Surface
Interval Scuba
179 S. Watson Rd. Suite 404
Arlington, Texas 76010
817-652-DIVE (3483)
Discover Tec
This short session allows divers to give technical diving a try. It does not result in a certification, but lets a diver experience wearing the extra gear involved in technical diving and understand the rationale behind it.
Tec 40
The entry point into the
technical range, Tec 40 provides a transition
from recreational to technical diving. Although
the use of full tech gear (doubles and wings) is
preferred, it does allow modified use of
recreational gear in some situations, provided
the diver has two separate regulators, with one
of the first stages fitted with a long hose.
(For
example, a main cylinder and pony cylinder
combination). The intended working limit for a
diver at this level is 40 metres/130 feet with
up to 10 minutes of non-accelerated
decompression. They may use any EANx mix with up
to 50% oxygen content or air. To enroll on the
course, a diver must be the equivalent of a PADI
Advanced Open Water diver, with an EANx Diver
rating and have deep recreational diving
experience.
Tec 45
The diver must use full ‘standardised’ tech rig, including wings and doubles plus an additional deco cylinder (note that side mounted cylinders are an acceptable alternative to back mounted doubles throughout the TecRec range). The course allows the diver to go to 45 metres/145 feet and make accelerated decompression dives using any mix of EANx or pure oxygen. A diver must have the equivalent of a Tec 40 rating to enroll on this course.
Tec 50
This course represents a high level of competency for a technical diver. Although the option exists to make the last dive of the course using trimix, it is intended as an air/nitrox rating and by the end the diver can dive to a maximum of 50 metres/165 feet and make extended, accelerated decompression dives.
Tec Trimix 65
This course opens up the advantages of trimix to the diver, and divers are qualified to make multi-stop decompression dives that employ EANx and oxygen for accelerated decompression, using any trimix with an oxygen content of 18% or more. They can dive to a maximum depth of 65 metres/210 feet.
Tec Trimix

This course lets the diver go deeper, opening up the option of using travel gases and trimix with less than 18% oxygen content. Dives made during the course can be as deep as 90 metres/300 feet. Once qualified, the diver can start to explore deeper; for this reason there is no numbered suffix after the course title as in the rest of the range — there are no limits placed on how deep the diver can go after training, providing they build their experience gradually.
PADI Cavern
This is a challenging and very exciting course that includes four training dives over at least two days. During your first open water dive you'll practice line handling, reel use and emergency procedures without entering a cavern. But, for your next three dives, you're headed into the cavern, staying within the light zone and 40 metres/130 feet total distance from the surface. You learn about
Course Prerequisites:
18-Years Old
PADI Advanced Diver (or equivalency)
Sidemount
This entry level course is designed to teach the student diver all aspects of diving sidemount in an open water environment. Skills will include equipment configuration, gear management, gas management and logistics. Completion of this course will allow the student diver to begin any technical course in the sidemount configuration.
Course Prerequisites:
18-Years Old
PADI Advanced Diver (or equivalency)
EANx Diver Rating
Deep Recreational Dive Experience
Gas Blender Trimix with Oxygen Cleaning
The Gas Blender rating certifies the holder to mix enriched air or trimix for divers to use in recreational or technical diving operations. Courses for this level are conducted by Gas Blender Instructors
Course Prerequisites:
18-Years Old
PADI Advanced Diver (or
equivalency)
EANx Diver Rating
Specialty TecRec Courses

Some TecRec instructors have been authorized by
PADI to offer distinctive specialty courses in
technical diving. These tend to be offered in
areas where the diving environment demands
specialist training. Examples include Cave
Diver, Advanced Wreck Diver and
Technical Rescue Diver.