"CMB 55 ft" type motor torpedo boats (CMB14A) (72, 1917

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"CMB 55 ft" type motor torpedo boats (CMB14A) (72, 1917 - 1922)

Photo

CMB.98ED and CMB.112

Ships

Names	Builders	Completed	Losses	Transfers	Discarding
CMB.14A - 20A CMB.21B - 23B CMB.24A CMB.25BD CMB.26B CMB.27A - 29A CMB.30B CMB.31BD CMB.32A - 37A CMB.38B - 39B CMB.62BD - 64BD CMB.65A CMB.66BD CMB.67A CMB.68B CMB.69A - 72A CMB.73B - 75B CMB.76A - 77A CMB.78E CMB.79A CMB.80C - 82C CMB.83CE CMB.84C - 85C CMB.86BD CMB.87B CMB.88BD - 92BD CMB.93E - 97E CMB.98ED - 99ED CMB.113CK CMB.114D CMB.115DE CMB.116D - 119D CMB.120F	Thornycroft, Hampton: CMB.14A - 18A, 21B, 24A, 25BD, 26B, 27A - 28A, 31BD, 33A - 34A, 36A, 65A, 76A, 78E, 80C, 82C, 83CE, 87B, 93E - 97E, 113CK, 120F Taylor & Bates, Chertsey: CMB.19A, 68B, 73B, 74B, 84C, 86BD, 114D, 115DE Camper & Nicholson, Gosport: CMB.20A, 37A, 39B, 69A - 70A, 72A, 75B, 77A, 79A, 81C, 98ED - 99ED, 118D - 119D Wills & Packham, Stingbourne: CMB.22B, 30B, 63BD - 64BD, 116D - 117D Salters Bros, Oxford: CMB.23B, 62BD, 67A Rowhedge Iron Wks: CMB.29A, 35A, 90BD - 92BD Frank Maynard, Chiswick: CMB.32A, 38B, 66BD, 71A, 85C, 88BD unknown: CMB.89BD	1917: CMB.14A - 18A, 21B 1918: CMB.19A - 20A, 22B - 23B, 24A, 25BD, 26B, 27A - 29A, 30B, 31BD, 32A - 37A, 38B - 39B, 62BD - 64BD, 65A, 66BD, 67A, 68B, 69A - 72A, 73B - 75B, 76A - 77A, 78E, 79A, 80C - 82C, 83CE, 84C, 86BD, 87B, 89BD, 93E - 96E 1919: CMB.85C, 88BD, 90BD - 92BD, 97E, 98ED - 99ED, 113CK, 114D, 115DE, 116D, 117D 1920: CMB.118D - 119D 1922: CMB.120F	CMB.18A (12.4.1918), CMB.24A (18.8.1919), CMB.33A (12.4.1918), CMB.39B (28.4.1918), CMB.62BD (18.8.1919), CMB.67A (18.8.1919), CMB.71A (15.10.1918), CMB.79A (18.8.1919), CMB.99ED (1920), CMB.114D (4/1923) cancelled: CMB.66A, CMB.118D - 119D	none	1920: CMB.26B 1921: CMB.15A, 17A, 25BD, 28A, 34A, 35A, 37A, 63BD, 64BD, 65A, 66BD, 68B, 70A, 72A, 76A, 77A, 78E, 86BD, 88BD 1922: CMB.16A, 27A, 29A, 87B 1923: CMB.14A, 73B, 82C, 90BD 1923-1932: CMB.80C 1924: CMB.19A, 20A, 21B, 22B, 31BD, 32A, 36A, 69A, 74B, 96E 1925: CMB.113CK, 120F 1928: CMB.23B, 30B, 38B, 75B, 89BD, 91BD, 92BD, 93E - 95E, 97E, 98ED 1930: CMB.115DE 1932: CMB.81C, 83CE, 84C, 85C, 116D - 118D, 119D

Names

Builders

Completed

Losses

Transfers

Discarding

CMB.14A - 20A

CMB.21B - 23B

CMB.24A

CMB.25BD

CMB.26B

CMB.27A - 29A

CMB.30B

CMB.31BD

CMB.32A - 37A

CMB.38B - 39B

CMB.62BD - 64BD

CMB.65A

CMB.66BD

CMB.67A

CMB.68B

CMB.69A - 72A

CMB.73B - 75B

CMB.76A - 77A

CMB.78E

CMB.79A

CMB.80C - 82C

CMB.83CE

CMB.84C - 85C

CMB.86BD

CMB.87B

CMB.88BD - 92BD

CMB.93E - 97E

CMB.98ED - 99ED

CMB.113CK

CMB.114D

CMB.115DE

CMB.116D - 119D

CMB.120F

Thornycroft, Hampton: CMB.14A - 18A, 21B, 24A, 25BD, 26B, 27A - 28A, 31BD, 33A - 34A, 36A, 65A, 76A, 78E, 80C, 82C, 83CE, 87B, 93E - 97E, 113CK, 120F

Taylor & Bates, Chertsey: CMB.19A, 68B, 73B, 74B, 84C, 86BD, 114D, 115DE

Camper & Nicholson, Gosport: CMB.20A, 37A, 39B, 69A - 70A, 72A, 75B, 77A, 79A, 81C, 98ED - 99ED, 118D - 119D

Wills & Packham, Stingbourne: CMB.22B, 30B, 63BD - 64BD, 116D - 117D

Salters Bros, Oxford: CMB.23B, 62BD, 67A

Rowhedge Iron Wks: CMB.29A, 35A, 90BD - 92BD

Frank Maynard, Chiswick: CMB.32A, 38B, 66BD, 71A, 85C, 88BD

unknown: CMB.89BD

1917: CMB.14A - 18A, 21B

1918: CMB.19A - 20A, 22B - 23B, 24A, 25BD, 26B, 27A - 29A, 30B, 31BD, 32A - 37A, 38B - 39B, 62BD - 64BD, 65A, 66BD, 67A, 68B, 69A - 72A, 73B - 75B, 76A - 77A, 78E, 79A, 80C - 82C, 83CE, 84C, 86BD, 87B, 89BD, 93E - 96E

1919: CMB.85C, 88BD, 90BD - 92BD, 97E, 98ED - 99ED, 113CK, 114D, 115DE, 116D, 117D

1920: CMB.118D - 119D

1922: CMB.120F

CMB.18A (12.4.1918), CMB.24A (18.8.1919), CMB.33A (12.4.1918), CMB.39B (28.4.1918), CMB.62BD (18.8.1919), CMB.67A (18.8.1919), CMB.71A (15.10.1918), CMB.79A (18.8.1919), CMB.99ED (1920), CMB.114D (4/1923)

cancelled: CMB.66A, CMB.118D - 119D

none

1920: CMB.26B

1921: CMB.15A, 17A, 25BD, 28A, 34A, 35A, 37A, 63BD, 64BD, 65A, 66BD, 68B, 70A, 72A, 76A, 77A, 78E, 86BD, 88BD

1922: CMB.16A, 27A, 29A, 87B

1923: CMB.14A, 73B, 82C, 90BD

1923-1932: CMB.80C

1924: CMB.19A, 20A, 21B, 22B, 31BD, 32A, 36A, 69A, 74B, 96E

1925: CMB.113CK, 120F

1928: CMB.23B, 30B, 38B, 75B, 89BD, 91BD, 92BD, 93E - 95E, 97E, 98ED

1930: CMB.115DE

1932: CMB.81C, 83CE, 84C, 85C, 116D - 118D, 119D

Technical data

Displacement normal, t	11
Displacement full, t
Length, m	18.3
Breadth, m	3.36
Draught, m	0.92
No of shafts	2
Machinery	CMB.14A - 20A, 24A, 27A - 29A, 32A - 37A, 65A - 67A, 69A - 72A, 76A, 77A, 79A: 2Thornycroft V-12 petrol engines CMB.21B - 23B, 26B, 30B, 38B - 39B, 68B, 73B - 75B, 86B, 87B: 2 Green 12 petrol engines CMB.25BD, 31BD, 62BD - 64BD, 86BD, 88BD - 92BD: 2 Green 12 petrol engines CMB.78E, 93E - 97E: 2 Thornycroft Y-12 petrol engines CMB.80C - 82C, 83CE, 84C, 85C, 113CK: 2 Sunbeam petrol engines CMB.114D, 115DE, 116D - 119D: 2 Green 18 petrol engines CMB.120F: 2 petrol engines
Power, h. p.	CMB.14A - 17A, 19A, 20A, 25BD, 27A - 29A, 31BD, 32A - 37A, 62BD - 64BD, 65A, 66A, 69A - 72A, 76A, 77A, 88BD - 92BD: 500 CMB.21B - 23B, 26B, 30B, 38B, 68B, 73B - 75B, 86B, 87B: 550 CMB.78E, 93E - 97E: 700 CMB.80C - 82C, 84C, 85C, 114D, 115DE, 116D - 119D: 900 CMB.83CE:? CMB.113CK:? CMB.120F:?
Max speed, kts	CMB.14A - 17A, 19A, 20A, 27A - 29A, 32A - 37A, 65A, 66A, 69A - 72A, 76A, 77A: 35.3 CMB.21B - 23B, 26B, 30B, 38B, 68B, 73B - 75B, 86B, 87B: 37.1 CMB.25BD, 31BD, 62BD - 64BD, 88BD - 92BD: 35.1 CMB.78E, 93E - 97E: 41 CMB.80C - 82C, 84C, 85C: 41.2 CMB.83CE:? CMB.113CK:? CMB.114D, 116D - 119D: 40 CMB.115DE: 40.7 CMB.120F:?
Fuel, t	petrol
Endurance, nm(kts)
Armament	CMB.14A - 20A, 21B - 23B, 24A, 26B, 27A - 29A, 30B, 32A - 37A, 38B, 39B, 65A - 67A, 68B, 69A - 72A, 73B - 75B, 76A, 77A, 78E, 79A, 80C - 82C, 84C, 85C, 86B, 87B, 93E - 97E, 114D, 116D - 119D, 120F: 2 x 2 - 7.7/94, 1 - 450 TT (stern), 1 DCR (4) CMB.25BD, 31BD, 62BD - 64BD, 83CE, 88BD - 92BD, 98ED, 99ED, 113CK, 115DE: 2 x 2 - 7.7/94, 2 - 450 TT (stern), 1 DCR (4)
Complement	3 - 5

Graphics

CMB.98ED and CMB.112

Project history

Enlarged versions of the 40-footers were ordered in mid-1916. They were generally similar, but to identify the wide variety of engine types used they were given additional suffixes.

Modernizations

None

Naval service

12 boats were sent in January, 1919 to Caspian sea. All were abandoned then and captured by White or Red Russian forces.

CMB.112