuel docks in one harbor discipline each other), and how recently the tank was refilled against the wholesale market.
#Finding actual prices near you
The old way is calling three marinas before a long weekend - still reliable, still tedious. Directories and apps list prices where marinas self-report, but staleness is the chronic problem: a price from six weeks ago is worse than no price. The structural fix is prices that come straight from the marina's own fuel system: marinas that manage their fuel dock on Marine OS feed their live tank prices to the fuel price map in the route planner automatically - marked with a LIVE badge - and boaters fill the gaps by reporting prices they paid, timestamped so you can judge freshness. The map gets more useful with every report.
#Five habits that cut the season's bill
- 1Know your burn curve: most planing hulls have a cruise sweet spot where 2-3 fewer knots cuts consumption 25-40%. One test day with the fuel flow gauge pays for itself all season.
- 2Fuel where you keep the boat, not where you visit: destination docks in season carry the biggest premiums.
- 3Ride the water: planning with currents (and the Gulf Stream, if you cross it) changes effective burn by double digits on longer runs.
- 4Compare the true per-gallon number: some docks discount for volume or cash; some add card surcharges.
- 5Log every fill: a season of price-per-gallon notes by dock is a personal price map nobody can sell you.
See live and reported fuel prices on the chart
Marina-fed prices with a LIVE badge, boater reports with timestamps, on the same map you plan the trip on.
#Frequently asked questions
Frequently asked questions
Price the dock, then fix the burn: the cost of keeping a boat at a marina covers the rest of the ownership bill, and the boat trip planner covers planning the run that burns the fuel.
Get the next post in your inbox
Monthly marina operations briefing. 2,400+ subscribers.