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Hypothermia and thermal stress in diving

This short eBook explains what hypothermia and thermal stress means. And how to avoid them when diving.

Table of contents

  • What is hypothermia?
  • What are the signs of hypothermia?
  • What are the stages of hypothermia?
  • How your body loses heat?
  • What are the risk factors of hypothermia ?
  • What water temperature gives you hypothermia?
  • How can you prevent hypothermia?
  • Decompression and thermal stress.

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    cave diving underwater scuba divers exploring caves ocean scenery sun beams and rays background

    Bora XHP-50.2 technical dive light

     

    The XLamp XHP50.2 LED is the next generation of Extreme High Power LEDs that delivers the lowest system cost through the best lumen density, reliability and color consistency. Built on Cree’s latest high-power LED technology, the XHP50.2 LED improves the lumen density, voltage characteristics, reliability and optical performance of the XHP50 LED in the same 5.0 mm x 5.0 mm footprint. The new XHP50.2 LED provides an easy drop-in upgrade to achieve higher system LPW for lighting manufacturers with existing XHP50 designs, eliminating redesign costs. Its unparalleled lumen density and longer lifetime at higher operating temperatures also enables new and innovative lighting designs at lower system costs.

          • Max. power 18 W
          • Max. light output 1955 lm
          • Color temperature 5000 K
          • High quality TIR optics
          • FWHM 4,9°

      • Aerospace grade anodized aluminium light head that optimizes head dissipation and protecting LED electronics and optics
      • Constant current LED driver
          • 3 modes
            • 25% pwm (~34 hour)
            • 50% pwm (~17 hour)
            • 100% pwm (~8.5 hour)
      • Piezo switch
          • Solid stainless steel body
          • Sealed to IP69K
          • Easy to clean metal surface
          • Long life (million cycles)

      • Adjustable laser cutted stainless steel goodman handle
      • Nickel plated IP69K rated brass cable glands

      • Aerospace grade anodized solid aluminium canister body and lid
      • 11,1 V 14000 mAh Li-ion battery pack with integrated BMS system
      • Dual o-ring protection
      • Gold plated banana plugs
      • Stainless steel Nielsen latch

      • Sealed battery compartment with pressure release valve

      • Every light is tested at 20 bar (~200 meter) for 60 minutes

      • Dimensions
          • Canister d80x240mm
          • Light head d56x90mm
          • Weight ~3.2 kg
      • With drysuit heating port

     

    cave diving underwater scuba divers exploring caves ocean scenery sun beams and rays background

    Bora XM-L2 technical dive light

     

    Delivering breakthrough lumen output and efficacy in the XM package, the XLamp® XM-L2 LED is the highest-performing, commercially-available, single-die LED. Built on the SC³ Technology Platform, the Xlamp XM-L2 LED delivers up to 20% more lumens and lumens-per-watt and double the lumens-per-dollar of the original XM-L. The XM-L2 LED offers the unique combination of high efficacy and high lumen output at high drive currents.

          • Max. power 10 W
          • Max. light output 1198 lm
          • Color temperature 6500 K
          • High quality TIR optics
          • FWHM 4,9°

      • Aerospace grade anodized aluminium light head that optimizes head dissipation and protecting LED electronics and optics
      • Constant current LED driver
          • 3 modes
            • 25% pwm (~62 hour)
            • 50% pwm (~31 hour)
            • 100% pwm (~15.5 hour)
      • Piezo switch
          • Solid stainless steel body
          • Sealed to IP69K
          • Easy to clean metal surface
          • Long life (million cycles)

      • Adjustable laser cutted stainless steel goodman handle
      • Nickel plated IP69K rated brass cable glands

      • Aerospace grade anodized solid aluminium canister body and lid
      • 11,1 V 14000 mAh Li-ion battery pack with integrated BMS system
      • Dual o-ring protection
      • Gold plated banana plugs
      • Stainless steel Nielsen latch

      • Sealed battery compartment with pressure release valve

      • Every light is tested at 20 bar (~200 meter) for 60 minutes

      • Dimensions
          • Canister d80x240mm
          • Light head d56x90mm
          • Weight ~3.2 kg
      • With drysuit heating port

    Mistral XM-L2 optical performance