NAVYPEDIA

Ships

Names	Builders	Completed	Losses	Transfers	Discarding
CMB.100M - 101M CMB.102MT - 104MT CMB.105 - 111	Thornycroft, Hampton: CMB.100M, 102MT Thornycroft, Woolston / Portsmouth DYd: CMB.101M Camper & Nicholson, Gosport: CMB.103MT, CMB104MT	1919: CMB.100M, 101M, 102MT 1920: CMB.103MT, 104MT 1942: CMB.103MT (2nd time)	cancelled: CMB.105 - 111	None	1920: CMB.101M 1921: CMB.100M 1923: CMB.102MT 1928: CMB.103MT 1944: CMB.103MT (2nd time), CMB.104MT

Technical data

Displacement normal, t	24
Displacement full, t
Length, m	22.1
Breadth, m	4.27
Draught, m	1.07
No of shafts	2
Machinery	CMB.100M, 101M: 2 Thornycroft Y-12 petrol engines CMB.102MT - 104MT: 2 Thornycroft Y-24 petrol engines
Power, h. p.	CMB.100M, 101M: 700 CMB.102MT - 104MT: 1400
Max speed, kts	CMB.100M, 101M: 26 CMB.102MT - 104MT: 36.6
Fuel, t	petrol
Endurance, nm(kts)
Armament	3 x 2 - 7.7/94, 1 DCR (4), 7 mines or 3 -450 TT
Complement	3 - 5

Standard scale images

Project history

Twelve minelaying CMBs were ordered in January 1918, capable of laying seven 'M Sinker' magnetic mines, or an alternative load of six torpedoes, but five were cancelled, CMB.105-111. Post-war there were a number of experimental hulls, probably part of this programme, but completed by the builders for trials work. MB.1265 was reported to have been towed from Woolston to Pembroke DYd for completion and MB.1535, building at Hampton, had triple 450MM torpedo-troughs, 3 twin Lewis MGs and DCs, and was driven by a 24-cylinder Green engine.

Modernizations

None

Naval service

CMB.102MT became depot ship Hornet in 1923 and survived the Second World War, with CMB.103MT and 104MT, but the other two were deleted in 1920-21.