DBWI the Germans not able to use the Channel tunnel to invade Britain

Supposing the Germans were not able to use the undefended Channel tunnel to invade Britain? Given British air and naval superiority would they have some other chance otherwise?
 
Just make the Germans unable to build the Chunnel -- the "Vril Drill" doesn't work, or they hit a rock fault and it floods, or the French Resistance finds out and sabotages it, etc.
 
Supposing the Germans were not able to use the undefended Channel tunnel to invade Britain? Given British air and naval superiority would they have some other chance otherwise?

you mean how they wasted a bit over 1000 men on an idiotic idea the Germans lasted about ten mintutes before the Tuneel got blown? We've been over this there is no invsion of Brtian ever. Period. Dot.
 
Some of the difficulties involved in pre-1940 undersea tunnel building:
https://en.wikipedia.org/wiki/Severn_Tunnel

The Severn Tunnel is 3.7km and took 13 years, need another 10 times that for the Channel. The Queensway Tunnel was 3.24km between Liverpool and Birkenhead took 9 years from 1925-34, 50 years after the Severn Tunnel so progress is not much faster. If France and UK cooperated its still 50 years of digging.
 

Tovarich

Banned
If Stanley Baldwin's government hadn't been obsessed with privatising public works & competitive tendering, that tunnel would never have been constructed by German engineering firms in the first place, and intentionally constructed too tough to 'blow'.

Indeed, if British builders had gotten the job then it would have collapsed with minimal effort required, if any at all, possibly all by itself.
 
If Stanley Baldwin's government hadn't been obsessed with privatising public works & competitive tendering, that tunnel would never have been constructed by German engineering firms in the first place, and intentionally constructed too tough to 'blow'.

Indeed, if British builders had gotten the job then it would have collapsed with minimal effort required, if any at all, possibly all by itself.
Which is good for a hypothetical war scenario, but in peace? Luckily the UK is not exactly an earthquake-ridden location.
 
OOC: "The Severn Tunnel is 3.7km and took 13 years, need another 10 times that for the Channel. The Queensway Tunnel was 3.24km between Liverpool and Birkenhead took 9 years from 1925-34, 50 years after the Severn Tunnel so progress is not much faster. If France and UK cooperated its still 50 years of digging." This is interesting since it confirms my suspicion that a channel tunnel this early was possible, if not really a good idea (the modern one is not necessarily a good idea). Some of the time in engineering projects is devoted to design and admin tasks and does not increase with the length of the tunnel. Of course you could also have the invasion done in the 21st century to make this work.
 
Some of the difficulties involved in pre-1940 undersea tunnel building:
https://en.wikipedia.org/wiki/Severn_Tunnel

The Severn Tunnel is 3.7km and took 13 years, need another 10 times that for the Channel. The Queensway Tunnel was 3.24km between Liverpool and Birkenhead took 9 years from 1925-34, 50 years after the Severn Tunnel so progress is not much faster. If France and UK cooperated its still 50 years of digging.
Well longest railway tunnel in Slovakia has 4697.15 m and was done in 4 years (1936-40), Swiss Lotschberg tunnel has 14.612 and was done in app 6 years (1907-1913). ;)
 
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