Help as best I can.
John Holland actually founded the Electric Boat Co.
He was Irish and originally designed submarines that could sink major British warships. All a bit political, Irish freedom fighters sponsored him initially. That sort of thing best left where it is, in the past!
His Holland was the first 'conventional' submarine with propulsion under water by an electric motor and batteries and a petrol engine when surfaced and the normal methods (pre-nuclear) of controlling the boat. The overall shape was quite amazing, very similar in style to the first US Navy nuclear submarines.
The Holland was in trials with other craft required by the US Navy. The Holland won 'hands down' and was taken into US service being SS1. As well as the 18" Whitehead torpedo (with a reload) it also mounted a 'dynamite gun' in the bow designed to be fired when the boat was surfaced. Not very accurate but again a novel feature.
Various mainly external changes were made by the US Navy including a wooden deck and much simplified masts to the original types. Some changes to the steering but nothing totally design changing. It remained in US Navy service until around 1920 I think when scrapped!
We 'clever or not so clever British' as in this case regarded submarines at that time as being 'pirate vessels' and not the sort that 'Gentlemen' would use!
Thankfully we 'grew up' sooner than later and built 6 Holland type submarines under licence here in the UK. They were considerably different again externally (an example being the USS Holland had mainly flush rivets, ours the normal 'domed' rivets. Was John Holland even then thinking of reducing drag? I would like to think so.
We did make one massive improvement though, we added a periscope that made underwater navigation easier.
No Holland fired a shot in anger although the British Holland's were ready to leave port and engage the Russian Baltic fleet making its way to the Far East, (the Russo-Japanese War of 1904) after the Russians had sunk English fishing boats at sea mistaking them for Japanese torpedo boats! (The Japanese sank most of them anyway a few months later so honour satisfied and the Russians paid the British reparations.)
A potted history and I hope of use.