I have it on good authority (speaking to a seagull on the Dover - Calais ferry who had just flown in from 'Ull) that jOhn is compiling a book of food related folk songs, in particular those relating to food eating shanties and other sea songs. This is why the spelling in the heading is actually correct, as specially constructed vessels would go out to serve comestibles to the fleet. The sandwidge ship was the culmination of these, barbecue ships having proved less than reliable, and were crewed entirely by old women. One curry ship was built but later scuppered when the bottom fell out of the market.

To me way hay
and a Roll to go!