Thailand Master, Thailand

Name: 20% Off: Mergui Archipelago (Ranong - Ranong)
Start: 2027-01-21
End: 2027-01-28
Location: Thailand

9.2 Superb

Nitrox available
En-Suite bathrooms
Aircon Cabins
Non-Diver (Snorkeler) Friendly
Warm Water Showers

from $ 226 / day Check dates

“Everyone was always so happy and smiling and ready to help with any and everything! ”
Susan G, United States

Highlights

Authentic Phinisi experience
Dive gear rental on board

The 37m Thailand Master is a purpose-built sailing liveaboard designed by divers, for divers. Accommodating up to 18 guests in 7 air-conditioned cabins, it offers comfortable en-suite bathrooms with hot water, fresh towels, and storage space. Laid out to maximize comfort and functionality, Thailand Master provides the perfect balance between relaxation and serious diving adventure.

Guests can unwind on the sundeck lounges or enjoy meals in the indoor and outdoor dining areas, where meals are served buffet-style with vegetarian and other dietary options available. Between dives, relax with a book from the onboard library—ideal for identifying marine life spotted underwater—or enjoy movies and games in a welcoming social atmosphere designed for like-minded divers.

The shaded dive deck offers personal setup areas, dedicated storage, rebreather support, and nitrox refills. Rental equipment is available, and a diving tender ensures easy access to sites. Itineraries explore Thailand’s top dive destinations, including Koh Bon, Koh Tachai, Richelieu Rock, Koh Phi Phi, King Cruiser, Hin Muang, and Hin Daeng. From December to April, the Thailand Master also ventures into Myanmar’s spectacular Mergui Archipelago, visiting renowned sites such as Black Rock, High Rock, Tower Rock, and Torres Island.

Dive into the vacation of your dreams. Book online today!

Choose your departure date

Date

Itinerary

Price

Select

18 Oct

9 Days / 8 Nights

$ 2,720

FULL

27 Oct

9 Days / 8 Nights

Monthly Special + Free Nitrox! Valid for a limited time only. T&Cs apply.

~~$ 2,720~~ $ 2,040 Save 25% -25%

Select Cabin available

05 Nov

11 Days / 10 Nights

$ 3,400

FULL

16 Nov

11 Days / 10 Nights

Monthly Special + Free Nitrox! Valid for a limited time only. T&Cs apply.

~~$ 3,400~~ $ 2,720 Save 20% -20%

Select Cabin only 3 spaces left

27 Nov

7 Days / 6 Nights

Monthly Special + Free Nitrox! Valid for a limited time only. T&Cs apply.

~~$ 2,040~~ $ 1,632 Save 20% -20%

Select Cabin available

04 Dec

9 Days / 8 Nights

Monthly Special + Free Nitrox! Valid for a limited time only. T&Cs apply.

~~$ 2,720~~ $ 2,176 Save 20% -20%

Select Cabin only 2 spaces left

13 Dec

9 Days / 8 Nights

$ 2,720

FULL

22 Dec

9 Days / 8 Nights

$ 2,720

FULL

30 Dec

7 Days / 6 Nights

$ 2,040

FULL

21 Jan

8 Days / 7 Nights

Monthly Special on Individual Booking: 20% OFF! Pre-DEMA Group Offer: Pay 5 Get 1 Free! + Free Nitrox. Valid until November 30, 2026 only. T&Cs apply.

~~$ 2,765~~ $ 2,212 Save 20% -20%

Select Cabin available

29 Jan

8 Days / 7 Nights

Monthly Special + Free Nitrox! Valid for a limited time only. T&Cs apply.

~~$ 2,765~~ $ 2,212 Save 20% -20%

FULL

06 Feb

8 Days / 7 Nights

$ 2,765

FULL

Included: VAT, Airport Transfer, Hotel Transfer, Drinking Water, Soft drinks, Tea & Coffee, Full-Board Meal Plan (All meals), Snacks, Diving Package, Land Excursions, Cabin Towels, Deck Towels.

Required Extras: Fuel Surcharge ($15 / night), Park and Port Fees ($65-350 / trip).

Optional Extras: Gratuities, Local Flights, Alcoholic Beverages, Nitrox ($35 / day), Nitrox Course ($125), Rental Gear, Scuba Diving Courses ($250).

Book now, pay later: You can easily place your booking online. We will then hold the spaces for you and you can confirm with a payment later.

* Extra fees are shown per person.

Pay by bank transfer or online with

Best Price Guaranteed

Boat features

En-Suite bathrooms
Aircon Cabins
Non-Diver (Snorkeler) Friendly
Warm Water Showers
Air Conditioned saloon
Sun Deck
Camera Station
Non-Smoking Rooms
Charging stations
Indoor Saloon
Library
Outdoor Dining
Audio & video entertainment
Separate Rinse for u/w Camera
Leisure Deck

Food & Drinks

Al Fresco Dining
Vegetarian Options
Beer available
Wine Available
Full-board Option
Buffet style
Western Food
Local Food

If you have any specific dietary requirements whilst on-board your cruise, you can add this to your special requests on step 2 of the booking form. We advise limiting these requests to religious beliefs or food allergies.

Diving

Nitrox available
DIN Adaptors
Rinse Hoses
Dive deck
Tenders for diving

Languages Spoken

The crew speaks English.

Gear Rental

Equipment is available for rent on this boat. Please provide your rental needs on the booking form. If the rental gear is not included in the price, you will need to pay for it on board the boat. Show prices

Drawings & Vessel Layouts

Cabin Types

Boat Specifications

Year built: 2007

Length: 34 meters

Cruising speed: 8 knots

Engines: 1x 380 hP

Max guests: 18

Number of cabins: 7

Number of bathrooms: 7

Tenders: 2

Boat navigation and safety

Depth Sounder
Radio VHF/DSC/SSB
E.P.I.R.B. Distress System
Emergency Rafts
Life Vests
Oxygen
First Aid Kits
Satellite & mobile phones
Crew trained in first aid

Thailand Master Reviews

9.2 Superb

Vessel

8.7
Crew

9.3
Food

9.7
Diving

9.2
Value

9.1

9.6 Exceptional
Petra D
Germany

The most beautiful and best dive boat I know.
The amazing crew on this boat.
Recommended for
The crew including the kitchen, the boat itself, the dive sites
23 Dec, 2022

Translated from German

9.6 Exceptional
Alexandre R
Switzerland

A wonderful break
Turtles and wonderful dive sites. The stay onboard was also great with less divers than capacity and therefore made the cruise something special, privileged.
Recommended for
Dives, crew, boat
28 Mar, 2019

10 Exceptional
Grant G
United States

Best decision ever!
Amazing warm water and dives, 3-4 dives/day was amazing, diving on lockdown (totally organized, very little wait time to get in the water) :)
Recommended for
Friendly and knowledgeable crew/dive masters, food, atmosphere on the dives/boat
27 Mar, 2019

9.6 Exceptional
Thomas O
United States

Excellent liveaboard experience.
Diving Richelieu Rock. Sleeping under the stars at night. Fabulous food.
Recommended for
Staff, Staff, Staff
18 Apr, 2023

9.6 Exceptional
Jeffrey L
United States

Great 10 Day Journey!
After missing out on Mantas on the northern part of our trip and expecting to not see any mantas at all, we spotted an absolute beauty unexpectedly that made the diving portion of our trip. Hats off to the crew who put up with us over Xmas and New Years - they were awesome and welcoming and really made our trip enjoyable!
Recommended for
Crew, Itinerary, Hospitality
03 Jan, 2022

10 Exceptional
Nicolas C
Italy

Amazing boat, crew and dive sites
Diving around Surin island was amazing. The crew is really working for passengers to have the best possible trip. We made a visit to a Moken village one day we couldn’t do a dive due to weather conditions. I hope I can go back and do another live aboard in the same boat.
Recommended for
The whole crew is amazing. Food is really good, with both local and western dishes. The boat is very nice.
11 Jan, 2023

9.6 Exceptional
Phillip R
Australia

Diving in paradise, sleeping on beauty!
Picturesque scenery above and below the water. Plenty of tropical fish and corals. Great itinerary.
Recommended for
Crew were great, food was amazing and plentiful, diving was fantastic.
14 Oct, 2022

9.6 Exceptional
Adam B
United States

Trip of a lifetime!
Manta rays! The crew was fantastic and bent over backwards to help out in any way they could. The food was plentiful and amazing. Beautiful boat!
Recommended for
The crew, the food, the diving
02 Mar, 2020

10 Exceptional
Amber G
United States

The liveaboard of a lifetime.
This boat and its staff brought together a fantastic group of human beings with whom to spend a week diving. The accommodations and the gear were all top notch. During my time on board, I completed my advanced certification with Jonathan, who is an incredible mentor and cruise director. Also important, the staff and crew on The Phinisi are incredibly respectful of marine life and observant of the national park regulations. Highly recommend.
Recommended for
Staff, food, diving
18 Jan, 2019

8.4 Very good
Eric S
Canada

This trip makes you feel like you are back in the days of Jaques Cousteau's pioneering diving.
The mix of soft and hard corals in the Mergui islands is exceptional! Till date, there has been almost no bleaching. The Burma banks, situated far from land, are amazing dive sites. Giant ancient coral bommies with many nurse sharks sleeping underneath them and cruising around. There are also silver tips and a profusion of fish. The currents provided great drift dives and the visibility was excellent.
Recommended for
The Mergui islands are breathtaking. They are one of the most unspoiled Archipelagos in the world.. We did not see any other liveaboards during the entire trip.. Dive and cruise. They took us on a beautiful tour of the islands, the view was continuously changing..
13 Aug, 2026

91 reviews

9.2 Superb
91 Verified Reviews

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8.4 Very good
Angela W
China

Enjoyed A Happy Week in The Phinisi
It was a happy and safe trip with this beautiful boat. We had total 5 DMs for 15 divers, each group being small and efficient.
Recommended for
Helpful crew members, well-organized daily activities, and efficient dive groups.
28 May, 2019

8.0 Very good
Neville D
United Kingdom

Food and Diving or Diving and Food.
I enjoyed my first trip to Thailand, I have dived in several locations in 2023, 5 locations and loved them all but my trip on the Phinisi was the best of all, loved the boat and the crew were great, and and yes once again loved the food. The dive sites were varied and great with plenty of life, on one trip had to push the fish out of the way so I could see my buddy.
Recommended for
The dive sites were fab, the food was fab, and the crew could not do enough for you.
06 Jan, 2024

10 Exceptional
Ian F
United Kingdom

A wonderful way to spend Xmas and New Year
We were made to feel at home right away. Super experienced and friendly dive director and DM's made diving a relaxed and fun experience. Crew were amazing - every need catered for with a smile. Some truly world-class dive sites.
Recommended for
Brilliant Dive Crew and boat staff,Comfortable Boat,Great dive sites
11 Jan, 2021

9.6 Exceptional
Stuart O
United States

Amazing and tons of diving. The food was spectacular!
The staff and people were amazing and the food far exceeded my expectations.
Recommended for
People, diving, food
27 Feb, 2020

10 Exceptional
Neville D
United Kingdom

Second time for me
There are so many things about this trip, it is hard to state any one on its own, the crew were great and nothing and I mean nothing was to much hassel, and this applies to any time in the day or night. the diving was great too, there are so many reefs and all have their own unique personality if you can attibute that to a reef, for me it was the crew on the boat that made the difference and will be diving with them again.
Recommended for
The food, the diving and the crew,
07 Jun, 2024

10 Exceptional
Adrian H
United Kingdom

Look no further! This was one of the best diving experiences i've had to date.
Apart from the lucky visit by a 5m Manta Ray. Everything about this trip was perfect. I had planned to lose a bit of weight, However the food laid on was too good not to have seconds :). Super friendly crew and a very chilled and relaxed atmosphere all over the very spacious boat. Can't wait to return again to the Phinisi.
Recommended for
The dive sites were incredible, Pre dive briefings full of content. Boat comfort and crew was brilliant.
08 May, 2019

9.2 Superb
Ka eun L
South Korea

I'll try once again!
The first liveaboard in my life. It was not too long and not too short, 5 days and 4 nights. Storm was coming but we didn't worry about that, because of the stable crew and dive masters. I just really recommend this if you are on your first trip. Above all Sai's cooking will block sea sickness, I swear.
Recommended for
Friendly crew, fantastic food, safety check
18 Jan, 2019

9.2 Superb
Rob W
United Kingdom

Awesome
Amazing boat crew with faultless service and great diving.
Recommended for
Dive crew, Dive sites, The boat
21 Dec, 2019

9.6 Exceptional
Karly S
United States

Once in a lifetime experience
Highlights included: • New certifications • Beautiful scenery • Fun crew • Very knowledgeable divemasters • New friendships • Felt taken care of and safe • Amazing and abundant food
Recommended for
The entire crew was amazing, the dive sites were spectacular, and we had a fantastic group of divers!
19 Dec, 2019

9.6 Exceptional
Arthur A
Canada

Awesome diving, on a beautiful boat with a wonderful crew
Just back from an amazing 7D/6N dive trip aboard the Phinisi, visiting the Similan and Surin islands with my dive buddy. The best dive site (by far!!) was Richelieu Rock. We dove there four times, and I would have been happy to have just dived that site over and over. Our dive guide was Amelie, and she made sure to always find something cool and obscure on each dive. The rental gear was brand-spanking new, and so was pretty much everything else on this newly renovated boat. The boat is beautifully appointed, and we lacked for nothing. My buddy and I felt like kings, lavishly attended to do by the entire crew throughout our trip; from delicious and bountiful meals to assistance getting in and out of our dive gear. Deano’s dive briefings were entertaining and amazingly accurate. The whole team oozed experience and I highly recommend this boat, crew, and itinerary to anyone seeking to eat, sleep, dive, repeat :)
Recommended for
Richelieu Rock, Fun & Friendly people, impressive boat
04 Dec, 2018

10 Exceptional
Jiayi (Richard) C
Canada

Wonderful diving and crew
This was our first liveaboard trip, and the Phinisi did not disappoint. We had a great experience onboard—absolutely nothing to complain about. The crew did everything possible to ensure a safe, fun, and relaxing trip. The food was amazing, with a ton of healthy options to choose from.
Recommended for
Friendly crew, diving, food
16 Apr, 2024

9.6 Exceptional
Floyd B
United States

Great trip need to do more dives at richielu site
15 dives all good
Recommended for
Food, staff, diving
05 Aug, 2022

10 Exceptional
Susan G
United States

Already planning my next liveaboard trip!
I literally have nothing negative to say about my experience. Everyone was always so happy and smiling and ready to help with any and everything! The food was amazing and it will be an amazing memory that I will treasure forever!
Recommended for
The crew and dive guides were amazing, food was so plentiful and delicious, and the boat was comfortable and beautifully maintained.
05 Feb, 2022

8.8 Fabulous
Jukka Arimatias R
Finland

Excellent crew
Fantastic, skillful and super friendly crew was the highlight of this liveaboard. Excellent food also. 4 dives a day is a lot but everything worked seamlessly! Thank you!
Recommended for
Crew, food, Richelieu Rock
17 Nov, 2022

10 Exceptional
Karin B
Germany

This crewed ship makes divers' hearts beat at the highest level.
Each and every one of the team contributed to the great success of this trip. Without exception, everyone was friendly, attentive and took care of the customers in the best possible way. The divemaster was outstandingly good and I felt very well informed on every dive, very safe and was able to enjoy the great dive sites. The beautiful ship also turned out to be very well equipped and my cabin was also very nice! I am totally thrilled with this great diving trip!
Recommended for
The crew ! From CPT to boat trips, cook and divemaster, all very outstanding professional and personable!. The food and the diving area. The Phinusi and its localities.
21 Oct, 2024

10 Exceptional
Alexander B
United Kingdom

Perfect 🤩
Smooth experience from start to finish - everything handled by the crew. Diving in small groups on empty dive sites. Highly recommended.
Recommended for
Friendly and professional crew, excellent food,
26 Jan, 2023

10 Exceptional
Fernando A
Spain

A magical ship in an exceptional setting
The combination of a completely special boat and a paradisiacal setting. Also Richelieu Rock as a magnificent diving spot.
Recommended for
The Food, the Crew and the Boat
19 Apr, 2024

Translated from Spanish

9.2 Superb
Christine J
United States

Easiest to spot at every site!
The entire boat, crew and guests were super friendly and made the trip better. It was easy to sit and talk to anyone/everyone. The islands and sunsets were very photogenic. The only bummers were visibility (lots of plankton) and some strong currents but that means big pelagics, so it wasn't much of a bummer. I would definitely recommend The Phinisi (or Siren fleet) based on this trip.
Recommended for
1. The crew, both dive and boat were so helpful. When I had equipment problems they fixed them very quickly or swapped in rental gear. 2. The food! Si (the chef) made sure the vegetarians and celiacs had special food without compromising on quality or diversity. 3. The variety of underwater life! Mantas, whalesharks, turtles, sting rays, octopuses, reef sharks, all the triggerfish and so much more.
03 Mar, 2020

9.6 Exceptional
Damir P
Australia

Great dives, great food, great staff.
Dives were so much fun. The dive masters were relaxed but still took care of us without babying us. After every dive, the crew would provide you with hot drinks and we were fed five times a day.
Recommended for
Frequent dives. The attentiveness of the crew. The food.
15 Jan, 2026