A liveaboard gives you one job: dive, eat, sleep, repeat. What it doesn't give you is a shop. Once the boat has pulled away from the jetty, the nearest dive centre is somewhere behind you, and the spare mask strap you left in a drawer at home turns into a genuine problem. Cabins are compact, drying space is shared, and baggage limits apply on the domestic flights that often get you to the boat in the first place. So this list is built around that reality: what earns its place, what stays behind, and the handful of items that quietly rescue a trip when something fails at 25 metres.
Start with the kit you actually dive in
Your regulator, BCD, computer and exposure suit decide whether you enjoy the week, so treat them properly before you fly. Get the regulator and BCD serviced, check the wetsuit for perished seams, and replace any strap that has been looking tired since last season. Then think about how much diving you're really doing. Four or five dives a day in warm water still chills you by Thursday if your only suit is a 3mm shorty.
- Mask, plus a spare strap and, if space allows, a spare mask
- Fins with buckles checked, and thin-soled booties that work in a dinghy and on a rocky shore
- Wetsuit appropriate to the number of daily dives, plus a hood or beanie for repeat diving
- Dive computer with a fresh battery, and no-deco tables or a slate as backup
- Torch with spare batteries, cutting tool, whistle, DSMB and spool
- Reef hook or gloves only where local rules permit — check before you pack, not after
Most boats supply tanks, weights and belts, but confirm what's included before you decide what to carry. Keep your regulator, computer and torch in a padded bag as hand luggage; if the hold bag goes missing, you can still dive with borrowed kit.
The spares bag that rescues trips
This is the section worth reading twice. A small dry bag of spares weighs under a kilo and covers almost every failure that ends a dive early. Crews are helpful and inventive, but they can't magic a fin buckle out of a locker at 6am.
- Mask strap and fin straps or buckles
- Spare mouthpiece, plus cable ties to hold it if a tie-wrap gives up
- O-rings, a HP spool, silicone grease and an O-ring pick
- Neoprene glue for a torn seal or split bootie
- Multi-tool, duct tape wrapped around a pen, and a few cable ties
- Spare torch batteries and a computer battery in the correct size
- A short length of bungee cord, which fixes more things than you'd expect
Clothing: pack less than you think
Liveaboard life has three outfits: diving kit, something dry for between dives, and something marginally smarter for dinner. That's it. Cotton is a poor choice for the boat because it stays damp for hours, so lean on quick-drying fabrics and one thin fleece for breezy night crossings.
Two swimsuits, one long-sleeve rash guard, a pair of shorts, a light shirt, a sarong, sandals with grip and a hat with a chin strap will carry you through a week. Add one set of clean clothes for the flight home. If laundry is available it's usually limited, so hand-wash in the cabin sink and dry on the line rather than packing double.
Toiletries, sun protection and reef-safe choices
Reef-safe sunscreen is about ingredients, not marketing. Mineral filters such as zinc oxide and titanium dioxide are the safer bet; common chemical filters including oxybenzone and octinoxate are the ones most destinations have moved against. Check the label rather than the front of the bottle, and remember that some marine parks ban certain filters outright, so look up the rules for your destination before you travel.
The cheapest sun protection is fabric. A long-sleeve rash guard and leggings mean you apply far less cream, which is better for the reef and better for your wetsuit. Don't apply sunscreen to your forehead just before donning a mask — that's a guaranteed fogging session and a slipping strap.
- Reef-safe sunscreen and a lip balm with SPF
- After-dive ear rinse, but no cotton buds
- Basic first aid: plasters, blister plasters, antiseptic, painkillers, rehydration sachets
- Antihistamine and any personal medication in original packaging with a copy of the prescription
- Travel-sized toiletries only — big bottles waste cabin space and leak in the hold
If you suffer from seasickness or take regular medication, speak to a pharmacist or your GP before you travel. Some remedies aren't suitable alongside diving, and some conditions need a proper conversation rather than a guess at the airport.
Documents, charging and the boring essentials
Certification cards, logbook, nitrox card, dive accident insurance details, passport, visas and a printed itinerary left with someone at home. Keep digital copies in your phone and paper copies in a dry bag, because signal at sea is a luxury, not a plan. Check that your insurance actually covers the diving you're doing, including depth and any speciality work.
For electronics, bring a universal adaptor, a power bank, spare camera batteries, memory cards, silica gel sachets for housings, and a small headlamp with a red setting for night entries. Two dry bags — one small for the dinghy, one large for wet kit — and a mesh bag for rinsing gear will earn their space every single day.
What to leave at home
Hard-shell suitcases are awkward in a narrow cabin and usually end up stored ashore anyway, so a soft duffel is the better call. Leave the second wetsuit, the bulky towel collection, the hair dryer that will trip the boat's electrics, and the "just in case" wardrobe you never open.
Also leave behind anything the local authorities restrict. Rules on dive knives, reef hooks and gloves vary widely between countries, and a friendly chat with the dive centre before you fly beats a difficult conversation at customs. Drones and large camera rigs need permission in some marine parks too.
The night-before routine
Lay everything out on the floor, then take five things away. Pack the regulator bag as carry-on, charge every battery, and weigh the main bag against your flight allowance. Photograph the contents of both bags so a lost-luggage claim is straightforward.
On board, rinse your gear after every dive and dry it in shade rather than full sun — UV is brutal on neoprene and straps. Label masks, fins and torches with your name; identical black kit goes missing constantly. And once you're back on the jetty, note what you never used. That list is your packing list for the next trip, and it will be shorter every time.
Photo: Pexels / Pixabay
