Look, let's be clear about this. Shanties were work songs sung by sailors, ie. to make the work easier. While a shantyman was not specified as a particular crew position, the shantyman was allowed to stand aside and chant the song while others did the hard work. Such songs are akin to other work songs, such as field hollers,troop chants or chain gang songs. Forebitters were songs sung on board ships which were not an aid to working. Shanties fall into simple categories, such as capstan shanties or halyard (stamp-and-go) shanties, according to the work they were used for. Some Shanties could be used for more than one purpose, so the tempo determined the purpose for which they were used. The way that people sing most of the shanties sung today is insufficiently contiguous for work purposes, where the workers sing when they are not putting effort into work. Me, I knew Stan Hugill, and I like to sing Lining Track when someone wants a work song.