Part 2 containing photographs of scientific naval technology and components. 1) Photograph...

Part 2 containing photographs of scientific naval technology and components.

1) Photograph of original letter from Lord Fisher to Prof H Bragg dated 9 June 1917. Size 26cm x 20cm.

2) 'Workshop, Parkeston Quay 1917-1919'. Size 12cm x 16cm.

3) 'AC relay PQ 1917 front view'. Size 17cm x 12cm.

4) 'AC relay PQ 1917 side view'. Size 12cm x 17cm.

5) Close up of AC relay. Size 12cm x 17cm.

6) 'Vibration Interupter (for acoustic mine) Parkeston Quay 1917-1918'. Size 9cm x 15cm.

7) 'AES workshop Parkeston Quay 1917-1919'. Size 12cm x 16cm.

8) 'Submarine Signalling Co's (non direct) hydrophone'. Size 12cm x 15cm.

9) 'Submarine Signalling Co's (non direct) hydrophone'. Size 12cm x 15cm.

10) 'Vibration Interupter (for acoustic mines) Parkeston Quay 1917-1918'. Size 8cm x 10cm.

11) 'Lancashire Fish'. Size 8cm x 13cm.

12) 'Chattery Contact and ACM 'back contact'. Parkeston Quay 1917-1918'. 7cm x 10cm.

13) 'Anti countering device. Parkeston Quay 1917-1918'. Size 8cm x 11cm.

14) 'Stream-line dome'. Size 13cm x 17cm.

15) 'Framework for streamline dome'. Size 13cm x 17cm.

16) 'Chattery contact and synchronous rectifier for acoustic mines. Parkeston Quay 1917-1918'. Size 9cm x 15cm.

17) 'Chattery contact and synchronous rectifier for acoustic mines. Parkeston Quay 1917-1918'. Size 9cm x 15cm.

18) 'Aberdour'. Size 6cm x 8cm.

19) 'Hawkcraig'. Size 6cm x 8cm.

20) 'Inchcolm'. Size 6cm x 8cm.

21) 'Inchcolm from Hawkcraig'. Size 6cm x 8cm.

22) 'Otterston Loch, Aberdour'. Size 6cm x 8cm.

23) 'Aberdour'. Size 6cm x 8cm.

24) 'Aberdour (Inchcolm)'. Size 6cm x 8cm.

25) 'Magnet Electric Machines at S Fareland lighthouse (near St Margarets Bay)'. Size 9cm x 11cm.

26) 'AC relay - an vibration interpreter principle'. Size 9cm x 12cm.

27) 'Aberdour'. Size 6cm x 8cm.

28) 'Hawkcraig'. Size 6cm x 8cm.

29) 'Aberdour'. Size 6cm x 8cm.

30) 'Otterston Loch, Aberdour'. Size 6cm x 8cm.

31) 'Unidirectional Hydrophone'. Size 21cm x 14cm.

32) Hydrophone. Size 21cm x 16cm.

33) Hydrophone. Size 21cm x 16cm.

34) Hydrophone. Size 21cm x 16cm.

35) Hydrophone. Size 21cm x 16cm.

36) Hydrophone. Size 21cm x 16cm.

37) Hydrophone. Size 21cm x 16cm.

38) Hydrophone. Size 21cm x 16cm.

39) Underside of vessel. Size 15cm x 21cm.

40) Underside of vessel. Size 15cm x 21cm.

41) Group of five men next to water. Two in navel attire. Size 14cm x 20cm.

42) Group of five men next to water. Two in navel attire. Size 14cm x 20cm.

43) Photograph of illustrated diagram showing materials used in a construction. Size 20cm x 14cm.

44) Photograph of illustrated diagram showing materials used in a construction. 17cm x 12cm.

45) Photograph of illustrated diagram showing materials used in a construction. Size 20cm x 14cm.

46) 'Shandon'. Size 15cm x 22cm.

47) 'Miscellaneous Hydrophones'. Size 17cm x 22cm.

48) '3 submarines moored in harbour'. Size 9cm x 14cm.

49) 'AES Shandon 1919-1921' showing group of 48 figures. Size 16cm x 21cm.

50) 'AES Shandon 1919-1921' showing group of 48 figures. Size 16cm x 21cm.

51) 'Photograph taken at Toulon in May 1918 group of 5 figures, 2 in Navel attire'. Size 14cm x 20cm.

52) 'Workshop staff AES Parkeston Quay Harwich 1918'. Size 17cm x 21cm.

53) 'Workshop staff AES Parkeston Quay Harwich 1918'. Size 17cm x 21cm.

54) 'Workshop staff AES Parkeston Quay Harwich 1918'. Size 17cm x 21cm.

55) 'Easton Broad Sound Ranging Station 1921'. Size 10cm x 8cm.

56) 'Sound-ranging recording equipment, Easton Broad (Southwold Suffolk) during 1914-1918 war)'. Size 9cm x 12cm.

57) Depth guage fitted. Size 12cm x 11cm.

58) Depth guage fitted. Size 12cm x 11cm.

59) Depth guage not fitted. Size 8cm x 12cm.

60) Depth guage not fitted. Size 8cm x 12cm.

61) 'Dr Drysdale's Impulse generator and auxiliary gear for EDS'. Size 11cm x 13cm.

62) 'Dr Drysdale's Impulse generator in pieces'. Size 11cm x 13cm.

63) 'Depth-sounding bomb 1916'. Size 8cm x 10cm.

64) 'Unidirectional hydrophone'. Size 16cm x 12cm.

65) 'The Fessenden Oscillator'. Size 7cm x 9cm.

66) ''Drifter Set'. Non-directional hydrophone (about 8ins diameter). Cdr Ryans design Hawkcraig, Aderdour 1916'. Size 16cm x 10cm.

67) 'Cathode Ray Oscillograph and necessary apparatus. Shandon 1919-20'. Size 16cm x 10cm.

68) 'Lancashire Fish 1919'. Size 10cm x 16cm.

69) Underside of vessel. Size 12cm x 16cm.

70) '5'' dia Tourmaline explosion pressure gaug for use with CRO'. Size 17cm x 12cm.

71) 'Trigger valve relay at St Margaretts Bay'. Size 8cm x 12cm.

72) 'A 300lb Amatol charge fired 5 feet below the surface'. Size 8cm x 2cm.

73) 'A 300lb Amatol charge fired 5 feet below the surface'. Size 8cm x 2cm.

74) 'Rise of spray dome due to an underwater explosion'. Size 9cm x 7cm.

75) 'HT cut out switch'.12cm x 8cm.

76) 'Dome or first upneavel (caused by pressure wave reaching the surface) of 1,900lb Amatol charge, shown at it's full height'. Size 6cm x 8cm.

77) 'Dome or first upheavel (caused by pressure wave reaching the surface) of 1,900lb Amatol charge, shown at it's full height'. Size 6cm x 8cm.

78) 'Vibration Integrator'. Size 12cm x 16cm.

79) 'Vibration Integrator'. Size 12cm x 16cm.

80) 'Dr Drysdale's Impulse generator and auxilary gear for EDS'. Size 11cm x 13cm.

81) 'Dr Drysdale's Impulse generator in pieces'. Size 11cm x 13cm.

82) Electric Clock Pendulum Type mains driver. Size 16cm x 12cm.

83) Impulse generator. Size 12cm x 16cm.

84) Impulse generator in use. Size 12cm x 16cm.

85) 'HT cut-out switch'. Size 14cm x 10cm.

86) 'Hydrophone'. Size 12cm x 17cm.

87) 'Hydrophone'. Size 12cm x 17cm.

Plus 30 other unknown photographs.