| At a speed slower than sound (8) |
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| Underwater craft on one sea, it seems, are too low to be perceived (8) |
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| Travelling at less than Mach 1 (8) |
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| Advance payment with offspring in charge is not specially speedy (8) |
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| Replace male offspring in charge but not quite up to speed sound-wise (8) |
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| Bench on one Concorde's left wing? Not so fast |
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| Below the speed of sound (8) |
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| Below the sound barrier (8) |
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| Slower than Mach 1 |
LA Times Daily |
31 Aug 2023 |
| Flying at speeds less than sound |
The Guardian Speedy |
19 Mar 2023 |
| Reserve's virtually shelved, being not the quickest |
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| Such a speed's not shocking, seeing warships nearly stranded in the Antarctic? |
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| Of speed lower than that of sound |
The Guardian Speedy |
04 Dec 2016 |
| Below Mach 1 |
The Telegraph Quick |
17 Aug 2016 |
| Navy vessels almost all kept in readiness, not like the fastest jets |
The Telegraph Toughie |
22 Jul 2015 |
| Not so fast? |
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| Below Mach 1 |
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| Slower than Mach 1 |
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| Not like an SST |
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| At turbo-prop speed |
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