The reason I said I'm not an expert is because I have only spent one night on trafalgar as part of officer training at dartmouth. I have however spent 2 years as a pinger (and I don't mind admitting my past before jets as many FAA FJ guys came from rotary) and made it my business to know as much as I could about them. Considering I was also the sqn cbo and crypto custodian I had up to TS knowledge. Coupled with my time in OR(sea) I think I have my finger on the pulse better than some. 13 years in a blue suit UJ may not be much but the jobs I have done during that time more than qualify me to comment. Please do elaborate on your superior knowledge as an FDO? Either that or take my comments on the chin as nothing I have said is incorrect.
Oh and a wafu can call a ship or sub whatever he or she likes especially when it winds up the fisheads as you have shown!