Renting a Boat for a Party or Celebration: The 12-Passenger Rule and How to Plan Around It
By BoatRental.com · Published August 28, 2026 · Updated August 28, 2026
Most charter boats legally carry a maximum of 12 passengers — a US Coast Guard rule for uninspected vessels, regardless of boat size. Groups of 13 or more need a vessel with a Certificate of Inspection: party catamarans and event yachts, which typically run $2,500 to $12,000 per day in 2026.
The 12-passenger rule, before you invite anyone
The single most important fact for party planning afloat: a US-flagged vessel without a Coast Guard Certificate of Inspection (COI) may carry at most 12 passengers, no matter how large the boat. A 62-foot yacht and a 24-foot pontoon share the same ceiling. Operators offering “14 guests, no problem” on an uninspected boat are offering you their violation.
Above 12, you need a COI vessel — inspected, crewed to a manning requirement, and listed as such. On BoatRental.com the guest capacity on every listing is the legal one: when a boat says 49, it is certified for 49.
What party-capable boats cost
Real examples from the live fleet, August 2026: a 50-foot certified party boat carrying up to 49 guests lists at $5,199 per day in the Hamptons; a 122-foot event yacht hosting 85 lists at $11,769; a 63-foot certified catamaran in Palm Beach takes 40 guests at $2,750. Below the 12-guest line, party-styled pontoons and deck boats run a few hundred dollars per hour.
Per head, the big numbers soften fast: that 49-guest boat at capacity is about $106 per person for the day before extras — competitive with any venue that does not float.
Planning the day so it works
- Count honestly, including yourself — 13 aboard an uninspected boat can end the trip at the dock.
- Music: confirm the sound system and any local noise rules at anchorages; some raft-ups have enforcement.
- Alcohol: fine for guests on virtually all charters; glass usually is not. The operator’s policy is on the listing — read it.
- Catering: crewed boats often allow or arrange provisioning; small boats mean coolers you carry.
- Timing: sunset slots book first. For a party, a 2pm–8pm run beats a 10am start every time.
- Budget the extras: fuel, and 15-20% crew gratuity on crewed vessels, on top of the rate.
Bachelorette, birthday, corporate: which boat
Groups of 8-12 have the full market: a big pontoon or deck boat for the sandbar scene, or a crewed yacht if the point is being hosted. Groups of 13-40 are catamaran and party-boat territory — certified, crewed, and built for exactly this. Above 40, you are into genuine event yachts with multiple crew; treat it like booking a venue, because it is one.
Frequently asked questions
How many people can you have on a rented boat?
Twelve passengers on any uninspected vessel — a federal ceiling regardless of boat size. More requires a Certificate of Inspection vessel; certified party boats and event yachts on BoatRental.com list their real certified capacity, up to 85 guests.
How much does a party boat cost?
Certified examples from the live fleet, August 2026: 40 guests from $2,750/day (63 ft catamaran, Palm Beach), 49 guests at $5,199/day (50 ft, Hamptons), 85 guests at $11,769/day (122 ft event yacht). Sub-12-guest party pontoons run a few hundred dollars per hour.
Can you drink alcohol on a charter boat?
Guests generally can, subject to the operator’s policy — the operator or captain, not the law, sets most house rules. Glass is commonly banned, and an intoxicated group can lawfully be brought back early. The person operating a self-drive boat is subject to BUI law, full stop.
Do you tip the crew on a party charter?
Yes — 15-20% of the charter rate is customary for the crew on any crewed vessel, party or not. On big-group boats it is often the largest cost people forget to budget.