Extended Range.
From 45 m to 55 m, with up to two stages. The depth gate that opens the road to trimix.
What this
course is.
Past 45 metres, the rules change. Gas density goes up, narcosis goes up, decisions get more expensive. This course takes you to 55 metres on air with up to two decompression stages, builds the cold-water judgement that deeper diving demands, and prepares the in-water skill set you need before you ever pick up a helium fill.
Honest about
the cohort.
- Divers with Decompression Procedures wanting to push depth and bottom time.
- Wreck divers eyeing the deeper wrecks of Cabo de Palos.
- Anyone planning to take Trimix later who wants the depth conditioning first.
Drilled until
it's boring.
Skills are not a list to tick — they are habits to build. We drill them on land, drill them in the shallows, then take them into the dive.
Two-stage management
Travel + deco. Clip discipline. Switch sequence. Stowage on ascent.
Deep air judgement
Reading your own narcosis. Slowing down. Saying no.
Extended deco
Stop times reaching the hour. Buoyancy without thinking about it.
Run-time discipline
Watch the clock. Hit the schedule. Adjust without panic.
Wreck navigation at depth
Penetration limits, line drills, no-mount entries.
Helium-readiness primer
What changes at 55 m+ and why your next course is trimix.
The shape
of the week.
Before
you book.
- TDI Decompression Procedures or equivalent
- 75 logged dives
- Twinset or sidemount kit
- Minimum age 18
In the
course price.
- Theory sessions
- Six in-water training dives
- Use of additional stage bottle
- Course manual
Plan
for these.
- Certification fee
- Gas (cost)
- Boat fees for deep dives
- Insurance
Where this
takes you next.
Tech and cave are a ladder, not a catalogue. Here are the next rungs from this course.
TDI Trimix
Helium for the 60 m wrecks. Coming next on the Scuba Murcia programme list.
View course → Or sideways into caveIntro to Cave Diver
Past the daylight in Cueva del Agua, on the line.
View course → Wreck WeekCabo de Palos Wrecks
Five days on the Sirio, Stanfield and Naranjito — extended-range qualifying.
View course →Make contact.
Send a short message with your goals and certification history. We reply within twenty-four hours and answer every question before you commit.