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