[3] H-1 ran aground and was wrecked off the coast of Mexico on 12 March 1920,[4] while the remaining eight submarines were decommissioned in late 1922, and laid up in the Reserve Fleet.

USN tactical employment of these submarines in this era did not require "crash dives", so the considerable time it took to dismantle and store below the temporary bridge structure was not considered a liability.

Starting in 1918-1919 with lessons learned from overseas experience, U.S. submarines had bridges more suited to surfaced operations in rough weather.

[7] The EB26A design originally built for the USN (H-1 to H-3) had a watertight bulkhead separating the torpedo room from the forward battery compartment.

[9] Since the acquisition of the H-4 to H-9 group was delayed, other types had already been acquired by the USN so these last six boats were assigned hull numbers that fell into the middle of the S-class (147-152)[10] This article incorporates text from the public domain Dictionary of American Naval Fighting Ships.