“Wow, I know some Unlimited masters that NMC needs to review their seatime on drillships then. Or are the idiots at NMC thinking there’s something conventional about them just because it says “ship?”” Do you care to elaborate on that? I’ve worked on both drilling and blue water cargo. As mate there isn’t much you don’t do on a drillship other than frequent mooring and pierside shiphandling.
My original question though was what defines a conventional vessel for the purpose of these QA letters and is that restriction standard? Is a training ship a conventional vessel? A ferry? A Navy or MSC ship? A pipeline or cable layer?
Capt_Phoenix above didn’t quote the whole thing… “(2) Service on MODUs maintaining station by means of dynamic positioning, may be credited as service on conventional vessels for any raise in grade; however, time more than 8 hours each day will not be credited.”