U-31.

This is coolbert:

From STEINER LIED through Harry at Sharkhunters. An update, the German submarine force once again back in action. Or will be soon is the expectation.

"IN THE WATER AGAIN – U-31 [German submarine] which has been out of commission since 2014, is back in the water off Kristiansand and undergoing sea trials . . . U-35 might become operational sometime this summer as well . . .  Once the greatest submarine power in history, Germany now has only six submarines of which none are combat ready and only one is undergoing shakedown trials. U-31 at least is in the water and if all goes well, will be combat ready in a few months. If all goes well with U-35, she too will be combat ready late this year. Two combat ready submarines late this year of a total of six boats is quite a change."

See previous blog entries the topic of which was the operational status of the modern German submarine force:

http://militaryanalysis.blogspot.com/2017/12/u-boote.html

http://militaryanalysis.blogspot.com/2017/10/u-boats.html

coolbert.