The Megalodon CCR
The Meg may be integrated with several types of electronic systems, scrubber sizes and types, gas supply cylinders, harness and BC assemblies. There are 21 versions of the Meg to support customer needs. The Meg is being used as a side mounted system for penetration into extreme enclosed spaces and doubled up as a twin system for CCR redundancy for extreme deep diving operations where carrying open circuit bailout is impractical.The ISC Megalodon CCR or more fondly called “The Meg” is a CCR system that has been embraced by divers of all skill levels around the world. Meg divers dive from 60fsw to over 742 fsw/225 msw. With its versatility of design, it can be configured to meet any level of diving and keep pace with the “Meg divers” skill levels.
Fundamentally the Meg was designed for the most demanding dives with consideration for the diver and their needs. Addressing not only the basic requirements of performance that a true 3rd party tested CCR must undergo, but also the other considerations that is not considered, such as travel concerns and conducting repairs in remote locations.
The design of the Meg meets fundamental design requirements established by the creator Leon Scamahorn, Founder and CEO of InnerSpace Systems Corp, in the USA. InnerSpace Systems is an ISO 9001:2008 registered company and the only one like it in the USA at this time. ISC is a custom CCR manufacturing company that designs systems to meet customer requirements.
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Step 1: choose your unit type
Standard
- Radial 8.0
- Radial 5.5
- 6.0 Axial
Cave
- Radial 5.5
- 6.0 Axial
Mini
CE
Cylinder Mounts
Step 2: choose your cylinder mounts
The Shadow mount is an extremely low profile cylinder mounting and accessories fixture that allows cylinders to “hug” the primary breathing system. It also allows for cylinders or accessories to be quickly and repeatability remounted in its desired configuration. Shadow mounts may be welded to the Megalodon CCR gas plenum canister or fixed by compression clamps.
Shadow Welded | Non Welded Options |
Shadow mounts may be welded to the Megalodon CCR. This option provides for a permanent solution for mounting cylinders to your canister. | The non-welded option for shadow mounts is to have them attached with a compression clamp (aka worm drive clamp). This allows versitility if needed. |
Cylinder Options
Step 3: choose your cylinder
All cylinders are DOT Approved (North America) - the following cylinder sizes are avilable. For complete specs, click learn more.
Scrubbers
Step 4: choose your scrubber
Electronic Options
Step 5: choose your electronics
(click to open)


Learn More

Pressure gauges are color coded: Black for diluent, and green for Oxygen. Gauges are made by Apeks, and are available in your choice of Imperial or in BAR.
Backplates
Step 8: choose your backplate
The Megalodon CCR can be placed on any standard diving backplate. ISC offers several designs and options for our own in house manufactured backplates:
- Anodized Aluminum
- Aluminum ILSPEC Hardcoat Black Anodized
- Travel Plate (3.1 Lbs)
- SS Backplate (5.5 Lbs)
- 1/4" Thick SS Backplate (10.5 Lbs)
Harness'
Step 9: choose your harness
Offered options for our harness systems include:
- Continuous webbing (Hogarthian)
- Deluxe Adjustable QR plastic buckles
- "Old School" Adjustable Harness (non-QR)
- The ISC Vest System
Download Documents for the Meg Classic
- Meg Classic / APECS 2.7 User Manual - PDF Document
- Meg Classic / APECS 2.7 Calibration Manual - PDF Document
- Meg Classic / APECS 2.7 Pre/Post Dive Checklist - PDF Document