I'm sure this was either your imagination , or your doorbell ringing …...LoL
Have fun in "flying" the ship and making the blog; when active, I'll most likely will be following it when I have time.
PS: You're not talking about the "Nautilus" in the 2003 movie "The League of Extraordinary Gentlemen", are you ??
@Milton: another "extraordinary" challenge in flightsim modelling ??? …. LoL….