The Imperial Naval Ship Testudo, of the First Viridian Fleet of the Imperial Space Navy, operates as an Escort Ship. The navy has nicknamed it a "Shield Ship" due to the large blast shield. It operates as an intra-system escort or as a damage reciever in combat.
In the way of defense, the Testudo features three Point Defense Turrets on the top hull right under the bridge.
The Testudo also has a Small Gauss Cannon tucked away inside.
And like any space faring vessel the escort ship has a nice array of communication antennae.
Undoubtedly, one of best features of the Testudo is the rotating engine, which is invaluable when placed at 90 degrees. With this engine placement the escort ship can face it's enormous blast shield directly at enemy fire.
And finally, the reason it's a "Shield Ship", the Testudo's large blast shield. As you can see the bridge extends over the shield, to allow for a view into oncoming fire.
Now this one stands out. Not only because of the cool design you've cooked up, but the unique idea. Not a lot of people would think of building a ship that would purposely take enemy fire. Good job. The communications array is a nice addition to the side of the ship, as well as the cannon tucked into the ship.