Night diving

Under night dive or night dive (short NTG ) refers to scuba diving at night. On the night mostly other or more creatures are active under water. In light of the dive light corals reveal a different colors than in daylight. Because of the darkness other rules of conduct are necessary as in daylight. It will put higher demands on the diver. In waters with very poor visibility, one is often even during the day it required to use the techniques of night diving.

Equipment

The most important piece of equipment for night diving is the dive light. It is a water-tight and pressure-proof flashlight. Usually, a LED or halogen lamp is employed. LED lights are very bright in proportion to their size and have a longer burning time than halogen lamps. LED lamps are but getting used to, as they give a very white light. Contrast, halogen lamps have a pleasant slightly yellowish appearance, in the very good, the colors come into play under water.

To mark the entry and exit point, it is useful to apply a more waterproof lamp as close to the water surface on the shore or on the dive boat. This shall include a light stick or a UV flash can be used.

Code of Conduct

The following rules are recommended for a night dive:

Planning the night dive

  • Only select locations that are well known by carried out by day dives.
  • Not planning as decompression or deep dives.
  • Dive only in good weather.
  • Do not immerse in high waves.
  • No drift diving.
  • No beginners take.

Preliminary

  • Always form buddy groups. Never dive alone.
  • No form groups with more than three divers, otherwise staying together is difficult.
  • Night diving newbies always divided with a night dive extended into the buddy groups.
  • Before the dive, be agreed with the dive light signaled underwater characters.
  • Each group has its own backup lamp.

Implementation of the night dive

  • Choose a safe entry and exit point.
  • Mark entry and exit point with a light.
  • The light of the lamp limits the dive time.
  • Make sure that no one is displayed with its own lamp.
  • Spotlight creatures under water directly, so as not to interfere unnecessarily.
  • At the water surface is not waving the lamp or around lights, as this can be interpreted as a distress signal.
Buddy diving
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