The Megalodon MK15 Closed Circuit Rebreather System

Leon Scamahorn, CEO of Innerspace Systems Corp., Discussing the Unit in Houston

The MK15 Rebreather combines ISC’s robust Megalodon frame and breathing loop with its low work of breathing with IScanApecs4 Electronics making the MK15 one of the world’s best rebreathers. Using ISC’s DiveCan bus, the custom designed APECS 4 controller independently controls the oxygen side and the decompression side of diving.

Some Features of the Mark 15 CCR

  • Very customizable modular rebreather
  • Proven ruggedness with over 20 years of manufacturing
  • US Navy approved look and framework
  • Mixed Gas capable
  • 5.5lb Radial Scrubber (8lb Radial additional)
  • Plug & Play displays and devices making it ideal for upgrades or repairs
  • eCCR configuration with IscanApecs4 color handset, HUD (NERD 2 can be added)
  • Counter lung system designed for water trapping, water expulsion and easy work of breathing.
  • Integrated water traps
  • ISC Exclusive dual partitioned breathing loop protects the diver from caustic cocktails.
  • Aluminum canister with black mil-spec hard coat anodizing (your choice of canister size)
  • Any brand backplate/harness/ wing system will fit on the unit.
  • Shadow mounts on canister allow the mounting of any cylinder size 15cf / 2L or 23cf / 3L Fabers.
  • Will easily fit in the overhead of an airplane during travel!

Features of the ISCan Apecs 4 CCR Electronics

The ISC Advanced Personal Environmental Controller System 4 (APECS 4™) is a family of CCR electronics designed to be used in a variety of diving roles to fit the operational needs of the end user. The APECS 4™ family is designed to be used in saturation, military, commercial and recreational roles providing reliable, user-friendly operation.

Menu and Action/Confirm system and essential information dive screen that minimizes the task loading of the diver by providing a “quick look” ability of essential information and the ability to quickly change on the fly operational characteristics. APECS 4™ is the latest general release of the software and hardware and consolidates the tested features of APECS 2.5 into APECS 4™, a common core with unique configurations to simplify software and hardware maintenance. APECS 4™ is also designed to accommodate the Shearwater DiveCAN system, which facilitates integration of third party decompression computers or CAN based components onto the ISC breathing loop.

  • Full decompression system for multi-stage mixed gas decompression diving.
  • 3000MAH rechargeable battery which eliminates more specialized replacement batteries. The system can stay nearly fully charged up to a year and operate the handset over 24 hours of continius dive time.
  • Quickly recharged using micro USB/USB wall plug or PC
  • Two independent and powered network systems for redundancy.
  • Depth, time and 3 oxygen sensor display.
  • 3 sensor voting logic and Voting failed consensus solenoid deactivation.
  • Voting failed decompression default. Decompression is calculated by lowest PO2 displayed by one of 3 sensors.
  • Independently powered oxygen injection system. Will run independently of handset controller. Power supply is one or two 9V batteries.
  • TFT brilliant full color display providing the highest contrast, sharpness and brightness while not requiring bcklighting. It is viewable from almost any angle. Low power consumption, large font and colored alarm indicators.
  • WI-FI capable system which can communicate over the internet for configuration and downloading dive logs as well as uploading system upgrades.
  • Integrated compass sowing all 4 points of the compass rose for easy positional orientation with concurrent PO2 display
  • Independent isolated display system with pressure/gas and water-resistant cabling.
  • Leak proof soft touch activation buttons.
  • Two button self-intutive menu navigation and action/confirm system with 10 standard selectable menu options
  • Full mixed gas capable
  • No system lockouts
  • Handset can independently power main network for back-up to main system power supply
  • System is independent of other network devices for true independent system monitoring
  • ISC User replaceable modular electronic circuit component system.
  • Automatic altitude calibration and fixed sea level 1013mb pressure option.
  • Buhlman ZHL-16C with adjustable Gradient factors.
  • Any air, nitrogen, and helium mix may be used.
  • Full mixed gas bailout system.
  • 5 CCR diluent gas selectable with override.
  • O/C bailout 5 gas selectable with override.
  • CCR dive planning feature.
  • O/C bailout planning feature.
  • Tilt compensated integrated compass in Handset with user calibration.
  • Dive physiology data for CNS%.
  • Last stop selection.
  • Ascent rate indicator.
  • Imperial and metric measurement option.
  • Automatic off after 15 minutes on the surface.
  • Depth sensor rating for 450fsw(140msw).
  • Advanced Menu option for that adapts to diving status.
  • No computer lockout for violations.
  • Automatic configurable set point switching.
  • User configurable set point low and high settings.
  • Future device upgrade options.
Eric with Bruce Partridge, CEO of Shearwater Electronics
CCR Divers in Grand Cayman
Christa Landowski On a Pathfiner Rebreather

Innerspace Systems Corporation has manufactured a rebreather that fits in both today’s diving environment and tomorrows. If you would like to explore the Tiburon further, send us an email or call and we would be glad to visit with you about becoming a Megalodon CCR Diver!

Interested in becoming a Megalodon diver?

With years of experience in CCR diving the staff at Oceanic Ventures can help you become a Discovery Channel diver and learn to stay underwater longer, go deeper and take unreal photographs. To get started, just call or email Dive Mom to set-up an appointment to see what it takes and what you will need.