My Ass Rode In Navy Equipment ( ) on the USS Tortuga (LSD-46) in 02-03 with BLT 2/2 on the 24th MEU(SOC). Got my Shellback going down to the Seychelles for a libo port. Fun side note; they let me (I had a secondary MOS as a MCWIS) and the Ships SAR swimmers swim accross the equator on the way back north. I don't think there's any special certificate for that but it was a good time.