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MV Nam Sai

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Boat Overview

MV Nam Sai Overview

Nam Sai diving day trips to Similans
Type: Day trip
Departs from: Khao Lak.
No. of guests: 50

Currently not running day trips, but this could change at any time. Please contact us for comparable alternative Similan diving day trips.

Diving on Nam Sai offers the best of both worlds: day trip convenience and the comfort and luxury of a large boat to relax on. At 25m in length, Bam Sai is the size of many liveaboard diving boats, but she goes out to the Similans and back almost every day. Able to cruise at 12 knots, she can reach the dive sites in a very comfortable and relaxing three hours. Similan Islands diving day trips don’t get much more comfortable than on Nam Sai, and the prices are extremely reasonable. There is plenty of space to move around, sit down and eat or relax, and a large dive platform for gearing up. 

MV-Nam-Sai-DivedeckNam Sai is a scuba diving day trip boat with a difference. She has three decks and is the size of a liveaboard boat. However, she just goes out to the Similan Islands or Koh Bon and back nearly every day of the week. For those who don’t want to be racing to the dive sites on a bouncy speedboat, Nam Sai is the perfect balance of comfort and convenience. She has plenty of places for guests to sunbathe, eat and drink, watch tv, socialize, or find some private time. The diving deck is massive, meaning that there’s more than enough space for the divers to gear up and there are lots of areas to receive dive briefings. There’s a bar area and plenty of tables and chairs. A western buffet ensures that every taste and appetite is taken care of, including children and vegetarians (on request). There are fresh water showers, an air-conditioned lounge and free fruit and snacks all day long. Guests diving with the boat’s Divemaster guides are supplied with a dive computer for free, and snorkellers get free equipment and a professional snorkel guide. With two dinghies to take care of picking up divers and transporting snorkellers to the best spots, everything is well organised and convenient. While some may think that a speedboat is the best option for Similan Islands day trips, they should consider that the extra time spent on Nam Sai flies by due to the comfort and facilities on board.

Genuine MV Nam Sai Reviews

Read real reviews from people who have dived with MV Nam Sai
Sarah MV Stingray
Sarah
Divers Nationality: French
Dive date: 28 February 2026
Boat rating: 10/10
Easy, simple and well.managed live aboard, liked the flexibility of staying as many days as you want, which was practical. Overall the daytrippers on the boat were not really an issue because you don't dive at the same time so it didn't feel too crow...read more
Tim Ireland  MV Sawasdee Fasai
Tim Ireland
Divers Nationality: British
Dive date: 27 February 2026
Boat rating: 10/10
The boat crew, the dive sites, the boat and the whole atmosphere were great. But particularly the boat crew - infectious joy.
Matt Johnstob MV Blue Dolphin
Matt Johnstob
Divers Nationality: Canadian
Dive date: 27 February 2026
Boat rating: 10/10
Where to start. This was our first liveaboard and it truly set the bar very high for all of them coming after. The entire staff and dive crew were so wonderful and the food was amazing. We were even lucky enough to see several Manta Rays at Koh Tacha...read more
Peter MV Stingray
Peter
Divers Nationality: German
Dive date: 24 February 2026
Boat rating: 10/10
The diving trip was perfectly organized, including taxis before and after the trip. The dive sites were breathtakingly beautiful, varied, and teeming with marine life. The overnight accommodation on board is highly recommended! The food is good, and ...read more
Donald
Divers Nationality: Canadian
Dive date: 23 February 2026
Boat rating: 10/10
I had an amazing time on Seatopia. The food was excellent, the boat is fun, with good cabins, a great sun deck, lovely beanbag seats, excellent captain and crew. My divr master Alyssa Mitchell is beyond fantastic. She fixed my breathing, buoyancy, an...read more
Katelyn
Divers Nationality: Taiwanese
Dive date: 23 February 2026
Boat rating: 10/10
From start to finish, this diving experience was absolutely exceptional — a true 10/10. The team was incredibly professional, safety-focused, and genuinely passionate about the ocean. The briefing was clear and detailed, yet still relaxed enough...read more
Toni Spirit of Maldives
Toni
Divers Nationality: British
Dive date: 22 February 2026
Boat rating: 10/10
Boat was very comfortable, staff were amazing, diving was superb. Am already planning next year's return trip!
Tom H.
Divers Nationality: American
Dive date: 22 February 2026
Boat rating: 10/10
Super organized. I was 100% satisfied with my days onboard the Koon9. Linda, the manager, and the entire team were outstanding in delivering customer-focused and safe scuba diving and onboard support. It operated like a well-oiled machine. Food was...read more
Peter Miles
Divers Nationality: British
Dive date: 18 February 2026
Boat rating: 9/10
Excellent crew, well organised dives Rooms rather small Food excellent and plentiful Drinks not too expensive and many free options
Gemma K
Divers Nationality: Australian
Dive date: 17 February 2026
Boat rating: 10/10
Our time was absolutely fabulous. We stayed 3 days and two nights. The boat staff were so helpful and dive masters were great. We had Billy and he was amazing. My partner has a permanently injured ankle and the team were so willing to help to make th...read more
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Nam Sai diving day trips to Similans
MV Nam Sai
Type: Liveaboard
Departs from: Khao Lak.
No. of guests: 50
From: Ask
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