Set your course for the Andaman Sea's most celebrated sites aboard the Thailand Aggressor liveaboard. This 35-meter steel-hull motor yacht brings a globally respected standard of operation to Thailand's rich waters. Since 2013, it has offered divers 2 distinct cruises: the northern route unveils the granite boulders of the Similan Islands and the marine life magnet of Richelieu Rock, while the southern itinerary explores the dramatic pinnacles of Hin Daeng, Hin Muang, and the remote landscapes of Koh Tarutao. This dual itinerary structure allows you to choose between iconic reef systems or advanced pelagic encounters.
The Thailand Aggressor accommodates a maximum of 16 guests across 8 ensuite staterooms, each equipped with entertainment systems and individual climate control. Social spaces are designed for relaxation and camaraderie. A dedicated dining room and a separate, well-appointed saloon provide air-conditioned retreats, while the sun deck invites you to unwind with its loungers, shaded seating, and a welcome Jacuzzi. The inclusion of house wines and local beers complements evenings spent recounting the day's underwater adventures.
All diving activities onboard the Thailand Aggressor are conducted from dedicated, 9-person skiffs, granting swift, direct access to dive sites while keeping the main vessel stationary - a system that maximises time underwater and reduces diver fatigue. The dedicated crew manages gear from setup to rinse, allowing you to step into a prepared setup for each departure. Photographers benefit from a designated work station with editing computers, camera tables on the dive deck, and strategically placed charging stations.
The Thailand Aggressor liveaboard is built upon a foundation of safety and proven seamanship. It meets stringent international SOLAS (Safety of Life at Sea) standards, a certification that distinguishes it within the regional fleet. This commitment is further evidenced by advanced navigation electronics, comprehensive communication systems, and a crew trained in rigorous safety protocols.
The Aggressor Fleet's decades of liveaboard management bring a level of predictability and professionalism to every aspect of the voyage. From the consistency of the culinary offering to the methodical dive briefings and the crew's attentive service, the experience reflects a deep understanding of what travelling divers value. It’s a model refined over years across the world's oceans, now dedicated to showcasing Thailand's underwater treasures.
The Thailand Aggressor liveaboard is a great option for divers who prioritise a structured, safety-conscious, and comfortably appointed approach to dive cruises. It transforms a trip through the Andaman Sea from a simple holiday into a smoothly executed diving expedition. For those looking to discover Thailand's renowned marine biodiversity - from the gentle giants at Richelieu Rock to the thrilling currents of Hin Daeng - the Thailand Aggressor provides a reliable and highly capable yacht from which to do so.
There are 3 Master staterooms with a queen bed: 1 on the lower deck (2.9 x 3.5m) and 2 on the main deck (2.6 x 3.5m). 5 Deluxe staterooms on the middle deck (2.6 x 2.9m) all with 2 single beds side by side that are convertible to king-size double bed. All staterooms have en-suite private bathrooms.
All the liveaboard staterooms have:
Independent air-conditioning
Sea-view windows (1 Master stateroom has portholes only)
Toilet, hot water shower and hand basin
Bedding, bathrobes, hairdryer and towels
22-inch flat screen TV plus hard drive of films
Reading lights
Daily housekeeping
Reading lights
Wardrobe and mirror
Mains outlet 220-240 Volts - 24 hours per day
Life jackets and fire extinguishers
Bedding and luggage storage space
No. of bathrooms / showers - 8 / 8 - hot water
Similan, Koh Bon, Koh Tachai & Richelieu Rock (8 Days / 7 Nights - 27 Dives)
Diving environment: advanced divers, beginner divers, very popular, wall diving
Dive sites and activities: Similans, Koh Bon, Koh Tachai, and Richelieu Rock
Day 1
Upon boarding he fantastic Thailand Aggressor liveaboard Andaman at Sun Sea Travel Pier in Khao Lak, the tour leader will welcome you, assign your cabin, and detail the boat's features and the itinerary for the coming days. A welcome dinner is served as the boat journeys towards the Similan Islands, arriving around midnight. After a restful night in your cabin, your diving adventures will commence the following day.
Core Days
Embark on this unparalleled liveaboard diving safari, designed to maximise your underwater time with a schedule of up to 4, or even 5, dives per day when conditions are favourable. This action-packed itinerary includes the thrill of night dives, allowing you to witness the dramatic transformation of the reef after sunset. Your journey with the Thailand Aggressor will focus on the legendary marine park of the Similan Islands and the celebrated offshore pinnacles, renowned for some of the most biodiverse and dynamic dive sites in Thailand. The Similans themselves are characterised by immense granite boulders that have created a labyrinth of swim-throughs, caverns, and dramatic walls, all home to a huge variety of tropical fish.
The liveaboard adventure continues at the submerged pinnacles of Koh Bon and Koh Tachai, where nutrient-rich currents attract pelagic giants. These sites are a mixture of hard and soft coral gardens and are your best opportunity for breathtaking encounters with passing manta rays and the majestic whale shark. The crown jewel of the trip is undoubtedly Richelieu Rock, a solitary underwater pinnacle consistently ranked as one of the planet's top dive sites. This horseshoe-shaped site is a magnet for marine life, entirely covered in vibrant purple and pink soft corals. Here, you can observe leopard sharks resting on the sandy patches, stingrays camouflaged below the surface, and large schools of trevally and barracuda patrolling the blue.
Day 8
The cruise concludes on Saturday morning as the Thailand Aggressor returns to Khao Lak. After a final breakfast onboard, you and your fellow guests will disembark to an awaiting minibus and be transferred to the designated host hotel or airport for your onward travels.
Koh Tarutao, Hin Daeng & Hin Muang (8 Days / 7 Nights - 27 Dives)
Diving environment: advanced divers, beginner divers, caverns, healthy reefs, off the beaten track, very popular, wall diving
Dive sites and activities: Koh Ha, Hin Daeng, Hin Muang, Koh Lipeh, Bida Nok, Bida Nai, Phi Phi, Phuket: King Cruiser Wreck, Shark Point, Anemone Reef, Racha Islands, Koh Dok Mai
Day 1
Once onboard the Thailand Aggressor at Panwa Pier in Phuket, the tour leader will assist with your cabin assignment and conduct a comprehensive briefing. You'll enjoy a welcome dinner as the liveaboard sets sail. After a good night's sleep, your first day of diving will commence.
Core Days
Your diving adventure in the Southern Andaman Sea promises an exhilarating schedule of up to 4, sometimes 5, dives per day when conditions allow, including thrilling night dives to discover the wonders beneath the clear blue waters. The liveaboard itinerary is packed with world-class sites, beginning with the submerged pinnacles of Hin Daeng and Hin Muang, which are blanketed in vibrant red and purple soft corals and attract significant fish action, including majestic manta rays and the occasional whale shark.
Further north, the Koh Phi Phi National Park offers a host of sites with mini-walls and shallow coral gardens teeming with exciting marine life like blacktip reef sharks, seahorses, and ghost pipefish. Near Phuket, the iconic trio of Shark Point, Anemone Reef, and the King Cruiser wreck await, covered in colourful anemones and soft corals, and are famous for their leopard sharks and huge lionfish. Don't miss Koh Dok Mai, a sheer rock wall hiding a spacious cavern and rare critters like bamboo sharks.
The cavern systems of Koh Ha and the rich reefs of Koh Tarutao, home to about a quarter of the world's tropical fish species, offer incredible biodiversity where dolphin encounters are common and the rare dugong can be found. This region truly caters to all, from beginner divers exploring healthy, popular reefs to advanced divers seeking off-the-beaten-track wall dives and caverns, with the constant promise of unforgettable pelagic encounters.
Day 8
Your tour concludes on Saturday morning as the Thailand Aggressor liveaboard returns to Phuket. Following a final breakfast, a minibus will transfer you and the other guests to the airport or host hotel.
[Information is best estimate in ideal circumstances and subject to changes beyond our control. The itinerary is a guide only and may be adapted to best suit the weather, tides, currents, availability and other prevailing events. Price is for the cruise, not for an exact number of dives].
The Aggressor liveaboard fleet is accustomed to catering to American appetites so expect tasty food and plenty of it. All meals are taken in the spacious, air-conditioned dining area on the main deck, which serves as the social heart of the Thailand Aggressor. The daily schedule is structured around diving activities, with meals served at set times to fuel your underwater adventures. A typical day begins with an early light refreshment before the first dive, followed by a hearty cooked breakfast to enjoy afterwards. Lunch is a generous buffet served midday, and after the afternoon dives, a served dinner is presented.
The culinary philosophy onboard focuses on a menu that skilfully blends Thai and Asian specialities alongside international classics to cater to diverse tastes. The overall atmosphere is one of communal dining, where delicious food and shared stories of the day's dives create an unforgettable part of the liveaboard experience.
* For breakfast, expect both hot options like eggs cooked to order, bacon, and sausages, as well as continental items such as fresh fruit, toast, and cereals.
* The buffet lunch offers a wide array of choices, which might include dishes like phad se-iw (stir-fried noodles with dark soy sauce), morning glory, stir fried pork with hot basil, roast duck curry, or Vietnamese summer rolls with fresh tuna.
* Dinner is a more formal, plated service featuring multi-course meals that might include steak cooked to order with mashed potatoes and gravy, pork and ginger soup, mango salad with crispy fish, ton katsu pork served with uruchimai rice, consistently concluding with delightful homemade desserts like Thai coconut milk and melon, pannacotta, or tiramisu.
Throughout the day, a selection of complimentary snacks, fresh fruit, and biscuits are available to keep energy levels high between dives.
The beverage station is always open, providing free access to coffee, a variety of teas, hot chocolate, soft drinks, and water. Local beer and wine are also included in your cruise package.
The cruise culminates in a final evening cocktail party before dinner.
The crew is adept at accommodating dietary requirements with advance notice.
DEPARTURE SCHEDULE & PRICES
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MORE TRIP DETAILS
Dive experience: Aggressor expect divers to accept personal responsibility for their fitness to dive on their Thailand liveaboards.
Cruise price per person includes: Cabin accommodation with air-conditioning, breakfast, lunch, dinner, snacks, coffee, tea, drinking water, soft drinks, local beer and wine, roundtrip transfers to the boat from the airport and host hotel, dives (as detailed in the trips above), 3 experienced English-speaking dive leaders and 1 camera man, tanks, weights and weightbelt, sales tax.
Cruise price per person excludes (mandatory, unless customer provides own): Port and park fees USD95 (+7% VAT), scuba equipment rental (incl dive computer: USD225), dive insurance. Unless otherwise stated, all the listed items need to be paid on arrival (cash or card).
Optional extras: Nitrox fills for enriched air certified divers: USD150, dive computer. Unless otherwise stated, all the listed items need to be paid on arrival. Note: prices of items purchased onboard are subject to change.
How to get there: All liveaboard charters with the Thailand Aggressor run Saturday to Saturday. The North Andaman Sea trips depart from Tap Lamu Pier and the South Andaman Sea trips depart from Chalong Pier; both are located 1-1.5 hours from Phuket International Airport (HKT). Cruises depart at 8 pm and a minibus service from around Phuket Airport to the boat is provided at 4 pm. 7 day advance notification is required for transfer arrangements.
For North Andaman Sea trip, if you are already on the island, pick up will be 4 pm - 5 pm from the host hotels in Khao Lak (Kantary Beach Hotel and Villas or the Khao Lak Palm Beach Resort) for transfer to the dive boat in Thap Lamu. Boarding will take place about 6 pm.
For South Andaman Sea trip, if you are already on the island, pick up will be 6 pm - 7 pm from the host hotel in Phuket (Westin Siray Bay Resort and Spa) for transfer to the dive boat in Panwa pier. Boarding will take place about 8 pm.
The last dive of the trip will be at around 2 pm on the last day of the trip, and the boat arrives back at the pier later that evening. Disembarkation is at 8 am. Please wait at least 18 hours before flying after diving.
For more details, including airlines, see our Thailand travel information section.
Non-diver rate: USD200 off the full published price (does not apply to specials).
Single supplement (if you do not want to share accommodation): This is optional - single travellers may agree to share a cabin and pay the regular price, or pay a supplement of 65% of the full published price for their own cabin.
Dive clubs and group discounts: Pay for 6 guests and 1 extra person can join the cruise in a Deluxe stateroom free of charge (6+ guests). Pay for 10 guests and 2 extra persons can join the cruise free of charge (10+ guests).
Whole boat charter rate (per night): Pay for 13 guests and 3 extra persons can join free of charge (total 16 guests).
Click to view product. Special discounted trips highlighted in yellow
