Non-enyclopedic? 

"On February 24, 1943, Iowa put to sea for shakedown in the Chesapeake Bay and along the Atlantic coast. She got underway on August 27 for Argentia, Newfoundland to neutralise the threat of German battleship Tirpitz which was reportedly operating in Norwegian waters."

The terms/word "put to sea", "shakedown", "underway", as well as calling it "she" seems non-encyclopedic to me, and is more colloquial than should be. Something should be donw about this. Also, I'm changing "neutralise" to the correct spelling of "neutralize", with a "z".