Freeflow 26

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Across
  1. 1. Distance a diver can see underwater
  2. 3. Instrument showing cylinder pressure
  3. 6. Ability to float or remain neutrally balanced
  4. 8. Alternate air source regulator
  5. 9. Surface breathing tube
  6. 11. Delayed surface marker buoy abbreviation
  7. 12. Device that reduces breathing gas pressure
  8. 13. Buoyancy compensator abbreviation
  9. 16. Marine mammal often encountered by divers
  10. 19. Used for planning repetitive dives
  11. 20. Moving water affecting divers
  12. 21. Carries ballast for buoyancy control
  13. 24. Underwater rocky or coral structure
  14. 25. Nitrogen-related impairment at depth
  15. 26. Worn on feet to aid propulsion
  16. 29. Time spent out of water between dives
  17. 31. Large underwater seaweed
  18. 32. Stores compressed breathing gas
  19. 33. Larger line device used underwater
  20. 36. Navigation instrument
  21. 38. Neoprene suit that traps water for insulation
  22. 45. Inland dive site often used for training
  23. 46. Line used to descend to wrecks
  24. 47. Period of minimal tidal movement
  25. 48. Traditional unit of water depth
Down
  1. 2. Sudden underwater temperature change
  2. 4. Sunken ship or structure
  3. 5. Dangerous loss of body heat
  4. 7. Common crustacean seen on UK dives
  5. 10. Environment in which divers operate
  6. 11. Waterproof thermal diving suit
  7. 14. Controls gas flow from cylinder
  8. 15. Movement downward underwater
  9. 17. Controlled off-gassing process
  10. 18. Emergency gas sharing procedure
  11. 22. Diving partner
  12. 23. Diver body position underwater
  13. 27. Allows divers to see clearly underwater
  14. 28. Electronic dive planning device
  15. 29. Compact line reel for DSMBs
  16. 30. Movement toward the surface
  17. 34. Technique to balance ear pressure
  18. 35. Shortened term for decompression
  19. 37. Top of the water
  20. 39. Assistance to a diver in difficulty
  21. 40. Colourful soft-bodied sea slug
  22. 41. Type of cylinder pressure test
  23. 42. Protected marine species found in UK waters
  24. 43. Small seal preventing gas leaks
  25. 44. Oxygen-enriched breathing gas