We Wish You Were Here
Big Blue Diving Khao Lak
Similan Liveaboard Experts
Similan Liveaboard
Similan Diving Day Trips
Our diving day trips will start again in November 2025. Hope to see you then.
2025 - 2026 Season - Early BIRD DISCOUNT
10% OFF ALL CABIN PRICES
Reserve you spot for the 2025 – 2026 Similan diving season now and get 10% off your cabin price.
Big Blue Diving Khao Lak
Big Blue Diving has been offering diving in Thailand for over 20 years and in Khao Lak since 2003. Khao Lak is the perfect departure point for the Similan and Surin Islands. The clear waters of the Andaman Sea typically provide great visibility and a huge diversity of marine life.
Our Similan liveaboard and Similan day trips offer diving at both the Simian and Surin Islands including the amazing Koh Bon, Koh Tachai and Richelieu Rock commonly regarded as Thailand’s best dive site.
Our Similan Liveaboard
MV Blue Dolphin
A Similan Liveaboard allows you to do the most amount of diving in the shortest possible time, without ever feeling rushed. The MV Blue Dolphin offers 14 dives on our Similan 4 day cruise. Staff are professional and experienced. We are also a CCR and side-mount friendly boat with set up space and guides available for either style of diving.
Enjoy the spacious relaxation areas around the boat plus delicious Thai and international cuisine at an unbeatable price.
- SPECIAL DISCOUNTS
- PRICE MATCH GUARANTEE
- PERFECT DIVE GROUPS
- EXCELLENT SUPPORT
Our Similan Liveaboard
Dive with Us on The Blue Dolphin
Our Similan liveaboard trips are 4 days and 4 nights. The perfect length of time to see all the best dive sites that the Similan Islands and world famous Richelieu Rock have to offer.
4 days / 4 nights from 26,800 THB
With Big Blue’s legendary service there’s no better way to see the Similan Islands and Richelieu Rock
Up-Coming Similan Liveaboard Departures
Similan Liveaboard Features
Our Day Trip Speedboat
Dive with Us on the Wave Rider
Our daily schedule allows you to dive the best the West Coast has to offer, plus we dive at the world famous Richelieu Rock four days a week. This is the fastest way to see the best of the Similan and Surin National Parks
Day Trip Diving
To The Similans and Richelieu Rock
Big Blue Diving Khao Lak now has more day trip diving options than ever!!
Tomorrow's Dive Sites
19 May 2025
Koh Bon & Tachai
Tuesday Dive Sites
20 May 2025
Surin Islands and Richelieu Rock
Need anything for your dive trip?
Big Blue Shop
Why not order now and we will have it waiting for you on your arrival on-board the MV Blue Dolphin.
The Big Blue Dive Equipment Shop
Coming to dive with us? Need anything for your trip?
Why not order now and we will have it waiting for you when you arrive in Khao Lak
Our store has some of the worlds best brands available at great prices.
When booking a trip with us, you will qualify for some even better deals too.
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Shearwater Teric
39,900฿ Select options This product has multiple variants. The options may be chosen on the product page -
Sharkskin Titanium Chill Proof Long Pants Female
8,178฿ Select options This product has multiple variants. The options may be chosen on the product page -
Sharkskin Titanium Chillproof Long Sleeve Full Zip Male
9,856฿ Select options This product has multiple variants. The options may be chosen on the product page -
Sharkskin Titanium Chill Proof Long Pants Male
8,178฿ Select options This product has multiple variants. The options may be chosen on the product page
Live and Let Dive
Big Blue Diving Khao Lak
Our Similan Liveaboard Trip Reports
Trip 33 has just returned. We started off with a wicked display of Mother Nature’s power in Thap Lamu, fork lightning and heavy rain slightly delaying departure, but stunning to watch and listen to. As most people went off to bed we made our departure out to the Similans.
Right from the word go, we could see this was going to be a great trip. The atmosphere between all you guys kind of clicked straight away and from there on we knew this trip was going to be a good one. As you all now know, we had the lovely Eve on board, as part of our “test” to see how we could incorporate the Andaman Turtle Watch Project.
Trip 31 has successfully returned back to land and what a fantastic trip it was with some old friends returning for more Andaman fun and some new friends made too 🙂 Kicking off proceedings we had a relatively smooth departure night with some delicious food and flat seas taking us out to the Similan Islands.