Complex sentence: It is unlikely that these conditions will impede the current plan to turn "Wisconsin" into a permanent museum ship at her berth in Norfolk however, should the need arise, the "Wisconsin" shall be ready for service in the Navy once again.
Split into simpler sentences: It is unlikely that these conditions will impede the current plan to turn the "Wisconsin" into a permanent museum ship at her berth in Norfolk. However, should the need arise, the USS "Wisconsin" should be ready for service in the Navy once again.