South Siam 4 dives around the Similans every day of the week except Wednesdays and Sundays when she goes up to Koh Bon, Koh Tachai and Richelieu Rock for the day.

You can basically join South Siam 4 any morning except Wednesdays and Sundays. You can also stay on South Siam 4 as long as you want, but you cannot get off the boat on a Wednesday or Sunday.

Prices include :
- Accommodation on board
- Full meals, refreshment/snack, unlimited soft drink (No alcohol drinks)
- Tanks, Weights & Weight belts
- Dive Master
- Land transfer between the boat and airport

Prices exclude :
- Air fare and tax
- Fuel charge $60 per trip
- Entry fee for Similan National Marine Park $7 per day + $25 entrance fee
- Rental diving equipments are BCD, regulator, fin, mask, torch etc. (full set = $20 per day)

• Length: 28 metres
• Width: 6.5 metres
• Cabins:
  • 10 Twin cabins
  • 4 Double bed cabins
• Max: 28 guests sleeping
• Bathroom: 6
• Engines: 2 x Hino 420 HP
• Generators: 2 x 50KW and 1 x 10KW
• Compressor: 2
• Saloon and Sun Deck
• Emergency oxygen
• Plus two freshwater showers on the dive Plat form