The Phinisi, Thailand


The Phinisi, officially known as ‘Cheng I Sao’ is the sister boat to The Junk and offers fantastic dive itineraries in Thailand and Myanmar from November - May each year. Four different itineraries are on offer, varying from 4 to 10-nights in length. The Phinisi was custom built for divers, and the facilities reflect that. There is a shaded diving deck, personal set-up and storage area, as well as nitrox and quality Aqualung equipment available to rent. An SMB is also offered for use during the trip free of charge. Various itineraries are available in Thailand which explores the clear blue waters of the Similan Islands. Dive sites visited include Koh Bon, Koh Tachai and Richelieu Rock. The Phinisi also visits some of the best dive areas in Myanmar, including Black Rock, High Rock, Tower Rock and Torres Island.

Topside the Phinisi liveaboard caters to 18 guests in a choice of cabins to suit different budgets. Each cabin features individually controlled AC, ensuite bathrooms with hot water, bath towels, storage space and lockable safety box. Social areas include a sundeck with loungers, indoor and outdoor dining, 42" flat screen TV and a library of books, movies and games. All meals are served buffet style and self-service drinks and snacks are available at an additional charge.

The experienced captain, crew and dive guides of The Phinisi are on hand to help make it a memorable trip. Call us or book online today to reserve your space.

Choose your departure date


Included: VAT, Accommodation, Tanks, Weights, Belts, Dive master services, All meals, Towels Provided

Excluded: Rental gear, Nitrox, National Marine Parks fee (from 1800 baht per trip), Drinks and Snacks

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 and are subject to change.

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Boat features

  • Leisure Deck
  • Camera Station
  • Audio & video entertainment
  • Library
  • Aircon Cabins
  • Sun Deck
  • Indoor Saloon
  • Non-Diver (Snorkeler) Friendly
  • Separate rinse for u/w camera
  • Camera room with table and charging point
  • En-Suite bathrooms

Food & Drinks

  • Western Food
  • Local Food
  • Buffet style
  • Beer available

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.


  • DIN Adaptors
  • Nitrox available
  • Tech diving
  • Rinse Hoses
  • Dive deck
  • Tenders for diving

The crew speaks English.

Gear Rental

There is diving gear available to rent on this boat. Please provide your rental needs on the booking form.
You will need to pay for the rental gear on board of the boat. Show prices.

Boat Specifications

  • Year built 2007
  • Length 34 m
  • 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

The Phinisi Reviews

  • 9.6 Exceptional
  • 1 Verified Review
  1. Vessel
  2. Crew
  3. Food
  4. Diving
  5. Value
  • 9.6 Exceptional
  • Arthur A
  • Canada 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