The Navy continues to be plagued by submarine maintenance delays -- experiencing a "significant growth" in the number of days needed to complete a Virginia-class submarine availability, according to a top service official. “We're really struggling with getting submarines out on time. Over the last 10 years or so, [there’s been] 20 to 30% on-time delivery,” said Vice Adm. William Galinis, head of Naval Sea Systems Command. The Virginia-class nuclear-powered attack submarine program has been a “particularly challenging class” from...