USS N-7 (SS-59) was a N-class coastal defense submarine built for the United States Navy during World War I.

[1] For surface running, the Electric Boat submarines were powered by two 300-brake-horsepower (224 kW) diesel engines, each driving one propeller shaft.

After outfitting at New London, Connecticut, she patrolled the New England coast, to guard against attacks by German U-boats, until 17 September, when she put into New York City for upkeep.

She spent 1921 in reserve at New London, except for short cruises to Boston, Massachusetts, and Newport, Rhode Island.

This article incorporates text from the public domain Dictionary of American Naval Fighting Ships.