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+66 810 142 748 info@thejunk.com

SIMILAN & SURIN ISLANDS

Thailand

4 & 6 Night diving liveaboards

Available October – May

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Open Water+
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10+ Logged dives
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Free Transfers
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Nitrox available

Embark on AN EPIC DIVE ADVENTURE through the world-famous Similan and Surin Islands. Hunt for big pelagics around Koh Bon and Koh Tachai, then lose yourself in the kaleidoscopic wonderland of RICHELIEU ROCK – Thailand’s crown jewel of diving.

Similan Liveaboard - Clownfish

Why dive The Similan Islands?

The Similan Islands (Mu Ko Similan National Park) lie off the coast of Phang Nga Province in the Andaman Sea, Thailand.

Here’s what makes them special for scuba divers:

Exceptional underwater scenery: huge granite boulders, dramatic rock formations, walls, pinnacles and clear water visibility.

Rich marine life: everything from hard and soft corals to big pelagics. For example, manta rays and whale sharks sometimes come over to visit.

In short: if you are looking for a dive destination that offers both beauty and marine diversity, the Similans are hard to beat.

WHAT DO OUR GUESTS SAY?

★★★★★

“Just an outstanding time. I can’t say enough about deckcrew, divemaster, chefs, Captain and staff. Friendly, efficient and professional.”

– Michael R, October 2024

★★★★★

“The ship is stunning and unique, but that’s only a bonus. If you’re looking for a liveaboard in the Similan islands, this is the one. Unmatched value for money.”

– Tomer G, February 2025

★★★★★

“The diving was incredible, Richelieu rock was worth the hype. Absolutely unreal, like diving in an aquarium. The sheer number of fish was crazy, felt like a dream.”

– LoveVaca, February 2025

Choose from 2

EPIC itinerary Versions

Click on either of the 2 trip lengths, to view the full specific trip details.

Similan and Surin Islands Liveaboard Itinerary

October – May

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Highlights: Dive sites & marine life

Here are some of the standout features:

Sites like Richelieu Rock are world-famous for their sheer amount of life, and vibrancy.

Massive granite boulders underwater create unique swim-throughs and cavern-like topography.

Marine life includes turtles, reef sharks, large schools of fish, and vibrant macro species.

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Best time to dive

The main dive season is mid-October to mid-May. Outside of this window the park is closed to divers and tourists because of weather / monsoon.

If you’re looking for increased chances of seeing manta rays or whale sharks, aim for December to April.

Water temperature stays comfortable (~28-30 °C) and visibility is excellent in season.

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Logistics: Getting there & planning your trip

Departures typically start from Khao Lak (Thap Lamu Pier), or on occasion Chalong Pier. Please do check your booking to confirm.

You can fly into Phuket airport, where we recommend staying for a night to relax and get yourself ready. We then have a shared transfer service that will pick you up from your hotel in Phuket (or Khao Lak) and take you to the vessel.

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Dive conditions & level of difficulty

Diving the Similan Islands is suitable for divers of all levels. There are easier sites as well as some with more challenging currents.

To join our Similan & Surin liveaboard cruises you must be a minimum of Open Water certified with 10 logged dives.

Visibility can be excellent (even up to ~50m at times)

aboard TWO ICONIC WOODEN VESSELS

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The Junk

Famous & full of charm

Accommodation on board Thailand’s most historic diving liveaboard.


The Junk comfortably welcomes 18 divers on board. Choose between 2 Twin/Double cabins with convertible beds, 2 three-berth cabins (bookable as Twin/Doubles if needed), and 2 four-berth cabins.

All cabins are fully air-conditioned and have their own en-suite with hot shower.

FACILITIES

Some of the most important features on the Junk

THE BOAT

Aircon/Fan Salon

42″ Flatscreen TV

Library of movies, books & games

Covered outdoor & indoor dining

All meals served buffet style

Self-service drinks & snacks*

Sundeck with beds

2 support RIBs

THE CABINS

6 aircon cabins

Individual aircon control

Ensuite bathroom with hot water

Overhead reading lights

Bath towels

THE DIVING

Shaded dive deck

Personal set-up area & storage crate

12L Alu-Tanks, weights & belt

15L Alu-tanks available*

Aqualung rental equipment*

SMB (Safety Sausages)**

Personal Diving/Deck Towel

Nitrox available*

Diving courses

THE EXTRAS

Yacht boutique (Equipment/Merchandise)

Kayak usage

Island visits

Service with a smile

(*Charges apply)

(**Free of charge for duration of trip)

The Junk

Tradition, comfort & flexibility

Accommodation on board Thailand and Myanmar’s most iconic diving liveaboard.


The Junk proudly presents her sister boat: The Phinisi, officially known as ‘Cheng I Sao’. The Phinisi (pronounced: Pinisi) operates liveaboard cruises in Thailand and Myanmar.

While a remarkable history and character unites the two yachts, The Phinisi complements The Junk by offering a variety of itineraries in Thailand, plus another exciting destination: the Mergui Archipelago in Myanmar!

FACILITIES

Some of the most important features on the Phinisi

THE BOAT

 Fan Saloon

 42″ Flatscreen TV

 Library of movies, books & games

 Covered outdoor & indoor dining

 All meals served buffet style

 Self service drinks & snacks*

 Sundeck with beds

 2 support RIBs

THE CABINS

 7 aircon cabins

 Individual aircon control

 Ensuite bathroom with hot water

 Overhead reading lights

 Bath towels

 Cupboards for personal items

THE DIVING

 Shaded dive deck

 Personal set-up area & storage crate

 12L Alu-tanks, weights & belt

15L Alu-tanks available*

 Aqualung rental equipment*

 SMB (Safety sausages)**

 Personal diving/deck towel

 Nitrox and Dive courses available*

THE EXTRAS

The Phinisi boutique (Equipment/Merchandise)

Island visits

Service with a smile

(*Charges apply)

(**Free of charge for duration of trip)

Gallery & Dive Sites

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SIMILAN ISLANDS

SIMILAN ISLANDS

The above water scenery will provide stunningly beautiful white sandy beaches with small forested areas. Dive some of the following sites; Boulder City, Sharkfin Reef, Anita’s Reef, and Three Trees.

Under the surface, you may see Leopard (zebra) shark, blue spotted stingrays, clown triggerfish, rabbit fish, scorpion fish, snappers, emperor fish, giant trevally and angelfish. The coral gardens, bommies, and boulder formations are wonderful to dive.

Elephant Head Rock, visible from the surface, is the biggest pinnacle in the Similans and has some fantastic swim-throughs. Whitetip reef sharks, batfish, trevally and barracuda can often be seen on the perimeter of the boulders. If you look closely in the cracks and in the rubble you can see smashing mantis shrimp, porcelain crab, moray eels and cleaner shrimp.

There are also sites dominated by huge granite boulders such as Deep Six, Christmas Point, and North Point where you can see white tip reef sharks, schooling giant trevally, and schools of neon fusiliers.

KOH BON

This is generally the most likely place to see manta rays on our Similans itinerary. You are also likely to see Napoleon wrasse, sweetlips, octopus, bluefin trevally, giant moray eels, great barracudas, fire dart goby, spiny lobster, and nudibranchs of many types. The dive sites vary from wall diving to gently sloping reefs and from submerged boulders to coral gardens.

Diving on the West Ridge can be an adrenaline-filled drift, with amazing views, while the North Reef is a gentler experience over a hard coral garden.

KOH TACHAI

This island is famous for its pinnacle dive site, known by many as Twin Peaks, as well as more relaxed reef diving on the North Reef and South Reef. Normally, turtles, barracuda, pipefish, and nudibranchs can be found here. There is also a chance to see bigger species in this area like manta rays and whale sharks, especially from late January until April.

SURIN ISLANDS

SURIN ISLANDS

The topside scenery of Koh Surin, with evergreen forests, mangroves, and small beaches, surpasses even that of the picturesque Similan Islands.Underwater the reefs of Surin offer some of the greatest hard coral diversity in Thailand.

Across sites like Torinla Pinnacle, Hin Kong, and Turtle Ledges you are likely to see Napoleon wrasse, yellow-masked angelfish, bumphead parrotfish, tomato anemonefish and barramundi, as well as lots of turtles that still come ashore in this area to lay their eggs.

Due to the remoteness, not many liveaboard boats visit these islands and you will be able to enjoy the dive sites without sharing them with tourist hordes.

RICHELIEU ROCK

This limestone pinnacle was named after former Danish Naval Officer, Andreas Richelieu, who eventually became the only foreign born commander-in-chief of the Royal Thai Navy to date, appointed by King Chulalongkorn. One of Richelieu’s tasks was to modernise the outdated Navy charts, and as he had become such an influential and important figure, this potentially hazardous-to-ships rock that poked out from sea at low tide, east of the Surin Islands, was eventually named after him.

Barely breaking the surface at low tide, this horseshoe-shaped outcropping slopes steeply to a sandy bottom at 18 to 35 meters (60-120 Ft). This site offers great diversity for such a small and isolated spot. It also offers excellent multi-level diving and, because it’s a high-profile reef, there are always sheltered areas to hide from the current.

The marine life is prolific and includes amongst, many other things; pharaoh cuttlefish, large octopuses, all 5 varieties of anemone fish of the Andaman Sea, a variety of moray eels, ornate ghost pipefish, smashing mantis shrimps, harlequin shrimps, tigertail seahorses, Spanish mackerel, frogfish, many schooling snappers and occasional sightings of manta rays and whale sharks.

KHAO LAK

KHAO LAK WRECKS

Before disembarking in Khao Lak, if conditions and timing are favourable, there is a choice of easily diveable wrecks between the Similan Islands and the port of Tap Lamu.

The Boonsung and The Premchai are old tin miners that were sunk in the 1990’s and are a treat for underwater photographers as well as lovers of life of all kinds!

Only in 18m of water they are covered in nudibranchs and various kinds of shrimps. Many quite unusual honeycomb morays also made these wrecks home. There are also huge numbers of schooling fish as well as rays and sharks that can occasionally be seen.

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Similan & Surin Islands

Similan & Surin Islands

SIMILAN & SURIN ISLANDS

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 cabins left?

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