Across
- 1. regulator connector(6)
- 3. annual fee(12)
- 5. timer(5)
- 6. emergency service(4)
- 9. line cutter(5)
- 11. pressure seal(1,4)
- 13. head cover(4)
- 15. dive organiser(4,7)
- 17. flotation device(8,11)
- 20. head space(5)
- 24. equalising method(8)
- 25. burst lung(12)
- 28. marker initials(3)
- 29. breathing tube(7)
- 31. starboard colour(5)
- 33. distress call(6)
- 35. heart hole(3)
- 38. oxygen recycler(10)
- 39. waste gas(6,7)
- 41. powers movement(4)
- 42. boat driver(8)
- 44. thermal protection(7)
- 45. sunken vessel(5)
- 46. heart starter(3)
- 47. gas store(8)
- 48. floating(7)
- 49. teacher(10)
Down
- 2. committee boss(8)
- 4. cylinder pair(7)
- 7. site marker(8)
- 8. raises spidge(10)
- 10. dive partner(5)
- 12. small cylinder(4)
- 14. screw connection(3)
- 16. cousteau invention(8)
- 18. shows direction(7)
- 19. inert gas(8)
- 21. cylinder outlet(6,5)
- 22. governing body(4)
- 23. releases air(4,5)
- 26. data processor(8)
- 27. off gassing(13)
- 30. self baler(9,5)
- 32. port colour(3)
- 34. going down(7)
- 36. suit material(8)
- 37. planing boat(3)
- 40. ear bones(8)
- 43. buddy's backup(7)