Some photos of the SSN HMS Astute on sea trials. Is the first new submarine for delivery to Royal Navy after the SSBN HMS Vengeance in 1999

http://www.meretmarine.com/article.cfm?id=111628

http://www.meretmarine.com/article.cfm?id=111686

(in French)

Good news for UK, definitly two more Astute class SSN to be build and possibly a seventh boat, in part to guarantee the permanent building of submarines and the transition to the future class of british SSBN (from Mer et Marine, in French):

http://www.meretmarine.com/article.cfm?id=112792

The same information in the Wiki, I see:

http://en.wikipedia.org/wiki/Astute_class_submarine#Boats

Sealeak or obvious errour ?

In

http://www.bbc.co.uk/news/uk-11173266

is stated:

The submarine can carry a mix of up to 38 Spearfish heavyweight torpedoes and Tomahawk Land Attack Cruise missiles, able to target enemy submarines, surface ships and land targets, while its sonar system has a range of 3,000 nautical miles.

3.000 nm ?

Or perhaps 300 nm and the sonar is ten Convergence Zones capable ?

But from some time ago I think the real ranges of some sonar systems (Western types) are of a very long range from the 1960s. I think the capability was here, the problem was processing the confusing signals finded in a very long range.

Some opinions about it ?

But from some time ago I think the real ranges of some sonar systems (Western types) are of a very long range from the 1960s. I think the capability was here, the problem was processing the confusing signals finded in a very long range.

Some opinions about it ?

 

Well, when an "Alfa" first powered up off Kola, it was picked up in Bermuda, so it's possible.

Deep sound channel acoustic propagation.

Deep sound channel acoustic propagation.

 

 

... and / or absolutely perfect, everything goes better than great, sound conditions ...