Have been out quite a few times with these guys now and every time I see somethin new...The corals have returned this season and are full of color unlike last season when the weather affected the marine life...

Oktavia have some great guys and gals working for them who are always willing to pull out the stops just to make my Thailand diving trip the muts nuts. The liveaboards are a great way, for people like me, to dive morning, noon and night and the prices are pretty good too.

In my book Oktavia comes high for Similan diving...

Not sure of a website but here's a link to their Facebook page  

https://www.facebook.com/pages/MV-Oktavia/194556750585584