Mega-yacht marinas handle vessels 100 ft and longer — deep approach channels, three-phase 200 amp power, crew facilities, and dedicated security.
Hosting a 120 ft yacht requires infrastructure most marinas don't have: a turn-around basin of 200+ ft, 12+ ft of depth at MLW, three-phase shore power up to 480V, a crew lounge separate from owner facilities, and a dock layout that accepts stern-to or side-to docking.
The U.S. has a handful of true mega-yacht marinas: Island Gardens Deep Harbour (Miami), Pier Sixty-Six (Fort Lauderdale), IGY Yacht Haven Grande (St. Thomas), Newport Shipyard, and several in the Caribbean. Most operate to IGY or comparable luxury standards.
Pricing scales with length and amenities. A 120 ft yacht at a top-tier mega-yacht marina often pays $80–$200 per foot per month — but the per-foot rate buys concierge, security, crew support, and discreet hospitality at a level standard marinas can't match.
Who actually books mega yacht marinas
Mega Yacht Marinas aren't for every boater — they exist for a specific use case: marinas equipped for 100+ ft superyachts with crew, security, and turn-around basins. Whether your boat belongs here is a question of LOA, beam, draft, power amperage, and how you plan to use the slip, not the marketing language on the marina's website.
The boaters who get the most value out of this category are usually superyachts 100 – 250+ ft, charter fleets, owner-operated mega-yachts with crew. If your boat or routine doesn't match one of those profiles, a different category may save money or hassle.
How a booking actually goes
Start with the dockmaster, not the website. Send LOA including appendages, beam, draft, power requirement, arrival window, insurance limits, and whether anyone is sleeping aboard. A good dockmaster will tell you within minutes whether your boat fits the assigned slip.
Once you're cleared, expect proof of insurance, documentation or registration, payment on file, and a signed agreement before the slip is held. A verbal "we have room" is not the same as a confirmation number — get it in writing.
What the bill actually looks like
For mega yacht marinas, the published number is rarely the final number. Plan around $80 – $200 / ft / month as a starting range, then ask for an all-in written quote separating base dockage, metered electric, taxes, pump-out, parking, deposits, and any liveaboard or resort fees. The same 40-foot boat can land $300–$800 apart at two marinas with the same per-foot rate, depending on how each one bills LOA, beam, and power.
Amenities, and which ones actually matter
On paper, mega yacht marinas typically include 12+ ft depth, 200 amp three-phase 480v power, crew lounges and laundry, 24/7 security, concierge and provisioning. In practice, two or three of those will make or break your experience: fuel availability if you cruise, pump-out access if you live aboard, 50A power if you run air conditioning, and reliable Wi-Fi if you work from the boat. Confirm the specific amenities you'll use weekly — the rest is mostly nice-to-have.
Pros and cons
Pros
- • Matches a clear way of using a boat, so the slip search gets shorter
- • Easier to compare apples-to-apples against similar marinas nearby
- • Amenities, rules, and dockmaster expectations are predictable
- • Pricing patterns are well understood, so quotes are easier to vet
Cons
- • Availability can be tight in season or in popular harbors
- • Headline rates often leave out power, tax, and resort fees
- • House rules vary widely from one operator to the next
- • The best slips often require deposits or sitting on a waitlist
How to avoid the obvious mistakes
The single most expensive mistake in this category is choosing by label. Two marinas can both call themselves "mega yacht marinas" and operate on entirely different rules, fees, and storm plans. The agreement is what matters; the marketing is not.
Before signing, get in writing: assigned slip size, how LOA is measured, the all-in monthly total, the cancellation window, the storm plan, the liveaboard or guest rules, and the contractor-access policy. If any of those are vague, slow down — the next dockmaster down the coast might be more straightforward.
Best for
- • Superyachts 100 – 250+ ft
- • Charter fleets
- • Owner-operated mega-yachts with crew

