The Navy’s budget proposal for fiscal 2015 calls for spending $30.7 billion for ships, aircraft and weapons, about $4 billion less than the 2014 request with the largest reduction hitting aviation, according to Navy officials and documents released as the Pentagon unveiled its funding request on Tuesday. The documents outline spending $14.4 billion on shipbuilding compared to $15.2 in fiscal 2014, $3.2 billion on weapons compared to $3 billion this year, and $13.07 billion on aircraft, a decline of more…