Complex sentence: Following shakedown in Chesapeake Bay from 25 to 28 March 1945, the attack cargo ship operated along the east coast until 8 April when she departed Norfolk for the Canal Zone.
Split into simpler sentences: Following shakedown in Chesapeake Bay from 25 to 28 March 1945, the attack cargo ship operated along the east coast. On 8 April she departed Norfolk for the Canal Zone.