Shellback, I was also in the Navy I served during the late 80's early 90's. I watched a training tape of the that fire you guys had. I'm glad you survived. I did not get to become a shellback, the captain was afraid to cross the equator(he wasn't a shellback either) we were as close as 50miles and he would not cross over. I'm not real sure about the answer to your question I am sure someone on here knows. Good fishing and tightlines. Bob G.