What to pack for a liveaboard

Check three things with the operator first: what equipment is included or available to rent, the luggage allowance on any domestic or seaplane flights to the port, and whether the boat asks for soft bags. Hard suitcases are awkward to store in small cabins, so many boats prefer soft duffels.

• Certification card, plus your Nitrox card if you plan to use Nitrox. A photo of each on your phone is a useful backup, but some boats want to see the card or look it up online.
• Logbook or an app with your dive history. Routes with experience requirements may ask to see it.
• Proof of dive accident insurance. Many liveaboards require it before boarding. Check that your policy covers the depths and region of the trip.
• Passport, visas and a medical form if the operator asks for one. If you have a condition that needs a doctor's sign-off for diving, sort it out before you travel.

• Mask, fins and dive computer. These are the items most worth owning, because fit matters and a computer that you know how to read is a safety tool.
• Surface marker buoy and reel, plus a whistle. Some routes require a buoy for every diver.
• Exposure protection suited to the water temperature on the destination page. A thin hood or vest helps by the third or fourth dive of the day, even in warm water.
• Reef hook for destinations where they are used, such as Palau or the Galápagos.
• A dive light if night dives are on the schedule.

• Spare mask strap, fin strap and O-rings.
• Batteries or a charging cable for your computer and light.
• Mask defog and a small dry bag for the tender boat.
• Plug adapters and a small power strip, since cabins often have few sockets.

• Light clothing, a rash guard, a warm layer for evenings and a windproof jacket for the tender rides.
• Reef-safe sunscreen. Palau, for example, bans sunscreens containing certain chemicals, so check the rules where you're going.
• Seasickness medication if there is any chance you'll need it. Take it before the boat leaves port rather than once you feel unwell.
• Any prescription medicine in your hand luggage, with enough for delays, plus ear drops if you're prone to ear infections.

Park and port fees, Nitrox and crew tips are often paid on board, sometimes in cash and sometimes in a specific currency. Ask the operator in advance how much and in what form. The liveaboard guide covers the costs that usually sit outside the headline price.