Rebreather Diving in Asia and the Pacific

Rebreather 2webSiren Fleet is the first liveaboard diving fleet to be able to provide our guests with the latest training courses available for the Poseidon Discovery MKVI recreational rebreathers. Courses will be taught on board using the Poseidon Discovery MKVI. which is the World's first fully closed & fully automated rebreather unit; a true revolution for recreational diving! Our Liveaboard Cruise Directors and diving instructors will be fully trained to teach you the latest courses from UWECO and PADI, so now you can join the recreational rebreather revolution and experience the world class diving in Asia and the Pacific in a different light.

The Poseidon Discovery MKVI recreational rebreather units will also be available for rental to certified users whilst on board our liveaboard diving trips.

"I dive a rebreather and have always had problems finding liveaboards which welcomed me and supported my needs. That is until I found the Siren fleet. From personal experience on two 10 day trips I can assure you they provide full rebreather support and the crew offer that 'extra' service that makes diving a pleasure. We have already booked our next trip on the Indo Siren, with rebreathers of course!" Brian Mecklem, Australia


  • UWECO
  • PADI Rebreather
  • PADI Adv. Rebreather
  • PADI Combo
  • Buy and Dive
  • SSI TRIP

UWECO Recreational Rebreather CCR Combo 18-30-40

rebreather instructorThe combination course from the UWECO training agency, based in the United Kingdom, was written for and designed around the use of the MKVI unit. The course consists of unit assembly and familiarisation, tests and knowledge development, you will then progress onto a "confined water" training session in which basic skills, emergency procedures and self rescue drills are performed under the guidance of your instructor. Upon successful completion of your "confined water" session your instructor will take you for "open Water" dives to a maximum depth of 40m. During your "open water" dives you will be expected to perform the skills you mastered in the shallow water session. After your course you will be able to refresh your knowledge with online tools and receive and "e-ticket" detailing your certification level.

UWECO 18-30-40 Recreational CCR Combo course runs over 3 days, includes all equipment rental, course materials & certification.

On Board Course price 645 Euro - Pre-Booked only 580 Euro!!

UWECO Dive Course Prerequisites

  • Certified to a minimum PADI Open Water Diver or equivalent to receive the CCR-18 ranking
  • Certified to PADI Advanced Open Water( or equivalent) with a minimum of 20 logged dives to 5m or deeper to receive CCR-30
  • Certified to PADI Rescue Diveer & Deep Diver (or equivalent) with a minimum of 30 logged dives to 5m or deeper to receive CCR-40
  • Be at least 15 years of age on commencement of the course
  • No Tec Diving experienced required!!

PADI Rebreather Diver on Poseidon Discovery MKVI

rebreather divers philippinesThis beginner rebreather diver course allows divers, already certified as PADI Open Water, to train on a fully closed circuit rebreather. The course consists of 2 "confined water" sessions followed by 4 "open water" dives to a maximum depth of 18m / 60ft. Our instructors will show you how to run through the appropriate pre-dive tests that ensure your equipment is fully functional prior to diving. "Confined water" sessions allow you to become orientated with the unit, practice basic skills and emergency procedures that you would have learned during your recreational diver training - but this time using the rebreather! During the "open water" sessions emphasis is placed on skills that will enable the diver to be fully independent from their instructor. The beginner course runs through emergency procedures and buoyancy control developing different techniques than you would have learned for an open circuit system.

PADI Rebreather Diver course runs over 3 days and includes all equipment rental, course materials and certification card.

On Board Course Price 595 Euro - Pre-Booked Only 535 Euro!

PADI Course Prerequisites

  • Certified to a minimum PADI Open Water Diver and Enriched Air Diver with 25 logged dives
  • Be at least 18 years of age on commencement of the course
  • No Tec Diving experienced required!!

PADI Advanced Rebreather Diver on Poseidon Discovery MKVI

rebreather divers underwaterThe advanced course allows divers, upon course completion, to dive to 30m /100ft or you may combine with the PADI Deep Diver Speciality and increase your max depth to 40m/130ft. The course consists of 1 "confined water" skills training session, followed by 4 "open water" dives and a final examination.

PADI Advanced Rebreather Diver course runs over 3 days, includes all equipment rental, course materials & certification.

On Board Course Price 550 Euro - Pre-Booked only 495 Euro!

PADI Course Prerequisites

  • Certified to a minimum PADI Advanced Water Diver and Enriched Air Diver with 30 logged dives
  • Be at least 18 years of age on commencement of the course
  • No Tec Diving experienced required!!

PADI Rebreather Diver & Advanced Rebreather Diver Combo

rebreather divers uw philippinesSave yourself time and money by taking our combination course during your 10-night liveaboard diving safari. Theory and skill sessions for both Rebreather Diver and Advanced Rebreather Diver can be combined over a 4-day course consisting of theory and practical set up, shallow "confirned water" skill sessions and a total of 8 "open water" dives to a maximum depth of 30m / 100ft.

On Board Course Price 999 Euro - Pre-Booked only 899 Euro!!

PADI Course Prerequisites

  • Certified to a minimum PADI Advanced Water Diver and Enriched Air Diver with 30 logged dives
  • Be at least 18 years of age on commencement of the course
  • No Tec Diving experienced required!!

Dive the Philippines with Your Own Poseidon Rebreather

Siren Fleet is offering you the opportunity to purchase your own Poseidon Recreational Rebreather and combine that with a training course and liveaboard diving in the Philippines.
Board the S/Y Philippine Siren for a 10-night diving safari on any of our itineraries and we will have your new Poseidon MKVI waiting for you. Take the UWECO course with one of our certified instructors, continue to dive on your own unit for the duration of your trip and then take your new unit home!

Philippines Rebreather Special

  • 10-night liveaboard diving Sarafi in the Philippines
  • Poseidon Discovery MKVI complete unit
  • UWECO Recreational Rebreather CCR Combo 18-30-40 course*
  • 10-nights Accommodation based on twin share
  • Full Board meals,snacks & refreshments
  • FREE Beer
  • Domestic Transfers (itinerary dependent)
*Divers must meet the course prerequisites as outlined under the course description.

Package Price 8000 Euro

Package applies to new bookings only.

Already travelling with the Siren Fleet? Ask our Reservations Team about purchasing your Poseidon Rebreather Unit on board the S/Y Philippine Siren.

SSI MKVI Zero to Hero Instructor Special

rebreather divers underwaterHosted by SSI instructor trainers Paul Leslie and Steve Newman, the Siren Fleet will run a “Zero to Hero” 10-night liveaboard trip in Komodo, Indonesia aboard their newest yacht the S/Y P Siren. During the trip you will be able to take your training on the MKVI all the way from beginner to instructor level and start teaching right away!


Space is limited to just 12 guests to ensure you receive the maximum possible attention from your instructors and get real hands-on experience.

SSI MKVI Instructor Trip runs over 10 days

Price just 2455 Euro per person includes :-

  • 10 nights aboard the S/Y P Siren
  • MKVI Beginner - Instructor Course & materials
  • All Meals Soft drinks, snacks & beer
  • Domestic flight Bali-Bima rtn
  • Marine Park & Port Fees
  • Visit to the Komodo National Park

All instructors have the option to rent an MKVI unit whilst on board for just 585 Euro or purchase your own unit from your local Poseidon Dealer and receive 1000US$ rebate from Poseidon upon trip confirmation!!!

To reserve your space and for further information please contact the Siren Fleet reservations team


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All of our recreational rebreather diver courses are unit specific and the training conducted is only appropriate for the Poseidon Discovery MKVI. Courses are designed with your safety and experience in mind. Upgrades and cross-over courses from alternate training agencies / units are also available on board each of our yachts.

Read A Student's Experience of Rebreather Diving in the Philippines with Instructor Eva, aboard the S/Y Philippine Siren

Rebreather Rentals

Poseidon Discovery MKVI Rebreathers can be rented on board, by certified users, on each of our liveboard dive yachts. Units, including electronics, tanks and bail-out tank can be rented on a daily basis from 65 Euro per day. Filters and oxygen fills at additional charge.

It is not advisable to switch between closed circuit rebreather and open circuit SCUBA during a day's diving and users must follow manufacturer guidelines and advice from our Cruise Directors

Siren Fleet liveaboards are "Rebreather Friendly". We can accept and support alternative closed circuit and semi-closed circuit rebreathers, however users must notify our reservations team prior to embarkation. We can provide sofnolime, O2 fills to 135bar and bail-out tanks at an additional charge. Unit specific tanks may not be available in each of our locations therefore guests are requested to bring their own.

Whilst every effort will be made to ensure MKVI rebreather course and/ or rental availability, Worldwide Dive and Sail & the Siren Fleet cannot be held responsible for any equipment malfunction or diver illness resulting in a missed course or limited rental capability. It is the sole responsibilty of the user to ensure they are fit for diving and have obtained the appropriate diver insurance coverage in relation to rebreather diving activities.