Conn, Sonar! New surface target bearing two five five!!!

[1958 F.W.D.]

For the first time since WWII, the United States Navy silent service has sunk an enemy vessel by torpedo attack. The IRIS DENA, an Iranian missile frigate, is now at the bottom of the Indian Ocean, off Sri Lanka; courtesy of an MK-48 torpedo fired by an unnamed US Attack Boat. 

 

There are two types of ships- submarines and targets. 

Myself, Dad and "Large" on board the USS Nautilus SSN-571 about 12 or 14 years ago. 

[67RModel]

My first job out of college was working at the Bettis Atomic Power Laboratory. We were testing the newly developed reactor coolant water pumps for the then under development Columbia class submarines. Not sure if they have been debuted yet or not but it was like a 15-20 year project. The Columbia class is slated to replace the Ohio class ballistic missile sub....the ones that stay submerged for months on end and carry the doomsday nukes. The amount of engineering and painstaking effort that is poured into every component of those submarines is incredible. 

[1958 F.W.D.]

43 minutes ago, 67RModel said:

The amount of engineering and painstaking effort that is poured into every component of those submarines is incredible. 

Silent Service. You don't know they are there until it is all over.