Excellent instruction by Sam. Did TDI extended range trimix course. Top notch outfit. Also very good assistance with transport etc. Thanks Dave. Highly recommended

Surfacing with land almost not in sight.
The boat is the size of a pinhead on the horizon.
The sun is going down behind you, and you know it’s shining straight into the captain’s eyes—so he can’t see your tiny SMB.
If that situation doesn’t resolve fairly quickly, none of the outcomes are good ones:

All of this can be avoided by carrying a Gpacers Technology diver rescue system. It consists of:
This basic setup—used for self-contained, on-site monitoring—works best for us, especially since we operate in small wet boats.
For the initial setup, you’ll need an internet connection to download a map of the area you're diving in. Once saved, the app works completely offline, so you’re covered even in the most remote locations.
The receiver is placed on the highest point of the boat—in our case, roughly 2.5 meters above the water—giving us about a 6 km range. Once turned on, the receiver appears in the center of the map, knowing its location via GPS.
Now, if a diver surfaces and can’t see the boat for any reason, they just turn on their transmitter, and their location pops up on the map. The boat can go straight to them. We can also trigger an audible alarm to get the crew’s attention if they're focused on something else.
It’s that simple, and that easy to understand.
Diver searches are stressful, expensive, and often depend too much on luck—especially since it’s usually hours after a diver goes missing that the boat reports it and support is dispatched.
This system changes everything.
It becomes almost impossible to lose a diver in the first place.
We can “see” where they are as soon as they surface.
The level of comfort this gives both divers and operators can’t be overstated.
Even if the boat breaks down and can’t reach the diver, the app records a visible drift history. That means rescuers know exactly which way the diver is drifting—no need to guess where to begin the search.
Gpacer makes everything as secure as it can reasonably be.
The system can be tailored to your needs:
Next time you're diving at Tech Asia, you'll see this in action.

We have something for everyone at Tech Asia, beginner or experienced, why not join us for some of the best diving in Asia?
Rob Hilton, AustraliaExcellent instruction by Sam. Did TDI extended range trimix course. Top notch outfit. Also very good assistance with transport etc. Thanks Dave. Highly recommended
Excellent instruction by Sam. Did TDI extended range trimix course. Top notch outfit. Also very good assistance with transport etc. Thanks Dave. Highly recommended
Tony Exall, UKThe legend who is Sam Collett! This is the man who's taking me through all my Tech qualifications - one of the best instructors I've met, a man […]
The legend who is Sam Collett!
This is the man who's taking me through all my Tech qualifications - one of the best instructors I've met, a man of few words, but a bloody nice chap!
If you are considering doing any kind of tech qualifications, I can strongly recommend you get over to Puerto Galera and have a chat with Sam.
Tom DiverI have asked Dave months ago for some guided dives with CCR and DPV so everything was well organized.Finally I had 8 really exciting DPV dives together with […]
I have asked Dave months ago for some guided dives with CCR and DPV so everything was well organized.
Finally I had 8 really exciting DPV dives together with Sam. This area here offers dive sites with different topography so that you will never get bored.
Thanks a lot Sam for your excellent guiding :-)
Bing Sen Lim, SingaporeI did 8 days of diving with Tech Asia, including my Advanced Nitrox/Helitrox course with Sam Collett and DPV course with Tim Blömeke The people are amazing. Dave […]
I did 8 days of diving with Tech Asia, including my Advanced Nitrox/Helitrox course with Sam Collett and DPV course with Tim Blömeke
The people are amazing. Dave the owner is very responsive via WhatsApp and is able to address all my concerns before choosing to do my course with Tech Asia. Logistics were also smooth with them. Sam is a strict instructor who gives very thorough pre-dive and post-dive briefings with useful, personalised directions on what to work on. After the first two dives of my AN/Helitrox course, he makes sure everyone takes up certain roles (eg deco captain) during dives to ensure we learn by leading. I really liked this “letting students lead” approach as it made me confident that I’ll able to take up the same responsibilities if I were to dive with other tech divers elsewhere. Tim is a funny guy who gave great instruction during my DPV course. He is also very helpful to teach me how to configure my newly bought regs
Location wise, the dive shop is 5-10mins boat ride for all my dives during my stay, making dives very comfortable without post-dive colds and seasickness — I didnt even need to bring my windbreaker and towel for the trip when I knew that the dive sites are thattt close.
As a halcyon distributor, the rental equipments are also halcyon and in great working condition.
Most of my dives were in 1-2 customers per group, with 3 customers during one of my dives. The small group really enhanced my dive experience
Will return for more!
Basil Phang, SingaporeI did my TDI Sidemount course with them just last week. This was a course I wanted since my AOW. Their service was amazing from the arrangements for […]
I did my TDI Sidemount course with them just last week. This was a course I wanted since my AOW.
Their service was amazing from the arrangements for transfer by Dave Ross and his staff, everything was smooth and stress free.
My instructor was Sam Collett and he was one of the best instructors I ever had. He advocates for a very hands on and practical training which is the best and fastest way to learn.
He is highly experienced and knowledgable so he can always provide suggestions and alternatives for ways that skills can be done.
I can wholeheartedly recommend Tech Asia and will definitely return for further more advanced tech courses.