Submarine sandwiches have absolutely nothing to do with naval transportation and only got their name because a grocery store owner in 1927 thought his Italian bread rolls vaguely resembled the shape of a submarine.

How a Long Roll Became a “Sub”

The resemblance works at a glance: a submarine is a long, enclosed form, and so is a sandwich made in a single length of bread. Seen from the side, the loaf supplies the silhouette; the filling, tucked inside rather than spread across separate slices, reinforces the sense of one continuous object.

That makes “sub” a visual nickname, not a description of how the sandwich is made or transported. The bread does not need to reproduce a vessel precisely. Its proportions are enough for the comparison to click—and for a short menu word to stand in for the whole sandwich.

A Shape That Carries Its Own Explanation

The name is easy to understand even for someone who has never heard its origin story: look at the roll, and the image is there. In that sense, the sandwich’s shape does more than hold the ingredients together. It makes the nickname self-explanatory, turning a familiar outline into a lasting label.