Observer: "No the Royal Navy did not use or sing SHANTYS to work their ships"

Meanwhile back in 1867: "...The men march round to the tune of a fiddle or fife..."

"Songs are also used to aid the men in keeping time when pulling on a rope, where a fife is not available."

Royal Navy sailors marching and hauling to shanties... no! Fife, fiddle and a capella songs and tunes... yes!

And the "official" difference according to Hoyle and Hugill is...?