Okay, we're pretty certain that the chanty as we know it didn't exist aboard ships prior to 1830 (allowing for one or two very rare exceptions). Even then it took some time to evolve from its origins in the gulf ports and spread into the Atlantic trade and then into the Pacific (We have very little evidence if any that in the early days they were known elsewhere although by the 1850s they were being used on merchant ships around the world more usually on the longer distance runs such as to Australia. The North Sea trade and the Baltic have very little evidence of chanty usage, although north European seamen were always familiar with it, largely those who made up crews on the longer runs. By 1830, well after the Napoleonic Wars, the RN systems for work aboard were very well established and as others have stated there was no need at all for chanties. However on the smaller coastal vessels like the revenue cutters where many of the crews were ex merchantmen it is hard to imagine them not occasionally utilising this resource.