The Meg15 CCR
The Meg 15 may be integrated with several types of electronic systems, scrubber sizes and types, gas supply cylinders, harness and BC assemblies. The ISC Megalodon 15 CCR or more fondly called "The Meg 15" is a CCR system that has been embraced by divers of all skill levels around the world. With its versatility of design, it can be configured to meet any level of diving and keep pace with the 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 are 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.
Customize and see all options for the Meg 15
Download the Meg 15 Pre-Dive Check List
Step 1: choose your unit type
Standard
- Radial 8.0
- Radial 5.5
Cave
- Radial 5.5
Mini
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.
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)



The Shearwater NERD (Near Eye Remote Display) is the first technical dive computer with a display mounted on the diver's rebreather mouthpiece. This revolutionary device keeps crucial information in your line-of-sight for the entire dive. Thanks to the Micro LCD display and magnifying lens, the data appears as if displayed on a 32" TV screen 12' away, with no need to focus.
Learn More about the NERD

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:
- Aluminum ILSPEC Hardcoat Black Anodized
- 11GA SS Backplate (8.4 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