It's 9:00 AM and the Uber is pulling into Kewalo Basin. You've got a tote bag in one hand and the question that hits everyone on charter morning: did I bring too much, or did I forget something? The crew is waving from the dock. The boat is gleaming. The Pacific is the exact blue you saw in the brochure. Now is not the time to realize you packed the wrong sunscreen.
Packing for a private catamaran day in Oahu is its own thing. It's not a hotel pool day. It's not a hike. It's not a regular beach day. You'll spend three to six hours on a vessel where the sun is more intense than anywhere on land, the breeze is stronger, fresh water is limited, and Hawaii's reef-safe sunscreen law is taken seriously. Pack right and the day is effortless. Pack wrong and you're rationing water with sunburn on your shoulders by hour two.
This guide covers exactly what to bring — and just as important, what to leave at the hotel because the boat already has it.
Hawaii's Act 104 bans sunscreens containing oxybenzone and octinoxate statewide (Hawaii.com) — and Oahu's most popular snorkeling spot receives an estimated 412 pounds of sunscreen on its reef daily. What you put on your skin matters here more than almost anywhere else in the world.
What the Boat Already Has (So You Don't Need to Pack It)
Start with the good news. Most private catamaran charters in Honolulu include the essentials, so you can skip them from your bag entirely. A standard private catamaran day typically provides:
- Bottled water and basic soft drinks — Refilled throughout the charter; don't haul a case of water from CVS
- Ice and a stocked cooler — Plenty of room for anything you bring
- Towels — For drying off after swimming; you don't need to bring beach towels
- Snorkel gear — Masks, snorkels, fins in standard sizes; rinse-water for masks
- Basic music system — Bluetooth-connected; bring your phone with a playlist
- Cups, glasses, plates, utensils — For any food or beverages you bring
- Sun shade — A bimini or covered deck space for guests who need to cool down
- A small first-aid kit and motion sickness wristbands — Just in case
What's not usually included: alcohol, food, professional photo gear, your own snorkel gear if you prefer a custom fit, and any personal-care items. That's what your bag is for.
The Core Packing List — What Every Guest Should Bring
This is the essential list. If you bring nothing else, bring these. Most guests fit everything below into a single tote bag or small backpack.
The Reef-Safe Sunscreen Question (It's Stricter Than You Think)
Hawaii has the strictest sunscreen rules in the world, and they apply across the entire state — not just at protected beaches. The 2021 Act 104 law bans the sale and distribution of sunscreens containing oxybenzone and octinoxate, with Maui County going further to ban all non-mineral sunscreens entirely.
What this means for your charter day: bring a mineral-based sunscreen made with zinc oxide or titanium dioxide as the active ingredient. Look for "non-nano" on the label — nano-sized mineral particles can still harm coral. Brands that consistently pass the test include Sun Bum Mineral, Thinksport, Blue Lizard, All Good, Stream2Sea, Kokua Sun Care (made in Hawaii), and Raw Elements.
If you're not sure what you packed, two options: leave it at the hotel and buy a compliant brand at any ABC Store, Whole Foods, Target, or Walmart in Honolulu before your charter day. Or — many private charters keep a backup bottle of reef-safe sunscreen onboard. Just ask when you book.
What to Wear (And What Not To)
Catamarans are casual but the photos last forever. The sweet spot is "vacation-elevated" — comfortable enough to be on a boat, photogenic enough that you'd post the pictures.
What Works
- Sundresses, linen shorts, lightweight pants — Comfortable, photogenic, dry quickly
- Bright colors and Hawaiian florals — Pop against the blue water in photos
- Layered swimwear under outer layer — Lets you swim without changing
- Rash guard or UPF shirt over swimsuit — Sun protection + style for snorkeling
What Doesn't Work
- Stilettos or hard-sole shoes — All catamarans are barefoot vessels
- White pants/shorts if anyone's drinking red wine — Predictable
- Heavy jewelry over the water — One slip overboard, gone forever
- Strong perfume or cologne — Doesn't mix with sun, salt, and others in close quarters
- Brand-new clothes you haven't worn — Test for chafing on land, not at sea
Food & Beverage — What to Bring
Most private catamaran charters allow BYOB and your own food (always confirm with your operator). The freedom is the whole point of private — your group decides what's on board.
For a 3-hour charter, a typical group of 6-10 packs roughly:
- 2-3 bottles of champagne or rosé — For toasts and golden hour
- One six-pack of beer — Kona Big Wave, Maui Brewing, Heineken — your call
- Mixers and limes — If anyone's doing cocktails
- Light snacks — Cheese board, charcuterie, fresh fruit, chips and salsa
- Pre-cut items only — No raw chicken to cook, no whole watermelons to butcher
- Reusable cups — If you brought wine bottles, you'll need them
If you want this handled for you, many operators have catering partners who deliver everything pre-packed to the dock. For full-day charters, this is worth the cost — you skip the grocery run and the cooler logistics entirely. For more on what makes private charters feel different, our piece on what you're actually getting on a private charter gets into the experience side.
If Kids Are Coming
Pack a small "kid kit" separate from the adult bag. Include: a change of clothes per child (boat splashes happen), a small toy or sticker book for the 15-minute boarding window, snacks they actually eat (not new ones to test), child-specific reef-safe sunscreen (different formulation, gentler), a hat with chin strap (most kid hats blow off in two minutes without one), and pediatric Dramamine if there's any history of car sickness.
Our complete guide to taking kids on a private catamaran in Honolulu goes deeper on age-by-age recommendations, snorkel-vs-no-snorkel calls, and what keeps a 4-year-old entertained for three hours on the water.
If Your Dog Is Coming
Yes, private catamarans in Oahu are dog-friendly when you book the whole boat (most group tours are not). Your dog's pack list is short but specific: a dog-specific life jacket with handle, fresh water (1 liter per 20 lbs of dog, plus extra), collapsible bowl, pet-safe sunscreen for nose and ear tips, a non-slip mat for traction on the deck, a 6-foot leash with carabiner, and a familiar toy or blanket as a scent anchor.
Our dog-friendly catamaran guide covers everything from reading your dog's comfort signals at the dock to seasickness prevention.
What to Leave at the Hotel (Genuinely Don't Bring)
The packing mistake guests make most often is overpacking. The boat is a finite space, the deck is wet, and salt destroys things you actually care about. Leave behind:
- Expensive leather bags or purses — Salt spray ruins leather fast
- Heirloom jewelry, watches, anything irreplaceable — One drop overboard, gone
- Hardcover books or paper notebooks — Get wet, never the same
- Full-size makeup kits — Sweat and ocean air undo most makeup by hour one
- Disposable plastic water bottles — The boat has water; the ocean doesn't need more plastic
- A second pair of shoes — You're barefoot the entire time
- Tablets or laptops — Salt air kills electronics quietly over weeks
- Anything labeled "dry clean only" — Self-explanatory
Photography & Tech
The photos from a catamaran day are the ones you'll want printed. A few tech notes:
- Your phone is enough for 90% of shots — Modern iPhone/Android cameras handle the lighting beautifully
- Bring a power bank — A 10,000mAh portable charger covers a full day for two phones
- Waterproof pouch with lanyard — $8-15 on Amazon, looped around your neck or wrist
- GoPro or action cam (optional) — Best for snorkeling shots; lens cloth helps with water spots
- Polarizing filter (if using a real camera) — Cuts glare, deepens the blue of the water
- Light backup card and charged battery — Salt air can fry one battery; bring two
Best photo times on the boat: the first 30 minutes after departure (everyone is fresh and lit by morning sun), the golden hour 90 minutes before sunset, and the moment the bow meets the open Pacific past the breakwater.
Motion Sickness — Pack Smart
Catamarans are dramatically more stable than monohull boats because of their twin-hull design. Most guests, even those prone to motion sickness, handle a catamaran charter without issue. That said, a small kit helps:
- Dramamine or Bonine — Take the night before, not the morning of (drowsiness kicks in less)
- Ginger candy or chews — Effective and gentler than medication
- Sea-Band acupressure wristbands — Drug-free, surprisingly effective for mild cases
- Light snacks — An empty stomach is worse than a fed one
- Cold water — Sipping helps
If you're worried, eat a light meal 90 minutes before boarding — toast, banana, plain crackers. Avoid greasy food, citrus juice, or heavy coffee on charter morning.
The Final 5-Minute Packing Checklist
If you only have five minutes to throw a bag together before the Uber arrives, grab these ten items in this order:
- Reef-safe mineral sunscreen
- Polarized sunglasses with strap
- Wide-brim hat with chin strap
- Swimsuit worn under your clothes
- Rash guard or light long-sleeve UPF shirt
- Flat sandals (no heels)
- Light sweater for sunset breeze
- Phone + waterproof pouch + power bank
- Refillable water bottle
- Cash for crew tips (15-20% of charter cost is standard)
Everything else is bonus. The crew will handle the rest.
Ready for Your Catamaran Day
Packing for a private catamaran day in Oahu isn't complicated — it's just specific. Bring less than you think you need, prioritize sun protection over outfit changes, and trust that the boat has the basics covered. The best charter days are the ones where you barely think about your bag once you're on the water.
If you're still in the planning stages and figuring out the right charter type for your group, our complete guide to booking a yacht in Oahu covers timing, vessel selection, and what to expect by season. And if you want to know what a charter day actually looks like from start to finish, what actually happens when you book a private catamaran in Honolulu walks through every step.
Ready to set sail?
Pack the basics. We'll handle everything else. Let's plan a day on the water that feels effortless from the moment you board.
📞 808-807-4800 · Island Jewel Yacht Charters
Related reading:
Yacht Charter Etiquette: A Guide for First-Time Guests ·
What Actually Happens When You Book a Private Catamaran ·
Best Time to Book a Yacht in Oahu