Vett, it looks like your computer (or phone, or tablet, or whatever) is pulling the same stunt that mine does: "correcting" what it thinks are spelling mistakes by turning words into gibberish. Unless, of course, there really is a ship named "Duty Sark!"
You're not alone. My I-phone insists on sticking apostrophes into the words I type, making "its" into "it's" (it just tried to do it again) and "well" into "we'll." it seems to believe me if I backspace and type the word correctly again.
I hate electronic gadgets that think they're smarter than I am. The trouble is, at least 95 percent of the time they're right.
Youth, talent, hard work, and enthusiasm are no match for old age and treachery.