A Social Studies 11 presentation outlining tactics and technology.

1. The Battle of the Atlantic MARSHALL, 2006 Britain’s Lifeline Must Not Be Severed

2. Royal Navy: Greatest Navy in the World?

3. Destroyers for Bases

4. Britain needed to secure a supply line - Hitler tried to choke off that line…

5. Naval Race Revisited?

6. Can you remember who Bismarck was? Think 1870.

9. Battle of Denmark Straits: HOOD was sunk with one shot - only a couple of men survived.

10. Revenge for the HOOD!

11. The Threat

14. The Effect

17. Counter-measures: Detection

19. Tough Decisions Must be Made

20. Leigh Light

21. ASDIC = Canadian/British SONAR System Anti- Submarine Detection Investigation Committee

22. As well as Corvettes and destroyers, minesweepers were crucial to detect dangers above and below the surface.

23. ENIGMA/ULTRA

27. Hedgehog Anti-submarine (A/S) Mortar

28. Not only submarines used torpedoes : ships and plane were also used as launch platforms.

32. Counter- measures: The CONVOY

33. THE MAP ROOM: ATLANTIC THEATRE

36. CORVETTES

38. BUT…

40. The no-rescue rule was not always followed… Canadian Destroyer

41. The Results: some statistics

42. Bringing the might of the USA economy to bear…

43. Ships lost: by theatre

44. Production by USA