Sea World 1 Liveaboard, Thailand

  • Rating 9.4 out of 10 9.4 Superb
    • Free Internet
    • Nitrox available
  • from $ 99 / day
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“First things first: Sea World 1 is a budget vessel and it's priced as such. From that perspective, it met our expectations with so…”

Irina S, Flag of United States United States


  • Small dive group ratios for a personalized experience
  • World-famous dive sites like Richelieu Rock
  • Nitrox available on board

The SeaWorld 1 liveaboard offers year-round diving in Thailand (Similan, Surin, Phi-Phi) and Myanmar (Mergui Archipelago). SeaWorld 1 caters to 18 guests in 9 cabins. On the main deck are 3 en-suite double-bed master cabins (with private bathrooms) and 2 double-bed master cabins. On the upper deck, there are 4 bunk-bed cabins. All rooms feature individually controlled AC and storage space. The upper deck has a lounge area with a TV, DVD, and a sound system. There is also a spacious sun deck with bean bags and beach beds, perfect for relaxing between dives. During the day, the chef serves 4 delicious meals of authentic Thai and international food. Tea, coffee, soft drinks, snacks, and water are provided throughout the day.

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Included: VAT, Drinking Water, Soft drinks, Tea & Coffee, Full-Board Meal Plan (All meals), Half-Board Meal Plan, Snacks, Special Dinner, Diving Package, Night Dives, Land Excursions, Snorkel Gear, Cabin Towels, Complimentary Toiletries, WiFi internet.

Required Extras: National Park Fees (700 THB per day).

Optional Extras: Airport Transfer, Hotel Transfer, Alcoholic Beverages, Nitrox (2,500 THB per trip), Nitrox Course (5,000 THB per activity), Private Dive Guide (2,000 THB per day), Rental Gear (700 THB per day), Scuba Diving Courses (9,500 THB per activity).

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.

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Drawings & Vessel Layouts

#deckplan floorplan

Cabin Types

Sea World 1 Reviews

  • Rating 9.4 out of 10
  • 9.4 Superb
  1. Vessel
  2. Crew
  3. Food
  4. Diving
  5. Value
  • Rating 8.4 out of 10
  • 8.4 Very good
  • Irina S
  • Flag of United States United States

Decent first liveaboard with some kinks to work out

First things first: Sea World 1 is a budget vessel and it's priced as such. From that perspective, it met our expectations with some caveats. PROS: 1. The food was good and it kept getting better each day. Hats off to the chef! 2. The boat boys were super efficient, attentive and friendly. 3. Our daily itinerary was very dynamic and well-paced. 4. There was always hot water in our cabin. 5. Our dive master, Audrey, was friendly and fun outside of the water. CONS: 1. The dives were not always well-planned. On three different occasions when the current was too strong for us to dive the intended route, we ended up just floating around without a back-up plan. Unfortunately, those were supposed to be some of the most exciting dives of the trip so it was a disappointing that they were not fully thought through. 2. Even though there was a secondary dive master, he did not dive with us which meant that the consistent ratio was 1 dive master for 5 divers. It would have been a much better experience if the secondary dive master had participated in our dives. 3. Audrey seemed like a relatively new instructor on this liveaboard so she may not have known the dive sites as well as the secondary dive master. It would have been a much better experience to change up lead dive masters every once in a while to take advantage of his local knowledge. 4. The secondary dive master dove exclusively with 4 other professional divers who did not make much of an attempt to socialize with the rest of the divers so there were always two distinct groups on the boat during meals and breaks. 5. There were not actual mattresses in the rooms. The "mattresses" are made of the same rubbery, hard material that is used for the outdoor mats and cushions on the eating benches. This made a good night sleep virtually impossible for 4 nights. They absolutely need to buy real mattresses for the rooms.

Recommended for
The food, Reshilieu Rock, the fast-paced daily itinerary
  • Rating 8.8 out of 10
  • 8.8 Fabulous
  • Kendra R
  • Flag of United States United States

Good diving, food and support!

Diving was fabulous, food and Thai support service was excellent.

Recommended for
Food was good Thai food, special vegetarian options, Thai crew was fabulous, super friendly and helpful.
  • Rating 9.2 out of 10
  • 9.2 Superb
  • Thomas G
  • Flag of United States United States

Pleasant dive trip in Myanmar

The boat and crew were excellent. The diving is pleasant but I was disappointed that the marine park is basically unprotected. There were fishing boats and squid boats everywhere. Not what one would expect after paying an expensive marine park fee. Obviously, this affects the number and size of fish that divers will encounter. A travel tip if you are interested in extending your trip in Myanmar. The boat leaves from Ranong, Thailand and immediately stops in Kawthoung, Myanmar to pass Myanmar immigration. You can obtain a Myanmar visa on your own and disembark in Kawthoung and stay in southern Myanmar.

Recommended for
Three best things; the boat, the crew and the food. The diving was good but not great

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