Technical information
| Type | Motor Torpedo Boat |
| Displacement | 32/40 BRT |
| Length | 70 feet |
| Complement | 10/12 men |
| Armament | (MTB 20/23 and 29/30)
4 .5"AA (2x2) MTB 31/40 2 .5"AA (1x2) 4 .303"AA (2x2) 2 21" torpedo tubes MTB 57/66 See MTB 31/40, but with 1 20mm AA or 4 .303"AA (1x4) additional MTB 69/70 and 218/221 4.303"AA (1x2, 2x1) 2 21" torpedo tubes |
| Max speed | 33 knots |
| Engines | Petrol engines, 2 or 3 shafts (see notes) |
| Power | 900 to 3450 HP (see notes) |
| Notes on class | MTB 20/23, 29/30 and 31/34 Petrol engines, 3 shafts, 3450HP, 42 knots MTB 35/40, 57/66 and 218/221 Petrol engines, 3 shafts, 900HP, 25 knots MTB 69/70 Petrol engines, 2 shafts, 2300P, 27,5 knots |
All ships of the Vosper 70 feet-type class
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| HMS MTB 20 (MTB 20) | ||
| HMS MTB 21 (MTB 21) | ||
| HMS MTB 22 (MTB 22) | ||
| HMS MTB 23 (MTB 23) | ||
| HMS MTB 29 (MTB 29) | Lost on 6 Oct 1942 | |
| HMS MTB 30 (MTB 30) | Lost on 18 Dec 1942 | |
| HMS MTB 31 (MTB 31) | ||
| HMS MTB 32 (MTB 32) | ||
| HMS MTB 33 (MTB 33) | ||
| HMS MTB 34 (MTB 34) | ||
| HMS MTB 35 (MTB 35) | ||
| HMS MTB 36 (MTB 36) | ||
| HMS MTB 37 (MTB 37) | ||
| HMS MTB 38 (MTB 38) | ||
| HMS MTB 39 (MTB 39) | ||
| HMS MTB 40 (MTB 40) | ||
| HMS MTB 57 (MTB 57) | ||
| HMS MTB 58 (MTB 58) | ||
| HMS MTB 59 (MTB 59) | ||
| HMS MTB 60 (MTB 60) | ||
| HMS MTB 61 (MTB 61) | Lost on 9 May 1943 | |
| HMS MTB 62 (MTB 62) | ||
| HMS MTB 63 (MTB 63) | Lost on 2 Apr 1943 | |
| HMS MTB 64 (MTB 64) | Lost on 2 Apr 1943 | |
| HMS MTB 65 (MTB 65) | ||
| HMS MTB 66 (MTB 66) | ||
| HMS MTB 69 (MTB 69) | ||
| HMS MTB 70 (MTB 70) | ||
| HMS MTB 218 (MTB 218) | Lost on 18 Aug 1942 | |
| HMS MTB 219 (MTB 219) | ||
| HMS MTB 220 (MTB 220) | Lost on 13 May 1942 | |
| HMS MTB 221 (MTB 221) | ||
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Royal Navy (more on See all Motor Torpedo Boat classes.
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Books dealing with this subject include:
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