Similans FAQ

Welcome to the frequently asked questions from Thailand Liveaboards, divingsimilans.eu, your personal adviser for diving Similans Thailand. We have tried to answer the most asked questions here. Is your question not included? Send us an email.

Many of the divesites at the Similans are known under different names, sometimes also under Thai names. On this website we have chosen the most frequently used names for the divesites, but it is very well possible that you will see somewhere one of the here mentioned divesites under a different name. The divesites at Koh Bon, Koh Tachai and Richelieu Rock are nearly everywhere known under the here mentioned names.

The 4 days/4 nights trips all go to Similans, Koh Bon, Koh Tachai and Richelieu Rock, the longer trips sometimes also to the Surin Islands. The exact divesites are decided on the boats, depending on preferences of the divers on board, the weather, location of other boats and divesites where recently beautiful or special marine life was spotted.

On the webpage Similans & Surin you will find a description of the divesites, including for example currents and depths. The here mentioned depth is the maximum diving depth on the divesite. At the Similans it is easily possible, both on a diving daytrip, overnight trip and liveaboard diving cruise, to make lovely dives without diving too deep.

On most divesites at the Similans, and surely at Koh Bon, Koh Tachai and Richelieu Rock, you will have to take a current into account, which can be strong. We try to use the currents as much as possible to our advantage and avoid swimming against the current. On many of the divesites there are natural protection points against the current.

The trips to Similans only are shorter and offer very nice diving. But the trips to Similans, Koh Bon, Koh Tachai and Richelieu Rock offer the best diving Thailand has on offer. Because of currents and depths the diving at Koh Bon, Koh Tachai and Richelieu Rock can be challenging.

The trips to Similan Islands only, possibly in combination with Koh Bon, are the for snorkelers best suited trips. The snorkeling is excellent, the trips are not too extensive and it is possible to visit the beaches.

On our page overnight diving trips you will find more information on these trips.

The daytrips and overnight trips to Similans and/or Koh Bon depart early morning around 06.00 hours (6 AM) from Phuket, or 07.30 hours (7.30 AM) from Khao Lak. First a minibus transfer to Tap Lamu, and from there the crossing via (speed)boat to the Similans. After the diving the boat arrives back in Tap Lamu around 17.00 hours (5 PM), followed by the transfer back to Khao Lak or Phuket.

The liveaboard diving safaris to Similans, Koh Bon, Koh Tachai and Richelieu Rock depart in the beginning of the evening from either Phuket or Tap Lamu. The transfers fron the hotel or divecenter are, depending on location of hotel and departure point of the boat during or at the end of the afternoon. Once on board there is a meal for everybody, after which the crossing will be made. Departure from the Similans is around noon, so everybody can be returned to their hotel around 18.00 hours (6 PM).

The National Park Fees are 200 Baht entrance and 200 Baht per diving day. This means that a daytrip to the Similans or Koh Bon will be 400 Baht in National Park fees, a 2 days/1 night overnight trip to Similans and/or Koh Bon 600 Baht. A 4 days/4 nights liveaboard diving cruise to Similans, Koh Bon, Koh Tachai and Richelieu Rock costs 400 Baht entrance fees for both national parks (1x Similans and 1x Surin) and 800 Baht for the diving days, so 1,200 Baht in total.
Snorkelers and non-divers only pay the entrance fees.

These National Park Fees are not included in the prices on our websites, unless indicated otherwise.

The prices as mentioned on our boatpages are not all inclusive. If you don't know what you are paying for, ask us, so you can be sure there will be no unexpected expenses. Take into account that some of the prices can fluctuate because of the development of exchange rates between the Euro, US$ and Thai Baht. The price we give you is the price you will have to pay, even if the prices change afterwards.

Included are: accommodation on board, hotel transfers, all meals, snacks and fruit, drinking water, tea, coffee, weights, weight belts, tanks, air fillings, torches for the nightdives, diving in small groups with diveguide. Towels are provided on most boats, but not always.

All diving boats have 12 liter aluminium tanks on board with a yoke connection (international valve, so no DIN-valve). If you have a DIN regulator, you can bring your own adapter, or buy or rent one here.
On request we can on most of the liveaboard boats also arrange bigger tanks (15 liter) or smaller (10 liter).
Nitrox is available on a growing number of the boats.

The water temperature at the Similans, Koh Bon, Koh Tachai and Richelieu Rock is year round around 29 degrees centigrade (84 Fahrenheit). So the water is not cold, but there can be an occasional thermocline with a drop in temperature to around 26 (79) degrees.
Most divers dive here with a shorty 3 mm wetsuit. But with mulitple days of mulitple dives, as is always the case on a liveaboard diving cruise, the water can feel chilly. That is why we advise divers who bring their own wetsuit to bring a 3 mm full suit. That is just a bit warmer and adds protection as well. That is why besides shorties we also have 3 mm full suits for rent. For most divers that is thick enough, it is always possible to add a shorty if you are getting cold. Divers who chill easily we advise to bring a 5 mm suit.

Most of the guides dive here with a 5 mm suit, sometimes with a 7 mm. But some of them dive with a shorty.

On a liveaboard boat (diving cruise) you will not need much luggage. Also the cabins will be smaller than the standard hotel room is.
During your liveaboard or overnight diving trip we can take care of your luggage, suitcases and backpacks and valuables you don't want to take with you. When before or after a liveaboard cruise or diving daytrip you want to go trekking elsewhere and return to Phuket later we can also look after your divegear.

Just take the normal precautions, like on any other diving trip. Malaria prophylaxes are not necessary. Phuket has two excellent international hospitals and three recompression chambers in the unlikely event you will need medical care.

Of course, if you want to go diving during your Thailand vacation, check to make sure your travel and/or health insurance covers scuba diving. With a lot of insurance policies that is the case these days.
We also advise everybody to get a cancellation insurance.

We will take care that the boat you'll be on meets certain minimum requirements, like the presence of oxygen, a medic first aid kit and an emergency assistance plan.

Here you will find our official booking and cancellation consitions.

The conditions in short: a downpayment of 30% of the price is required. The remainder you can pay here on the spot, for a liveaboard diving cruise the remainder must be in our posession 45 days before departure. We have a bank account in the Netherlands, to enable all payments from within the Eurozone easy, safe and free of charge. People paying from ouside of the Eurzone can pay via Paypal or to our bank account in the Netherlands or Thailand.
Daytrips and courses can be cancelled up to 18.00 hours (6 PM) the day before the trip or course. For a liveaboard we use a different cancellation policy, with a refund depending on the moment of cancellation.

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Thailand scuba diving - Similan Islands - Koh Bon - Koh Tachai - Richelieu Rock - Surin Islands