Dive trip packing: what to bring, what to rent

The non-negotiable essentials

Some items are mandatory. You must bring your mask, dive computer, and physical certification card. I lost my digital PADI card in a phone mishap in 2017 while traveling through Cebu. It took three days to verify my credentials with the local shop.

Always carry a hard copy of your logbook. A dive computer is too personal to rent. It tracks your specific nitrogen loading and ascent rates which prevents accidents. You should also pack a high-visibility Surface Marker Buoy (SMB).

Don’t forget your SMB. Many boats in Komodo operate in heavy currents where visibility of the diver is critical for safety. If you rely on a rental SMB, it might be too small or poorly weighted for your buoyancy needs.

Gear you should rent

A BCD is heavy. Most divers choose to rent a BCD to save space in their luggage. It is a bulky piece of equipment that takes up 40% of a standard dive bag.

Rent your wetsuit too. Wetsuit sizes vary wildly between brands like Scubapro or Mares. If you travel to Anilao in 2024, you might find the water is warmer than expected. A rental 3mm suit is often more convenient than hauling a thick 5mm suit across three islands.

Check the rental quality. Some budget shops use old, salt-crusted BCDs that leak air slowly. You should inspect every valve before you leave the boat for your first dive of the day.

The regulator debate

This is a personal choice. Bringing your own regulator ensures you know exactly how it breathes under pressure. I once used a rental in Tubbataha that had a sticky first stage. It made maintaining neutral buoyancy at 18 m very difficult during my descent.

Regulators are expensive. A high-quality set costs between $400 and $900 USD. If you only dive twice a year, renting is more economical. However, if you dive 50 times annually, the investment pays for itself quickly.

Transporting regulators requires care. You must rinse them thoroughly with fresh water before packing. Salt crystals can cause oxidation on the metal parts while you are in transit to your destination.

Battery and electronics rules

Lithium-ion batteries are strict. Airlines require all spare batteries to be in your carry-on luggage. This rule exists because lithium fires are difficult to manage in a cargo hold.

Check your dive light specs. Many high-lumen lights use large capacity cells that exceed airline limits. Read the IATA guidelines before you head to the airport for your flight.

Pack your charger separately. Cables often tangle in dark bags. Keep your electronics in a small, organized pouch so you can find them quickly at night.

Medical and safety kits

You need a DAN medication kit. Divers should carry specific items like motion sickness tablets and antiseptic creams. I always pack extra ear drops because tropical ear infections happen frequently in humid environments.

First aid is vital. A small, waterproof kit belongs in your dive bag. It should include bandages, alcohol wipes, and perhaps some antihistamines for unexpected stings.

Check your expiration dates. Old medication is useless in an emergency. Review your kit every six months to ensure everything is still effective.

Weight and logistics optimization

Weight limits are punishing. Most airlines allow 23 kg for checked bags. A full set of heavy steel tanks would be impossible, but even a heavy BCD can push you over the limit.

Use dry bags effectively. They protect your clothes from damp gear. I prefer using two medium dry bags instead of one massive one because they fit better in hotel corners.

Plan your weight distribution. Put heavy items like fins at the bottom of your suitcase. This prevents the bag from toppling over during transit or while you are walking to the boat.

Organizing your dive bag

Group similar items together. Keep all your small accessories, like masks and snorkels, in one dedicated pouch. This prevents you from digging through your entire bag for a single spare fin strap.

Label your gear. Many divers have identical black fins or masks. Use a small piece of colored tape to identify your equipment so it does not get mixed up on the dive boat.

Keep a checklist handy. Write down your gear list on a piece of paper before you pack. This simple step prevents the frustration of realizing you forgot your computer once you arrive at the resort.

Managing the aftermath

Rinsing is not optional. Always use fresh water after every single dive session. Saltwater ruins zippers and corrodes metal components over time if left uncleaned.

Dry gear properly. Never pack a wet wetsuit into a closed bag. This creates mold and smells that are nearly impossible to remove without professional cleaning services.

Clean your computer too. Wipe the sensor with a damp cloth. Salt buildup can interfere with how the device reads your depth or ambient light.

Final preparations

Confirm your rental sizes. Email the dive center in Cebu a week before you arrive. Ask them if they have your size in a 5mm wetsuit to avoid surprises upon arrival.

Check your insurance. Ensure your DAN or similar coverage is active for your specific dates. Most policies require you to notify them if you are diving in high-risk areas like remote reefs.

Pack your dive log. It is your proof of experience. If you want to do deep dives at 30 m, the instructor will need to see your recent history.

If you are a beginner, rent everything first. Once you have completed 30 logged dives, consider buying your own mask and computer.

Frequently asked questions

Should I bring my own regulator?

Yes. Bringing your own regulator ensures you know its service history and performance. While rentals at places like Koh Tao cost around $5-$10 USD per day, a personal regulator provides peace of mind.

Can I pack my dive computer in checked luggage?

It is safer to keep your dive computer in your carry-on bag. If your luggage is lost, you still have your certification records and depth data.